If you’re looking for the 14 best airline-approved battery packs for medical devices in 2025, I’ve got you covered. I’ve found compact, lightweight options that are FAA and TSA approved and support devices like CPAPs, laptops, and small appliances. These batteries are designed for travel, with quick recharging and reliable power, making sure you stay connected and comfortable on the go. Keep going to discover the top choices and what makes them ideal for your needs.
Key Takeaways
- Select FAA and TSA-approved battery packs with capacities up to 100Wh for seamless airline travel with medical devices.
- Prioritize lightweight, compact designs with multiple output ports for charging CPAPs, laptops, and other essential devices.
- Check for quick recharging features and pass-through charging to ensure reliable power during travel.
- Verify proper labeling and documentation to facilitate airport security and airline approval processes.
- Consider batteries supporting extended runtime, multiple device charging, and safety features like over-charge and short-circuit protection.
Freedom CPAP Battery Backup Power Supply
If you’re frequently on the go and need a reliable power backup for your CPAP machine, the Freedom CPAP Battery Backup Power Supply is a top choice. It’s lightweight at just 3.7 pounds and compact, making it easy to pack for travel, camping, or emergencies. The 160 Watt Hour lithium-ion battery provides portable, rechargeable power compatible with popular models like ResMed AirSense, Philips DreamStation, and Transcend Micro. Runtime varies based on your device’s settings, but it can extend with heating functions off. It includes an LED indicator to monitor power levels and comes with an AC charger. Perfect for ensuring your sleep apnea therapy continues uninterrupted wherever you are.
Best For: travelers, campers, and individuals who experience frequent power outages and need a reliable, portable backup power source for their CPAP machines.
Pros:
- Lightweight and compact design (only 3.7 pounds, 7.9 x 5.1 x 1.0 inches) for easy portability
- Compatible with popular CPAP models like ResMed AirSense, Philips DreamStation, and Transcend Micro
- Rechargeable lithium-ion battery with LED power level indicator for convenient monitoring
Cons:
- Runtime varies depending on device settings and additional features like humidifiers, which may require extra power
- Some models need a separate 14V output cable (sold separately) for full compatibility
- Limited capacity of 160 Watt Hours may not support extended use without recharging
EASYLONGER CPAP Battery Backup Power Supply (ES960)
The EASYLONGER CPAP Battery Backup Power Supply (ES960) stands out as an ideal choice for travelers and outdoor enthusiasts who need reliable, airline-approved backup power for their CPAP devices. With a high capacity of 297.6Wh, it can power devices like AirSense 11, DreamStation, and more, providing over two nights of use when the humidifier and heated tube are off. It features 7 ports and wireless charging for other devices, making it versatile for outdoor adventures or emergencies. Built with LiFePO4 cells, it’s safe, durable, and capable of around 3000 cycles. Recharging options include Type-C, AC, or solar, ensuring continuous power wherever you go.
Best For: travelers, outdoor enthusiasts, and those needing a reliable, airline-approved backup power source for CPAP devices during camping, power outages, or extended trips.
Pros:
- High capacity of 297.6Wh provides over two nights of CPAP use without humidifier and heated tube
- Versatile with 7 ports and wireless charging to power multiple devices simultaneously
- Built with LiFePO4 cells offering safety, durability, and approximately 3000 battery cycles
Cons:
- Requires separate purchase of a DC cable for certain devices like Sefam S Box and Resvent iBreeze
- Solar panel for recharging not included, relying on other power sources for full recharge
- May be bulky for some users seeking ultra-lightweight portable options
Medistrom Pilot 24 Lite CPAP Battery Bundle
The Medistrom Pilot 24 Lite CPAP Battery Bundle stands out as an ideal choice for travelers who need reliable, airline-approved power backup for their CPAP machines. Weighing just 1.3 pounds and featuring a 95Wh capacity, it’s TSA approved and perfect for travel and camping. The bundle includes a built-in LED flashlight and a USB port to charge phones and tablets, making it versatile. Its compact size, combined with positive customer reviews and easy online availability, makes it a popular option. Whether for emergencies or regular travel, this lightweight, dependable power supply guarantees your CPAP stays operational wherever you go.
Best For: travelers and camping enthusiasts who need a lightweight, TSA-approved backup power source for their CPAP machines and device charging needs.
Pros:
- Compact and lightweight at only 1.3 pounds, making it highly portable for travel and outdoor activities
- TSA approved and airline-friendly with a 95Wh capacity, suitable for air travel
- Built-in LED flashlight and USB port enhance its versatility for emergencies and device charging
Cons:
- Requires a compatible lithium-ion battery (not included in the bundle)
- Customer ratings are generally positive but indicate some users may find it less durable over time
- Limited capacity for extended use without recharging, which may require additional backup options
EASYLONGER CPAP Battery ES400 AIR, 148Wh Backup Power Supply for CPAP Machines
For those seeking a reliable backup power source for CPAP therapy during travel or outdoor adventures, the EASYLONGER CPAP Battery ES400 AIR stands out with its 148Wh capacity and broad device compatibility. It works seamlessly with popular models like ResMed S9, AirSense series, AirMini, and Philips DreamStation. The battery supports pass-through charging, so your device stays powered while recharging. With multiple output ports—including USB-C, USB-A, and a car socket—it can also charge phones, tablets, and other electronics. Compact and lightweight at just over two pounds, it’s designed for portability, safety, and convenience, making it an excellent travel companion for CPAP users.
Best For: CPAP users who need a portable, reliable backup power source for travel, camping, or outdoor activities.
Pros:
- Compatible with a wide range of CPAP models including ResMed and Philips DreamStation.
- Supports pass-through charging to keep devices powered during recharging.
- Lightweight and portable at just over two pounds, ideal for travel.
Cons:
- May require additional power for large CPAP units with humidifiers and heaters.
- Solar panel charging requires an 80W panel, which is not included.
- Limited capacity for extended use with high-power CPAP devices or multiple devices simultaneously.
EASYLONGER ES270 CPAP Battery for Air Travel
If you’re traveling with a low-power CPAP machine, the EASYLONGER ES270 battery stands out as an ideal choice thanks to its airline-approved 99.9Wh capacity. It’s compatible with popular devices like ResMed AirMini, AirSense, and DreamStation, offering up to 8 hours of use with humidification off. The battery features fast charging—reaching full in just 2 hours—and includes a wireless charging pad for smartphones. Its compact, lightweight design guarantees portability, and safety is prioritized with built-in protections. Perfect for travel, camping, or emergencies, the ES270 provides reliable, on-the-go power without hassle.
Best For: travelers, campers, and emergency preparedness individuals using low-power CPAP machines seeking portable, airline-approved power solutions.
Pros:
- Compact, lightweight design enhances portability for travel and outdoor use
- Fast charging capability fully recharges in just 2 hours, saving time
- Includes wireless charging pad and multiple charge cables for versatile device compatibility
Cons:
- Limited to low-power CPAP devices; high-power models may require turning off humidification and heating to extend runtime
- Cannot power high-energy-consuming CPAP machines or devices with humidification and heating enabled for extended periods
- Battery capacity of 99.9Wh may not suffice for longer trips without recharging
Backup Power Supply & Travel Battery (2nd Gen) with 150Wh Swappable Cell Pack
Travelers and CPAP users seeking reliable backup power will appreciate the Backup Power Supply & Travel Battery (2nd Gen) with its 150Wh swappable cell pack, which provides extended runtime without adding bulk. Its compact design (8.7 x 4.8 x 0.9 inches, 3 pounds) makes it easy to carry during travel or camping. Compatible with popular CPAP devices like ResMed AirSense, DreamStation, and Luna G3, it charges using your existing AC supply—no extra charger needed. The innovative swappable cell pack lets you extend runtime effortlessly, and FAA approval guarantees safe in-flight use. This reliable backup keeps your devices powered anywhere you go.
Best For: travelers and CPAP users seeking a reliable, lightweight backup power solution that is FAA-approved and compatible with popular CPAP devices.
Pros:
- Compact and lightweight design (8.7 x 4.8 x 0.9 inches, 3 pounds) for easy portability during travel or camping.
- Swappable 150Wh cell pack allows for extended runtime without adding bulk.
- Compatible with a wide range of CPAP devices and charges using existing AC supplies, no extra charger needed.
Cons:
- One of the batteries included is nonstandard, which may limit replacement options.
- Slightly higher price point compared to basic portable batteries due to advanced features.
- Limited capacity (150Wh) may not support very high power-consuming devices for extended periods.
Krisdonia Portable Laptop Charger with 27000mAh 130W Power Bank
The Krisdonia Portable Laptop Charger with 27,000mAh and 130W power output stands out as an ideal choice for anyone needing reliable, high-capacity energy on the go. It supports up to 130W AC output, enabling it to charge laptops, drones, projectors, and more effectively. With fast recharging via its 19V/2A input, it’s ready quickly for your next adventure. Its large capacity charges smartphones multiple times and even powers a 12” MacBook 1.5 times. The device features QC 3.0 fast charging, pass-through capability, and robust safety protections. TSA-approved and compact, it’s perfect for travel, outdoor activities, and emergency use.
Best For: travelers, outdoor enthusiasts, and professionals needing reliable, portable power for multiple devices on the go.
Pros:
- Supports up to 130W AC output, capable of charging laptops, drones, projectors, and more.
- Fast recharging time of approximately 4.5 hours with included charger, saving 60% recharge time.
- Pass-through charging and multiple safety protections ensure safe, continuous power and durability.
Cons:
- The large capacity may add some bulk to the device, reducing portability for very compact carry.
- Requires a separate USB-C cable if charging devices via USB-C (not included).
- Limited to a 12-month warranty, which may be shorter than some competitors’ offerings.
Pilot-24 Lite CPAP Battery Backup Power Supply (95Wh)
The Pilot-24 Lite CPAP Battery Backup Power Supply (95Wh) stands out as an ideal choice for anyone needing reliable, portable power for their CPAP machine during trips or emergencies. With up to 16 hours of runtime on a single charge, it’s perfect for camping, travel, or off-grid use. Its compact size (just over 2.5 inches) and lightweight design (1.3 pounds) make it easy to carry. Compatible with many 24V CPAP models, it recharges in just 2–3 hours and is TSA-approved, FAA-compliant, and travel-friendly. Plus, its durable aluminum case and industrial-grade cells guarantee long-lasting performance wherever you go.
Best For: travelers, campers, and anyone needing a reliable portable power source for their CPAP machine during trips, camping, or emergencies.
Pros:
- Provides up to 16 hours of runtime on a single charge for extended use away from outlets
- Compact, lightweight design (1.3 lbs) with durable aluminum casing for easy portability
- Recharges quickly in 2–3 hours and is TSA-approved, FAA-compliant for hassle-free travel
Cons:
- Cables for some CPAP models like AirSense 11 and S9 are sold separately
- Actual runtime may vary depending on device pressure and model specifics
- Only compatible with 24V CPAP machines; not suitable for other voltage requirements
EASYLONGER CPAP Battery Backup Power Supply (ES720)
If you need a reliable backup power source for your CPAP on the go, the EASYLONGER CPAP Battery Backup Power Supply (ES720) stands out with its 266.4Wh capacity, which exceeds airline limits and makes it ideal for outdoor camping and off-grid use. It’s compatible with popular models like ResMed, Philips Dreamstation, and Luna G3, and features a 180W cigarette lighter socket plus adjustable DC outputs. The ES720 supports multiple charging methods, including AC, USB-C, solar, and car outlets, and offers safety protections like over-charge and short-circuit prevention. Its pass-through charging allows simultaneous device use and recharging, ensuring dependable power wherever you are.
Best For: travelers, outdoor enthusiasts, and those needing a reliable backup power source for CPAP devices during off-grid or emergency situations.
Pros:
- High capacity (266.4Wh) suitable for extended use and exceeds airline limits.
- Compatible with multiple CPAP models and portable devices via various charging options.
- Equipped with safety features like over-charge, short-circuit protection, and pass-through charging for continuous use.
Cons:
- Requires voltage converter when using the cigarette lighter socket with certain devices.
- Not compatible with Luna G3 heated tube.
- Bulkier than some smaller portable power banks, which may affect portability for some users.
27000mAh Portable Laptop Power Bank with AC Outlet (TSA-Approved)
Travelers needing reliable power on the go will appreciate the 27000mAh Portable Laptop Power Bank with AC Outlet, especially since it’s TSA-approved and designed for airline travel. Its compact size and 2.6-pound weight make it easy to carry on planes, while the 99.9Wh capacity supports laptops, phones, mini fridges, and even small appliances under 130W. With a 130W AC outlet and multiple USB ports, it can charge four devices simultaneously. Recharging takes just 4-5 hours, and the LED display keeps you updated on battery levels. Built with durable lithium-ion cells and safety protections, it’s a versatile, dependable power solution for travel, outdoor adventures, or emergencies.
Best For: travelers, outdoor enthusiasts, and professionals who need reliable, portable power for multiple devices on the go, including small appliances and electronics.
Pros:
- TSA-approved 99.9Wh capacity makes it airline-friendly and easy to carry during travel
- Supports simultaneous charging of four devices with multiple ports, including AC, USB, and Type-C outlets
- Compact, lightweight design (2.6 lbs) with a clear LED display for easy battery monitoring
Cons:
- Limited to devices under 130W, so larger appliances cannot be powered
- Charging time of 4-5 hours may be longer for some users needing quick turnaround
- Higher price point compared to standard portable chargers due to its multiple features and capacity
Pilot-24 Lite Battery with Car Charger, 95Wh CPAP Battery Backup Power Supply
Designed for those who need reliable power on the go, the Pilot-24 Lite Battery with Car Charger offers a compact 95Wh capacity that’s TSA-approved and FAA-compliant. Weighing just 1.3 pounds, it’s perfect for travel, camping, or emergencies, compatible with multiple 24V CPAP models like AirMini, AirSense 10, and DreamStation Go. It provides up to 16 hours of operation on a single charge and recharges in only 2–3 hours. Built with a tough aluminum case and LG cells, it’s durable enough for outdoor adventures. Included cables connect directly to popular CPAP devices, making this battery a versatile backup power option wherever you need it.
Best For: travelers, campers, and emergency preparedness individuals who require a reliable, portable power source for their CPAP devices on the go.
Pros:
- Compact and lightweight at only 1.3 pounds, ideal for carry-on luggage and travel.
- Provides up to 16 hours of continuous CPAP operation on a single charge, ensuring extended use.
- Durable construction with an aluminum case and LG cells, suitable for outdoor and rugged environments.
Cons:
- Cables for some CPAP models like AirSense 11 and S9 are sold separately, requiring additional purchases.
- Limited to 95Wh capacity, which may not be sufficient for very long trips without recharging.
- Recharging time of 2–3 hours, while quick, may still be a concern for frequent travelers needing rapid turnaround.
Zopec Explore Mini CPAP Battery UPS Backup
The Zopec Explore Mini CPAP Battery UPS Backup stands out as the smallest and lightest travel battery, making it an ideal choice for frequent travelers and outdoor enthusiasts who need reliable power on the go. Weighing just 1 pound and measuring 6.5 x 3 x 1 inches, it’s perfect for air travel, camping, or RV trips. Built with Panasonic Lithium-Ion cells and featuring solid-state cooling, it operates quietly and supports multiple voltages automatically. It delivers up to two nights of power and recharges quickly in 1.5 hours. Compatible with all major PAP devices, it’s FAA-compliant and comes with essential accessories, offering peace of mind wherever you travel.
Best For: travelers, campers, and outdoor enthusiasts who need a compact, reliable backup power source for their CPAP or APAP devices during trips.
Pros:
- Ultra-lightweight and small size for maximum portability
- Supports multiple voltages automatically for wide device compatibility
- Provides up to two nights of power with quick 1.5-hour recharge time
Cons:
- Limited runtime if using multiple devices simultaneously
- Requires additional cables for some PAP models not included in the standard kit
- Still a niche product with a relatively high price point for casual users
Renogy 72000mAh 12V Power Bank with Wireless Charging
If you need a reliable power source that can handle multiple devices during extended trips or off-grid situations, the Renogy 72000mAh 12V Power Bank with Wireless Charging is an excellent choice. It offers a massive capacity of 266Wh, supporting five devices at once, including laptops with fast 60W PD USB-C ports. Its dual USB-C ports enable rapid recharging via solar or USB-C, and it features a 12V cigarette port for CPAP machines. The device includes wireless charging for smartphones, a flashlight, and durable design, making it versatile for outdoor or emergency use. Though discontinued, it remains a robust option for portable power needs.
Best For: outdoor enthusiasts, campers, and emergency preparedness individuals seeking a high-capacity, versatile portable power source for multiple devices.
Pros:
- Massive 266Wh capacity supports multiple devices simultaneously, including laptops and smartphones.
- Fast charging with 60W PD USB-C ports and multiple recharging options via solar or USB-C.
- Includes useful features like a 12V cigarette port, wireless charging pad, and built-in flashlight for outdoor and emergency use.
Cons:
- Discontinued by the manufacturer, which may affect availability and warranty support.
- Cannot be used onboard airplanes or to charge earbuds and smartwatches wirelessly.
- No AC outlet included, requiring additional adapters for certain devices.
iWALK 10000mAh Wireless Power Bank with Fast Charging and LED Display
Efficient and reliable, the iWALK 10000mAh Wireless Power Bank stands out for medical professionals who need fast, safe charging on the go. It supports 30W PD fast charging for both input and output, charging devices up to 40% faster—just 30 minutes for an iPhone 15 Pro to reach 60%. With Qi2 certification, it offers 15W wireless power transfer, fully charging an iPhone 15 Pro Max approximately 1.5 times. Its cooling system prevents overheating, ensuring safety during use. The ergonomic design includes a LED display, a detachable USB-C cable, and broad device compatibility, making it an essential travel companion.
Best For: medical professionals and travelers who require fast, safe, and reliable wireless charging on the go.
Pros:
- Supports 30W PD fast charging for quick power-up of devices.
- Qi2 certification ensures efficient and safe 15W wireless charging.
- Equipped with MagCool 2.0 cooling system to prevent overheating during use.
Cons:
- Limited to a 10,000mAh capacity, which may require multiple charges for some devices.
- The wireless charging speed is capped at 15W, slower than some higher-wattage chargers.
- The device’s size and weight might be less convenient for very compact travel setups.
Factors to Consider When Choosing Airline-Approved Battery Packs for Medical Devices
When selecting an airline-approved battery pack for medical devices, I focus on key factors like compliance with airline regulations and power capacity limits to guarantee safety and legality. I also consider device compatibility, portability, and how easy it is to recharge the pack during travel. These points help me choose a reliable, practical option that fits my travel needs.
Airline Regulations Compliance
Ensuring your medical device’s battery pack complies with airline regulations is essential for smooth travel. Airlines typically limit carry-on lithium-ion batteries to 100Wh, but some permit up to 160Wh with airline approval. Batteries over 100Wh generally need approval and must be carried in carry-on luggage, not checked baggage. Proper labeling and documentation are often required to meet TSA and FAA standards, making security screening easier. Always verify your airline’s specific policies about battery size, quantity, and packaging before flying. Safety features like overcharge and short-circuit protection are usually mandated, guaranteeing safe handling during travel. Staying informed about these regulations helps prevent delays or confiscation, so double-check airline guidelines to ensure full compliance.
Power Capacity Limits
Choosing the right battery pack for your medical device requires careful attention to power capacity limits, as airline regulations set strict maximums to guarantee safety. Typically, carry-on lithium-ion batteries must not exceed 100Wh, ensuring they pose minimal fire risk during flights. Batteries between 100Wh and 160Wh need airline approval and are subject to additional restrictions, making planning essential. To determine capacity, multiply the battery’s voltage by its amp-hour rating (Wh = V x Ah). Many medical device batteries are engineered to stay within these limits, balancing power needs with safety compliance. Staying within these thresholds helps prevent delays or confiscation at security. Always verify your battery’s capacity and airline policies before travel to ensure a smooth journey with your essential medical power source.
Device Compatibility Needs
Selecting a battery pack that matches your medical device’s specific requirements is crucial for safe and effective use during travel. First, make certain the capacity doesn’t exceed 99Wh, as higher capacities may need special airline approval. Next, verify that the battery’s voltage and output specifications align with your device’s needs to prevent malfunctions or damage. It’s also essential to confirm the battery includes compatible cables or adapters designed for your device model, ensuring a secure connection. Check that the power output—whether 12V, 24V, or a specific wattage—meets your device’s demands. Finally, review manufacturer guidance to confirm the battery pack is compatible with your device’s make and model, helping you avoid potential compatibility issues and ensuring reliable performance during your travels.
Portability and Size
When traveling with medical device battery packs, portability and size are key considerations to guarantee ease of use and compliance with airline regulations. I always check that the battery’s capacity doesn’t exceed the airline’s limit of 100Wh, or 160Wh with approval. Choosing a compact, lightweight pack—preferably under 2 pounds—makes it easy to carry in my bag or pocket. I look for slim, portable shapes that fit comfortably without adding bulk. Confirming the dimensions align with standard carry-on size restrictions is essential to avoid issues at security. For added convenience, I prefer models with integrated handles or carrying cases, which make handling and transportation smoother. Ultimately, a lightweight, appropriately sized battery pack ensures I stay powered without hassle during travel.
Recharging Options Available
To make certain I stay powered throughout my travels, I look for battery packs that support multiple recharging options like AC wall adapters, USB-C PD chargers, car chargers, and even solar panels. Having versatile recharging methods ensures I can top up my battery no matter where I am, whether at a hotel, in a vehicle, or outdoors. Fast-charging capabilities are also essential, so I can quickly restore power within 2-6 hours, minimizing downtime. Pass-through charging is a bonus, letting me use my device while the battery recharges—ideal during busy travel days. Ultimately, I confirm the pack meets airline regulations, typically around 100Wh to 160Wh, and comes with safety features like a BMS for secure, reliable recharging from various sources.
Safety and Durability
Ensuring safety and durability is crucial when choosing airline-approved battery packs for medical devices, especially since these batteries must withstand the rigors of travel while maintaining reliable performance. I look for batteries with certified Lithium-ion or LiFePO4 cells that meet strict safety standards, including protections against over-charge, over-discharge, and short circuits. An integrated Battery Management System (BMS) is essential to prevent overheating, over-voltage, and thermal runaway during use and charging. I also verify that the device has undergone thorough safety testing and certification by authorities like FAA, TSA, or IEC, ensuring air travel compliance. Additionally, I prefer batteries with a high cycle life—over 3,000 charge cycles—and sturdy, impact-resistant casings to withstand handling and reduce damage risks during transit.
Frequently Asked Questions
What Are the Airline Regulations for Carrying Medical Device Batteries?
Airline regulations for carrying medical device batteries require that I carry them in my hand luggage, with batteries properly protected against short circuits. I make certain to carry the necessary documentation, like a physician’s note or device information. I also follow specific watt-hour limits, usually under 100Wh for most devices, and ensure batteries are securely packed to prevent damage. It’s always best to check with the airline beforehand to avoid surprises.
How Do Battery Weight and Size Impact Airline Travel Compliance?
Battery weight and size directly impact airline travel compliance because airlines set limits to make certain of safety during flights. Heavier or bulkier batteries may require special handling or approval, while compact, lightweight packs are easier to carry onboard. I always check my airline’s regulations beforehand and choose smaller, lightweight battery packs to avoid delays or issues at security. Staying within size and weight limits helps me travel smoothly with my medical device.
Are There Specific Certifications Required for Airline-Approved Medical Batteries?
Yes, there are specific certifications required for airline-approved medical batteries. I always guarantee they meet IATA (International Air Transport Association) and FAA (Federal Aviation Administration) standards, which include UN 38.3 testing for safety and lithium battery regulations. These certifications confirm the batteries are safe for air travel, preventing hazards. It’s vital to verify these certifications before traveling, so your device remains powered and compliant during your journey.
How Long Can These Batteries Reliably Power Medical Devices During Travel?
Did you know that most airline-approved medical batteries can reliably power devices for 4 to 8 hours? I’ve found that with a fully charged, certified battery pack, you can usually get through your travel day without worry. It’s essential to check your device’s power needs and the battery’s capacity before flying. I always carry an extra pack just in case, ensuring continuous support during my trip.
What Are the Best Practices for Packing and Handling Power Supplies on Flights?
When packing power supplies for flights, I always carry them in my carry-on to comply with airline rules and prevent damage. I make sure they’re in their original packaging or a protective case, and I keep the devices powered off during security checks. I also carry extra batteries in case of emergencies and avoid exposing them to extreme temperatures or moisture for safety and peak performance.
Conclusion
Choosing the right airline-approved battery pack is like finding a trusted companion for your journey—reliable, compact, and ready to power your medical needs wherever life takes you. With options like the Freedom CPAP Backup or Zopec Explore Mini, you’ll have peace of mind riding the winds of travel. Remember, the right battery isn’t just a device; it’s your lifeline soaring silently through the skies, always there when you need it most.
