Best Power Bank for Tailgating of 2026 Top Picks

The Liahomco 70,000mAh Power Bank is an ultra-high-capacity portable battery pack engineered primarily for extended off-grid use, multi-day camping trips, road travel, and household emergency backup. Designed for users who need prolonged electrical independence away from wall outlets, this heavy-duty external charger acts as a centralized mobile power hub for smartphones, tablets, and personal electronics. While typical pocket chargers prioritize minimal weight for daily commutes, this unit prioritizes maximum stored energy, making it an excellent match for campers, outdoor festival attendees, families on road trips, and emergency-kit planners.

In terms of charging performance, the battery pack delivers up to 30W fast charging and supports both Power Delivery (PD) and Quick Charge 3.0 protocols. Connectivity includes five total outputs: two 30W USB-A ports, two 15W USB-A ports, and a bidirectional USB-C port offering up to 20W output. The manufacturer notes that compatible smartphones can reach up to a 60 percent charge in roughly 30 minutes under optimal fast-charging conditions. Compatibility extends to a broad range of 5V USB mobile gear, including iPhones, Android devices, tablets, handheld gaming consoles, camping fans, and Bluetooth audio accessories. However, the manufacturer explicitly notes that this power bank is not compatible with laptops, so shoppers seeking notebook power delivery must look elsewhere.

The physical design balances its substantial battery volume with practical handling features, measuring 2.56 x 2.56 x 5.91 inches and weighing approximately 1.85 pounds (30 ounces). The exterior housing features a built-in digital LCD screen that provides real-time tracking of remaining battery percentage, eliminating the ambiguity of standard four-dot LED lights. A firm, integrated lanyard is built directly into the chassis, allowing users to secure the unit to backpack straps, hang it from tent hooks at a campsite, or loop it securely around a wrist to prevent accidental drops. Internal safety circuitry includes built-in protection against overcharging, over-discharging, overheating, overcurrent, and short-circuit events.

Recharging a 70,000mAh battery pack requires patience and an appropriate power source, utilizing either the 18W USB-C input or the secondary Micro-USB input. Connecting devices is straightforward, with the system intelligently adapting output to match the power requirements of connected electronics across its five ports. Because the unit offers dual high-speed 30W ports alongside standard 15W ports, users can prioritize fast charging for depleted phones while simultaneously trickling power into lower-draw accessories like wireless earbuds or fitness trackers. The compact vertical brick profile sits stably on camping tables or nightstands, keeping multi-cable setups organized in shared spaces.

The most significant limitation of this power bank centers on travel regulations: due to its massive 70,000mAh capacity, it is strictly not allowed on commercial passenger aircraft under standard airline battery restrictions. Furthermore, at nearly two pounds, the unit is noticeably heavy and bulky compared to standard 10,000mAh or 20,000mAh everyday-carry chargers, making it impractical for pocket storage. Buyers must also consider that total available charging wattage is distributed across ports during multi-device use, and the lack of laptop support means it cannot serve as an all-in-one workstation charger.

For campers, road trippers, and homeowners preparing for storm-induced power outages, the Liahomco 70,000mAh Power Bank offers an exceptionally cost-effective way to keep essential mobile electronics running for days on end. However, frequent airline passengers and remote workers requiring laptop charging will need to choose a smaller, flight-compliant, high-wattage alternative. If your primary goal is maximizing stored backup energy for off-grid recreation or domestic emergency preparedness, this five-port powerhouse represents a very capable and practical investment.

The Liahomco power bank is equipped with a versatile array of seven total ports, dividing into five output ports and two input ports for flexible device management. The output configuration includes two 30W USB-A ports for Quick Charge 3.0 compatible devices, two standard 15W USB-A ports for secondary electronics, and one 20W USB-C port supporting Power Delivery. For replenishing the power bank itself, users can utilize the 18W fast-charging USB-C input or the secondary Micro-USB port, providing backup convenience if a specific charging cable is unavailable.

While the Liahomco 70,000mAh power bank is a standout companion for outdoor camping and overland vehicle travel, it is fundamentally unsuitable for air travel. Airline regulations prohibit lithium battery packs of this capacity on passenger planes, meaning this unit must remain strictly on the ground. For ground-based adventures, however, the integrated lanyard allows easy suspension inside tents or on pack exteriors, and the massive capacity ensures family devices, rechargeable lanterns, and emergency radios stay powered during extended stays away from electrical infrastructure.

The YELOMIN Solar Charger Power Bank 38800mAh is a rugged, heavy-duty external battery pack built primarily for outdoor enthusiasts, hikers, campers, and household emergency kits. Featuring an expansive 38,800mAh nominal battery capacity, an integrated solar panel, and four tethered charging cables, this charger is engineered to keep essential electronics running when traditional wall power is unavailable. It eliminates the friction of packing multiple charging cords, making it a reliable backup choice for families, road trippers, and outdoor workers.

Charging capability is centered around a fast 22.5W USB-C port alongside a standard USB-A output and four built-in cables. The manufacturer states that the power bank can charge up to six devices simultaneously, accommodating a wide mix of modern smartphones, tablets, and personal accessories. The internal lithium-polymer cells are regulated by an aviation-grade management chip equipped with multi-point safety protections against overcharging, overcurrent, short circuits, and overheating. While the unit delivers 22.5W maximum fast charging to supported single devices, connecting multiple devices simultaneously divides the available power across active connections.

Built to handle demanding outdoor environments, the power bank measures 6.3 x 3.07 x 1.38 inches and features high-visibility orange accents. Its IP65-rated enclosure provides proven resistance against water splashes, rain, dust intrusion, and accidental trail impacts. On the rear, dual LED flashlights provide reliable utility illumination with three distinct light settings: steady beam for campsite navigation, strobe for quick attention, and SOS pattern for emergency signaling. The package also includes a durable lanyard that attaches easily to backpack loops or tent hooks.

Routine operation and power management are simple, offering dual recharging methods for off-grid flexibility. For regular everyday use, the manufacturer recommends recharging the power bank through a wall adapter via the bidirectional USB-C port for faster turnaround times. The onboard solar panel acts as a secondary emergency charging method off the grid. Because solar harvesting is strictly limited by the compact surface area and direct sunlight intensity, solar replenishment operates at lower current and requires extended exposure, making it best reserved for emergency backup rather than primary replenishment.

A realistic evaluation of this charger highlights clear functional tradeoffs between capacity and physical footprint. Packing 38,800mAh of energy into an IP65 protective shell makes the device noticeably thicker and heavier than standard slim power banks, making it less practical for light pocket carry. Additionally, travelers intending to fly should verify current carrier regulations regarding high-capacity lithium batteries, as large power packs often require specific airline carry-on clearance.

This rugged charger is an exceptional match for outdoor adventurers, overland travelers, and preparedness-minded homeowners seeking dependable multi-day power without loose cable hassles. Users seeking an ultralight commuter pack for daily office errands will likely find its bulk excessive, but anyone prioritizing rugged durability, built-in cables, and immense reserve power will appreciate the reliable utility of this versatile outdoor charger.

The YELOMIN 38800mAh power bank provides versatile connectivity designed to simplify multi-device mobile setups. With four integrated cables permanently attached to the housing, users can charge compatible phones, tablets, and handheld devices without carrying standalone cords in their bags or vehicles.

In addition to the built-in cables, the unit includes a standard USB-A output port and a high-speed bidirectional USB-C port supporting up to 22.5W fast charging. This configuration allows simultaneous connection for up to six devices, making it practical for shared family use during road trips, camping weekends, or power outages.

Connecting multiple devices distributes the charger's available wattage across all active ports. For maximum charging speed on compatible fast-charging smartphones, using the dedicated single USB-C connection is recommended.

Designed with off-grid survival and emergency preparedness in mind, this charger integrates practical lighting and backup energy capabilities into a rugged form factor. The integrated monocrystalline solar panel passively captures ambient sunlight to supply trickle backup power when standard outlets are out of reach.

Solar charging efficiency is directly dependent on direct sunlight exposure, geographic angle, and weather conditions. As the manufacturer notes, the compact panel is engineered as an emergency reserve method rather than a primary daily charging option, with wall-outlet recharging remaining the standard method for full replenishment.

The dual built-in LED flashlights offer significant utility during nighttime tasks, tent setup, or road emergencies. Users can toggle through three functional modes: Steady illumination for general visibility, Strobe for signaling, and an automated SOS mode designed to attract attention during critical situations.

The Jackery Explorer 300 is a lightweight portable power station designed to provide practical off-grid electricity for campers, outdoor photographers, road trippers, and homeowners preparing for power interruptions. Built around a 292Wh internal battery and an easy-carry handle, this unit serves as a bridge between pocket-sized USB battery packs and heavy home-backup generators. It best suits mobile professionals and outdoor recreationists who want to run mobile electronics, camera equipment, or CPAP gear without adding heavy bulk to their travel gear.

Charging capabilities center on a versatile six-port layout that can supply power to multiple devices at once. Output options include two AC outlets delivering a combined 300W continuous output with a 600W surge peak, one 100W USB-C Power Delivery port, two USB-A ports, and a standard 120W car port. The 100W USB-C port is particularly useful for laptop users and modern smartphone owners, delivering direct high-speed power without the need to plug an extra AC charging adapter into the station.

Durability is anchored by long-lasting LiFePO4 (lithium iron phosphate) battery cells. The manufacturer specifies that this chemistry delivers over 4,000 charge cycles before dipping to 70% capacity, offering substantially longer service life than older traditional lithium-ion packs. The unit weighs between 7.1 and 7.5 pounds and measures 9.1 inches long, 5.2 inches wide, and 7.8 inches high, making it compact enough to store easily on a vehicle floorboard, in a tent corner, or on a work table.

Recharging the 292Wh power station is straightforward whether at home or on the road. Jackery includes an AC wall adapter for standard household charging and a 12V car charging cable for topping up the station during transit. For off-grid use, the system pairs with Jackery solar panels; the manufacturer notes that an optional 100W solar panel can restore the station to 80% capacity in approximately 2.8 hours, while a 40W panel can reach 80% in roughly 7.5 hours depending on sun exposure.

While this power station delivers broad functionality for small electronics, buyers should understand its output limits before purchasing. The 300W continuous AC inverter limit means it cannot power high-draw appliances such as coffee makers, electric skillets, or space heaters. Furthermore, because it features a 292Wh capacity, this unit cannot be carried onto commercial passenger aircraft under standard 100Wh to 160Wh airline rules, so it is strictly intended for road trips, car camping, and ground-based travel.

For campers, van lifers, remote workers, and emergency kit shoppers looking for a durable, easily transportable power hub, the Jackery Explorer 300 is an excellent choice. Its inclusion of an efficient LiFePO4 battery pack, a 100W USB-C PD connection, and dual AC sockets creates a balanced off-grid solution. Users requiring whole-house emergency coverage or high-draw kitchen appliance support should look to higher-capacity systems, but mobile users will find the Explorer 300 an ideal everyday portable generator.

The Explorer 300 offers six simultaneous charging ports to handle both AC-powered hardware and modern mobile devices. The two AC outlets deliver 300W of rated continuous power and can manage short peak surges up to 600W, providing plenty of headroom for CPAP machines, camera battery chargers, and small field tools.

For modern USB devices, the power station features an advanced 100W USB-C Power Delivery port that can power compatible laptops, tablets, and phones at top speeds without requiring a wall block. Two standard USB-A ports accommodate legacy cables, while the built-in 120W 12V car port supplies power to car fridges, portable inflators, and 12V accessories.

Featuring upgraded LiFePO4 battery chemistry, the Explorer 300 delivers a capacity of 292Wh and maintains more than 4,000 cycles to 70% capacity. This represents a significant lifespan advantage over standard lithium-ion batteries, translating to over a decade of regular use under typical camping or emergency conditions.

Recharging options are versatile, with both an AC household adapter and a 12V car charger cable included in the box. Users who prefer renewable off-grid power can connect optional Jackery solar panels, reaching an 80% charge in about 2.8 hours using a 100W panel or approximately 7.5 hours using a compact 40W panel under ideal sunlight conditions.

The Daran 89.6Wh Portable Power Station is a compact, multi-output mobile power bank engineered for users who need more versatility than a standard pocket charger can deliver. Built with durable LiFePO4 battery cells and dual AC sockets, this 2.54-pound generator alternative bridges the gap between pocket battery packs and bulky home backup stations. It serves remote workers running laptops away from wall sockets, campers wanting quiet off-grid charging, photographers managing camera gear, and families building portable emergency kits.

Charging capability centers around an 89.6Wh capacity pack paired with seven distinct output connections. Users get two standard AC wall sockets capable of delivering 100W continuous output with a 200W surge peak, suitable for running compatible laptops, small electronics, or compact equipment. For mobile electronics, the unit includes two USB-C ports offering up to 45W and 15W respectively, alongside two USB-A ports delivering up to 18W and 15W for smartphones, tablets, or earbuds. A dedicated 60W DC5521 port adds auxiliary 12V connectivity, while the manufacturer notes compatibility with devices such as drones, cameras, and mini-coolers within the 100W threshold.

Measuring 6.5 by 3.3 by 4 inches, the enclosure adopts a dark gray finish designed with a practical soft carry handle for convenient transit in backpacks or vehicle trunks. A clear LED status display indicates real-time operational status and remaining battery level, guarded by a protective peel-away shipping film. Operation is completely silent thanks to a fanless thermal structure, making it unobtrusive when placed beside a sleeping bag or on a quiet desk. For blackout preparedness and outdoor nights, an integrated four-level LED flashlight offers both continuous illumination and SOS signaling modes, secured by a long-press accidental-touch activation mechanism.

Replenishing the internal battery is straightforward, with the manufacturer providing four distinct recharge pathways. Owners can charge via a standard AC wall socket, bidirectional USB-C PD, a 12V vehicle port, or an external solar panel. Fast-charging technology allows the battery to reach an 80 percent charge in approximately 1.5 hours, and the system even supports simultaneous AC and DC input charging to maximize turnaround speed. An internal battery management system (BMS) incorporates 12 safety safeguards that monitor voltage, current, and internal temperatures during both discharge and recharge cycles.

Realistic operational limits revolve primarily around power output and physical footprint. The AC sockets are strictly capped at 100W total output, meaning this unit cannot run high-draw household appliances such as coffee makers, blenders, hair dryers, or space heaters. In addition, while 2.54 pounds is relatively lightweight for an AC-equipped power station, it remains significantly heavier and bulkier than standard 10,000mAh smartphone chargers. Buyers planning to recharge with solar energy should also note that the solar panel and connection cables must be purchased separately.

The Daran 89.6Wh Power Station is a sensible choice for road trippers, students, and mobile professionals seeking an all-in-one power hub with genuine AC utility and USB-C fast charging. The standout reason to choose this model over conventional lithium-ion battery packs is its LiFePO4 battery chemistry, which delivers a rated lifespan exceeding 3,500 cycles for sustained reliability. Those requiring sustained output above 100W for demanding appliances will need a larger power station, but users needing dependable power for laptops, phones, and travel essentials will find great utility in this compact design.

The Daran power station features seven total output ports to support multiple devices at once. The two standard three-prong AC outlets share up to 100W of continuous output (200W peak), making them suitable for compatible laptops, small drones, and low-draw desktop gear.

Mobile charging is anchored by two USB-C ports and two USB-A ports. The primary USB-C connection delivers up to 45W Power Delivery for rapidly charging modern USB-C laptops, tablets, and flagship smartphones, while the secondary USB-C port provides 15W. The USB-A ports output up to 18W and 15W respectively, allowing legacy charging cables to operate alongside modern Type-C connections.

A 60W DC5521 round barrel port provides direct 12V output for compatible auxiliary equipment. Because the unit offers such varied port options, users can charge an array of gear including cameras, smartphones, and low-power travel devices without carrying separate wall adapters.

At the core of this power bank is an 89.6Wh lithium iron phosphate (LiFePO4) battery pack. Unlike conventional NCM lithium-ion cells that typically degrade after 500 to 1,000 charge cycles, this LiFePO4 chemistry is rated for over 3,500 life cycles, offering substantial long-term durability across years of routine use.

Safety is managed through an advanced integrated Battery Management System (BMS) that actively tracks 12 protective metrics. This system oversees cell voltage, current output, and thermal conditions to safeguard against common electrical issues such as overcharging, overcurrent, and short circuits.

For optimal battery calibration and gauge accuracy, the manufacturer recommends fully discharging and recharging the battery pack twice upon initial unboxing. The listed 89.6Wh capacity also provides a helpful baseline for comparing the unit against airline carry-on regulations, though travelers should always verify specific carrier battery policies before flying.

The Sucrosey 50000mAh Portable Charger is an all-in-one power bank engineered to deliver extended backup power for mobile users who want to ditch external cords and charging bricks. Designed with a built-in foldable AC wall plug alongside integrated USB-C and iOS charging cables, this battery pack eliminates the clutter of travel accessories. It is aimed primarily at campers, road trippers, outdoor workers, college students, and emergency-prep planners who need dependable multi-day charging away from wall outlets.

Charging capabilities center on 22.5W fast charging supported through USB Power Delivery and Quick Charge protocols. According to manufacturer specifications, the external USB-C port, the integrated USB-C cable, and the USB-A port each support up to 22.5W output, allowing an iPhone 15 to reach roughly 50 percent battery in about 30 minutes. While the manufacturer claims compatibility with higher-draw devices such as an iPad Pro and MacBook Air, users should recognize that 22.5W delivers basic or maintenance charging for laptops rather than the full-speed charging offered by 65W USB-C PD supplies.

The physical layout prioritizes self-contained utility by housing both the charging prongs and device cables directly inside the shell. Measuring approximately 4.6 by 2.8 by 1.2 inches and weighing under a pound, the black rectangular chassis remains manageable inside backpacks, center consoles, or tool bags. The foldable two-prong AC plug retracts flush when not in use, protecting adjacent items in your bag from scratches, while the attached cables tuck securely into dedicated channels on the unit.

Recharging the power bank is straightforward thanks to dual-method flexibility, allowing direct connection to any standard 100-240V wall socket or an external power source. The manufacturer notes that plugging directly into a wall outlet can replenish the internal cells in approximately 6 hours. Furthermore, pass-through charging is supported, meaning you can plug the power bank into a hotel or bedside outlet at night to simultaneously replenish the internal battery and charge a connected smartphone.

A primary consideration is the relationship between the nominal 50,000 mAh rating and travel regulations. While a high nominal capacity sounds ideal for long road trips, a battery of this scale technically equates to roughly 185Wh, which exceeds standard commercial airline carry-on limits of 100Wh without special airline carrier approval. Additionally, simultaneous multi-device charging will split available power output, and nominal battery capacity differs from actual delivered energy due to natural voltage conversion losses during operation.

The Sucrosey 50000mAh Portable Charger is best suited for budget-conscious drivers, campers, students, and emergency-kit builders who value built-in cables and direct wall-plug recharging above all else. Users seeking certified carry-on power banks for commercial flights or dedicated high-wattage 65W to 100W laptop chargers should look at airline-compliant alternatives. For grounded multi-device convenience and off-grid mobile endurance, this integrated package delivers significant practical utility.

The Sucrosey power bank utilizes 22.5W fast-charging technology across multiple connection points, supporting both USB Power Delivery (PD) and Quick Charge (QC) standards. The manufacturer specifies that the built-in USB-C cable, external USB-C port, and USB-A port each reach up to 22.5W maximum output when used individually. This wattage allows compatible smartphones like the iPhone 15 series or modern Android phones to recharge noticeably faster than with standard 5W or 10W baseline adapters.

When powering larger electronics such as an iPad Pro or MacBook Air, the 22.5W threshold will provide steady auxiliary power or slow charging during light usage. However, high-performance laptop workflows will draw power faster than 22.5W can replace it. Connecting multiple devices at the same time will distribute the internal power supply, reducing single-port output to protect connected electronics from overcurrent conditions.

Portability is defined by the unit's all-in-one form factor, which measures 4.6 by 2.8 by 1.2 inches. By integrating a foldable AC wall plug, a USB-C cable, and an iOS cable directly into the body, the charger eliminates the bulk of carrying secondary wall bricks and tangled wires during road trips, daily commutes, or college campus sessions.

For air travel, passengers should exercise caution before packing this charger. Standard airline and FAA regulations typically restrict lithium-ion batteries over 100 watt-hours (Wh) in carry-on baggage without prior airline approval, and prohibit them entirely in checked luggage. Because a 50,000 mAh capacity at 3.7V equates to approximately 185Wh, this battery pack is better suited for ground transportation, road travel, and camping rather than commercial flights.

The Feidyns 80000mAh Power Bank is an ultra-high-capacity rugged portable charging station engineered specifically for prolonged off-grid power, outdoor camping, and disaster preparedness. Instead of targeting commuters looking for a pocket-sized battery pack, this unit functions as a centralized power hub capable of keeping essential electronics running for days at a time. It best suits campers, outdoor enthusiasts, road trippers, and emergency-preparedness planners who require multi-day reliability and multi-device support far from traditional electrical outlets.

Charging performance is anchored by a 35W USB-C Power Delivery port alongside Quick Charge 3.0 compatibility, which the manufacturer states can charge an iPhone to 50% in roughly 18 minutes. The battery pack also integrates a 15W wireless charging pad directly on its top housing, alongside seven output ports to recharge as many as eight devices simultaneously. The internal circuitry automatically manages power delivery across connected devices, adapting down to 7.5W for low-power gear like AirPods or up to 35W for compatible handheld devices such as gaming consoles and VR headsets. Shoppers should keep in mind that the 80,000 mAh rating reflects nominal internal battery capacity, and natural voltage conversion will affect the total delivered energy reaching connected gear.

Physical durability and outdoor readiness are prominent strengths of the exterior design. The enclosure features an IP66 water and dust protection rating, helping it withstand rainstorms, splashes, and campsite dirt. A high-output 300-lumen LED flashlight is built directly into the housing, offering both standard illumination and an SOS emergency strobe mode for night-time trail safety or unexpected power outages. The unit also includes an integrated military-grade carrying strap rated to withstand up to 200 pounds of pulling force, making it easy to lash to outdoor gear or carry around a campsite.

Operating and monitoring the power bank is straightforward thanks to its dedicated indicator array. Four blue LEDs track battery reserves in 25%, 50%, 75%, and 100% stages, while dedicated top status lights flash red during active wireless charging and green when the solar panel is capturing sunlight. For initial setup, the manufacturer instructs users to fully charge the unit to 100% and completely drain it to 0% three consecutive times to calibrate the cells. Routine recharging should be done via a high-wattage wall charger or car outlet, as the 5W built-in solar panel is designed exclusively as an emergency power trickle when no other electrical source exists.

The primary tradeoff of this high-capacity unit centers on portability and travel compliance. Because of its massive 80,000 mAh capacity and 2.25-pound weight, this power bank is explicitly not approved for commercial airline flights under standard FAA and international aviation battery rules. Furthermore, while the solar panel provides peace of mind in survival scenarios, charging an 80,000 mAh battery solely via sunlight takes an extensive amount of time. Its footprint makes it ideal for vehicle storage, camping bins, or storm kits rather than everyday backpack commuting.

The Feidyns 80000mAh Power Bank represents a compelling choice for outdoor adventurers, overland campers, and families building a resilient emergency kit. Users needing a lightweight battery for daily pocket carry or air travel should look to a standard sub-100Wh portable charger instead. For buyers whose top priority is dependable multi-day energy storage, simultaneous multi-device capability, and rugged weather protection in remote settings, this heavy-duty power bank offers outstanding utility.

The integrated solar panel on the Feidyns power bank provides a rated 5W emergency input designed to capture ambient sunlight when grid power is completely unavailable. The manufacturer explicitly emphasizes that solar input should be treated as an emergency backup method rather than a primary everyday recharge solution. Given the massive 80,000 mAh internal capacity, complete solar replenishment requires prolonged sun exposure, making wired wall or vehicle charging the recommended primary recharge method prior to heading outdoors.

Beyond auxiliary solar collection, the charger incorporates critical survival tools including a 300-lumen emergency LED light. This lighting system features an SOS strobe mode to assist with nighttime visibility, outdoor roadside breakdowns, and emergency signaling. For long-term emergency kit storage, the manufacturer recommends keeping the battery pack stored at approximately 50% charge to maximize cell preservation and long-term shelf life.

A critical consideration for prospective buyers is that the Feidyns 80000mAh Power Bank is not approved for commercial airline travel. Standard FAA and international aviation safety regulations restrict spare lithium-ion batteries over 100Wh to 160Wh without explicit airline pre-approval, and batteries exceeding 160Wh are strictly prohibited from passenger aircraft cabins and checked baggage alike. With an 80,000 mAh nominal capacity, this unit substantially exceeds allowable passenger flight limits.

Consequently, this battery pack is best suited for ground transportation, overland travel, RV trips, boating, car camping, and residential emergency backup. Road trippers and campers can readily transport the 2.25-pound device in a vehicle or backpack, but flyers must select a smaller, flight-compliant power bank rated at or below 100Wh for carry-on luggage.