Comparison: Best Portable Electric Blanket (Updated | Dec 16th)
When winter’s chill bites, there’s nothing like the cozy embrace of a heated blanket. But what if you could take that warmth anywhere you go? We’ve tested the top models to bring you our expert picks, comparing heating speed, battery life, and safety features. Whether you’re commuting to work or camping under the stars, we’ll help you find the perfect portable blanket to keep you comfortably warm wherever life takes you.
Editor’s Choice
Best for a specific purpose
- Best for premium cordless freedom: Zireot Cordless Heated Blanket
- Best for luxury fur comfort: RayoLife Cordless Heated Blanket – Portable Battery Operated Throw with Rechargeable Pack
- Best for extended battery life: Shaggy Heated Throw Blanket with Power Bank- Soft Faux Fur Battery Heated Blanket
- Best for smartest heating tech: Cordless Heated Blanket with Hood
- Best for multi-zone heating: KSFJZF Heated Blanket
- Best for versatile usb power: greenoak USB Portable Heated Electric Blanket – Cordless Heated Throw Blanket for Outdoor with 3 Heating Levels/Wearable Shawl Gifts for Travel
- Best for full-body coverage: ZonLi Heated Blanket Battery Operated
- Best for all-weather protection: ZonLi Heated Blanket Battery Operated
- Best for safety certified choice: ZonLi Heated Blanket
- Best for stadium ready warmth: Portable Cordless Heated Blanket for Stadium
Product Comparison: Best Portable Electric Blanket
Premium Cordless Freedom
Zireot Cordless Heated Blanket, Battery Operated & Rechargeable Throw – Portable Electric Blanket with Far-Infrared Heating, Faux Rabbit Fur, 9000mAh Battery Powered, Travel, Office & Outdoor Use
Zireot
- Cordless Freedom, Portable Warmth: Experience true mobility with our cordless heated blanket – no wires, no outlets, just instant warmth wherever you go. Perfect for travel, outdoor events, office naps, or cozy nights at home.
- Advanced Far-Infrared Heating Technology: Unlike traditional wire-heated blankets, this battery operated heated blanket uses carbon nanotube + infrared heating, delivering safer and more evenly distributed warmth without overheating spots.
- Luxuriously Soft & Skin-Friendly: Crafted from high-quality faux rabbit fur, this portable electric blanket feels ultra-soft against your skin, gentle enough even for seniors or people with sensitive skin. Enjoy warmth that feels like a comforting hug.
- Rechargeable Power That Lasts: Includes a 9000mAh rechargeable battery, providing up to 2-6 hours of consistent heat. Designed for convenience, the battery also doubles as a USB power bank for your smartphone or other devices.
- Versatile Design for Every Lifestyle: The zip-up design transforms easily from a shawl to a lap blanket, giving you warmth that adapts to every moment – from cheering at a hockey game to relaxing during night shifts or camping trips.
- ⚠Important Note – Designed for Portable Warmth, Not Full-Blanket Heating: Due to the natural power limits of battery-operated blankets, it’s not possible for cordless heated blankets to provide full-surface heating or the same heat output as plug-in models. Our blanket features targeted heating zones (shown in the second image) to deliver warmth right where you need it. Thanks to the far-infrared carbon film heating technology, heat is distributed efficiently and evenly, offering excellent warmth performance for a cordless design while remaining lightweight, safe, and portable.
Luxury Fur Comfort
RayoLife Cordless Heated Blanket – Portable Battery Operated Throw with Rechargeable Pack, Far Infrared Heat, Soft Faux Rabbit Fur for Home, Office, Travel, Camping
RayoLife
- Luxurious Faux Rabbit Fur Comfort RayoLife cordless heated blanket is crafted from ultra-soft faux rabbit fur, offering a plush, cozy feel while delivering warmth anywhere you go – perfect as a portable heated blanket for home, travel, or camping.
- Rechargeable Battery Pack & 2H+ Heating Time Enjoy a minimum of 2 hours of continuous warmth with the included rechargeable battery pack. This battery operated heated blanket gives you freedom without outlets, ideal for outdoor adventures and daily comfort.
- Advanced Carbon Nanotube Heating System Featuring far-infrared heating technology—known for its deep, soothing warmth—our carbon nanotube flexible film is a safer and thinner alternative to traditional wires. This battery-powered blanket delivers even heat, is lightweight and breathable, and is safely machine-washable.
- Adjustable Heat & Safety Protection Choose your ideal temperature level with multiple heat settings. RayoLife rechargeable heated throw blanket includes built-in safety features such as overheat protection and stable power output for worry-free use.
- Perfect Gift for All Seasons From chilly offices to long car rides or outdoor camping trips, this heated blanket with battery pack makes an ideal gift. A portable, cordless, and USB powered heated blanket designed for warmth and luxury.
Extended Battery Life
Shaggy Heated Throw Blanket with Power Bank- Soft Faux Fur Battery Heated Blanket, Fast Heating, 3 Heat Setting, Machine Washable Electric Blanket, Cordless Heated Blanket 59″x35.5″(Gray-Green)
KSFJZF
- Cordless Freedom & Portability: Experience unrestricted warmth with our Battery Heated Blanket – no outlets needed! Perfect for outdoor adventures like camping or cozy nights on the couch, this Cordless Heated Blanket lets you move freely.
- Ultra-Fast Heating Technology: Get instant comfort in seconds! The advanced system ensures rapid heat distribution across the entire 59×35.5 in Battery Heated Blanket, ideal for chilly mornings or unexpected cold snaps.
- Large Ccapacity Power Bank: Equipped with a 20000mAh large capacity power bank, it can safely and efficiently provide power for this cordless electric blanket. After a full charge, it can be used for up to 10 hours at the lowest gear, 6 hours at the middle gear, and 4 hours at the highest gear
- Long-Lasting 10-Hour Warmth: Stay toasty all day or night! A single charge delivers up to 10 hours of consistent heat to this Battery Heated Blanket, supporting extended use during office work, road trips, or camping in low temperatures.
- Customizable Comfort: Enjoy 3 adjustable heat settings (from gentle warmth to toasty high) in this plush machine-washable Battery Heated Blanket. Soft fabric provides luxury, while ETL certification guarantees reliability.
Smartest Heating Tech
Cordless Heated Blanket with Hood, USB Battery Powered Heated Wearable Blanket with 9 Heating Zones, 20000 mAh Power Bank, 3 Levels, Portable Heated Throw Blanket, Heated Shawl, Camping Blanket, Gift
Secluded Valley
- Smarter Heating & All-Day Warm from the Cordless Heated Blanket: Secluded Valley portable heated blanket delivers true comfort with 3 adjustable heat levels powered by the included 20,000mAh battery, offering up to 16 hours of soothing warmth. The battery heated blanket ‘s 9 AI-powered heating zones warm your body with balanced, safe heat. With ultra-soft double-sided flannel, the lightweight of wearable heated blanket make it a thoughtful, heartwarming heating blanket gift for your loved one.
- Cloud-Soft Warmth with Intelligent 3-Second Fast Heating: Made from double-sided, breathable, skin-friendly premium flannel, this rechargeable heated blanket feels like being wrapped in a cloud. Heat from the battery operated heated blanket rises in just 3 seconds. The built-in insulation cotton of the battery powered heated blanket locks in gentle, steady warmth, while nine AI-powered heating zones of the portable heated shawl cordless deliver balanced heat for your chest, shoulders, and back.
- 3 Heat Levels with Clear Light Indicators & Long Runtime: Customize your warmth easily with a single button on the heated blanket battery operated —press 3 seconds to power on, then tap to switch modes. Red light = 149°F for 8 hrs, White light = 131°F for 12 hrs, and Blue light = 113°F for 16 hrs. Each setting of the cordless electric blanket provides stable heat, warming up in seconds to keep you cozy whether you’re at home, working, or staying warm outdoor with out heated blanket portable.
- Gentle Cordless Warmth Wherever Life Takes You: Lightweight and fully cordless, this heated camping blanket moves effortlessly with you—whether you’re staying warm in the car, or exploring the outdoors. The flexible design of the portable heating blanket wraps comfortably around your shoulders, back, legs, or lap, delivering heat exactly where you feel the chill. A heartfelt battery powered blanket gift choice for family, friends, men or women, bringing warmth to any moment or celebration.
- Long-Lasting Cordless Warmth Anywhere: Powered by a safe, high-capacity 20000mAh battery, this heated electric throw blanket delivers up to 16 hours of comforting warmth. A built-in pocket fo the heated blanket throw keeps the power bank secure, while the included USB extension cable of the heater blanket, wall plug, and car adapter let you enjoy heat from laptops, outlets & your vehicle. Stay warm with this car heated blanket & travel blanket. This heating blanket throw is great everywhere.
- Washable, Foldable & Effortlessly Lightweight: Designed for easy care, this usb heated blanket can be hand-washed or machine-washed after removing the power bank. You could keep the heat blanket fresh and soft through repeated cleaning. The breathable fabric of the heated throw blanket cordless dries well, while the fully foldable, space-saving design means it never feels bulky or inconvenient. Easy to store, carry, and use, the battery operated heaters for indoors brings warmth without adding any burden.
- Exclusive Triple-Guard Safety: Our heated wearable blanket is engineered with an advanced Triple-Guard Safety System. Each heating zone of the heated blanket cordless features an AI temperature sensor that balances heat in real time to prevent burns. A built-in over-voltage shield of our warming blanket automatically cuts off power if abnormal input is detected, while the 5-minute auto cool-down gently switches from high to medium for added protection. The smart design of our battery blanket delivers safer warmth.
- Package Contents: Secluded Valley Battery Operated Blanket with Hood ×1, 20,000 mAh Power Bank ×1, User Manual ×1, 40″ Extension Cable ×1, Charging Adapter ×1, Car Charger ×1.
- Reliable 1-Year Support & 24/7 Assistance: Your comfort and confidence matters to us. That’s why our small heated blanket comes with a full 1-year warr-ant-y, offering more peace of mind. If you ever have questions or need help for our cordless electric blanket, our dedicated team is available 24/7 to provide prompt, friendly support. Whether it’s troubleshooting or feedback, we’re always here to ensure your experience stays smooth and worry-free.
Multi-Zone Heating
KSFJZF Heated Blanket, Cordless Portable Heated Throw Blanket, Battery Operated Heating Blanket with Rechargeable 20000mAh Power Bank, 59″ x 35.5″ Electric Heated Shawl, 3 Fast-Heating Levels (Navy)
KSFJZF
- KSFJZF is committed to providing buyers with the highest quality products and top-notch after-sales service. If you’re unsatisfied with this item for any reason, we’ll immediately send you a replacement or refund your purchase price! All our heated products have perfect after sales service support. If you have any questions about quality, size, battery or charger, please e-mail us
- Large Size Heated Blanket: At 59 x 35.5 inches, this heated shawl is large enough for most women and men, protecting knees and warming feet while also providing warmth. Compared to other heated shawls, this cordless heated blanket is designed with 3 fast heating levels and 8 heating zones to provide instant soothing warmth where you need it most
- 3 Fast-Heating Levels: The heating blanket provides 3 temperature levels: 45°C, 55°C and 65°C (±5°C). Simply long press the button for 3 seconds to turn it on / off, and short press to cycle through the 3 heating modes. It can be folded up and used at home, in the office, or camping, ensuring you’re always toasty
- Portable and Cordless Design: The KSFJZF portable battery powered heated blanket frees you from the constraints of an electrical outlet. The star-print heated blanket comes with a rechargeable battery 20,000mAh 7.4V/3A power bank. This cordless heating blanket provides 10 hours of continuous heating on a single charge, keeping you comfortable at home or outdoors
- Machine Washable Heated Throw Blanket: The battery operated heated blanke is machine washable, please remove the battery before washing, please use cold water and do not iron it. To keep the heated blanket being its best, we recommend air-drying or low-temperature drying, and do not connect the power bank until it’s completely dry
- Overheat Protection – When you turn on the heated throw blanket for the first time, it will automatically jump to the next gear after five minutes, and will no longer automatically change gears after changing the gear again. Note: Do not stack the heated blanket for a long time
- Quality Guarantee & Perfect Gift Idea: KSFJZF wearable heated blanket is made of high-quality polyester design, making it easier to wear and warmer than ordinary blankets. This is not only the best gift for women, grandma, seniors , but also a great choice for parents and friends, while it is an ideal choice for birthdays, Christmas, Thanksgiving, Valentine’s Day and travel
Versatile USB Power
greenoak USB Portable Heated Electric Blanket – Cordless Heated Throw Blanket for Outdoor with 3 Heating Levels/Wearable Shawl Gifts for Travel,Camping,Bed, Marble Grey Standard(Battery Not Included)
greenoak
- 【SERVICE & CARE】Greenoak focuses on product experience and reliable after-sales service. If you have any questions or are not satisfied, please contact us. We’ll promptly send a replacement or refund. This USB heated shawl requires a power source, and portable use can be achieved by connecting it to a power bank. (Battery Not Included)
- 【COZY HEATING ANYWHERE】Still troubled by the chill of winter? This USB heated blanket shawl keeps you warm with 8 heating pads and three settings (131°F/122°F/113°F). Connect to a power and hold the button for 3 seconds to activate steady warmth. providing steady comfort for cold nights or watching games at the stadium. The lightweight portable heated blanket can be used on the sofa, bed, car, or even outdoors while camping or traveling. Perfect for keeping cozy in any season.
- 【CORDLESS AND PORTABLE】Designed for convenience, the blanket has a zipper closure and a built-in pocket for holding a power bank (Battery Not Included). When paired with a power bank, it functions as a cordless heated blanket or battery operated heated blanket, freeing you from wires. It works with outlets, laptops, or car USB ports, making it a versatile wireless heated blanket for daily use. It’s also a warm gifts for family who often work or travel.
- 【WEARABLE AND FUNCTIONAL】The size of heated blanket is 43″x59″ and wearable shawl design, this blanket doubles as a heated shawl or heated wearable blanket. It keeps you warm while reading, gaming, or watching TV, without restricting movement. The zipper allows it to be secured around your shoulders, while the soft fabric drapes naturally, making it a stylish and functional heated blanket for women and men alike.
- 【PREMIUM FLANNEL FABRIC】Made of double-sided flannel, the blanket is soft, breathable, and machine washable. Durable yet gentle on skin, it delivers both warmth and comfort. Unlike bulkier options, this electric throw blanket feels lightweight while still providing effective heating. Whether used in an office, bedroom, or during long flights, it surrounds you with gentle heat that enhances your everyday experience.
- 【IDEAL GIFT FOR WINTER】This rechargeable heated blanket is a thoughtful choice for holidays and special occasions. It makes a wonderful gift for Christmas, Thanksgiving, birthdays, gifts for women, girlfriend gifts, or mom gifts. Warm, practical, and stylish, it shows care while offering everyday comfort. A great way to surprise loved ones with both function and warmth.
- 【USB Power Compatibility】This USB heated shawl works best with standard 5V/2A USB ports, such as computer/car/power bankand and can also be used with a wall outlet via the included adapter. Avoid using fast-charging (9V/12V) or non-standard USB outlets (such as certain boat or customized systems), which may cause it not to heat properly. If you have any questions or need help, please contact us anytime. We’re happy to assist and ensure your satisfaction.
Full-Body Coverage
ZonLi Heated Blanket Battery Operated, Wearable Portable Electric Blanket with Rechargeable Battery, 50″x60″ Cordless Heated Blanket, Waterproof, Machine Washable(Black)
ZonLi
- Smart Protection:This heated blanket is equipped with a built-in 2-hour auto-shutoff and overheat protection feature for your safety. After it turns off, simply press the power button on the blanket again to resume heating.
- Ultra-Soft & Windproof Design:Made with premium nylon and plush Sherpa fleece for a balance of durability and softness. Locks warmth in while keeping cold air out—perfect for home or commuting.
- Full-Body Heating Coverage:Features 6 built-in heating zones and 3 adjustable temperature levels. Heats evenly across your shoulders, waist, and legs, ensuring cozy comfort in minutes.
- Portable, Cordless Convenience:Rechargeable 10000mAh battery offers 2–5 hours of warmth. Compact and foldable, it’s easy to take from your sofa to your car, or from office to outdoors.
- Safe & Reliable Performance:Certified by UL/FCC/GCC with auto shut-off after 2 hours. Safe low-voltage design provides peace of mind for everyday use.
- Adapts Everywhere: Featuring a dual-mode design (blanket or outerwear), this portable heater meets diverse needs for outdoor activities and work. With 8 stylish color options, it perfectly blends practicality with style, positioning it as the ideal and thoughtful winter gift.
All-Weather Protection
ZonLi Heated Blanket Battery Operated, Wearable Portable Electric Blanket with Rechargeable Battery, 50″x60″ Cordless Heated Blanket, Waterproof, Machine Washable(Dark Grey)
ZonLi
- Portable & Compact for On-the-Go Warmth – This cordless heated blanket features a self-storing design that folds down to just 6x9x12.5 inches, making it incredibly lightweight and space-efficient. Perfect for camping, games, fishing, RV trips, and other outdoor adventures
- Six-Zone Targeted Heating – Equipped with 6 heating zones (neck/chest/back, each 3.9×6.3 inches) that deliver consistent warmth to key body areas(tips: quickly heated up to 104°F to 149°F). This battery operated heated blanket adapts to various cold conditions for personalized comfort.
- All-Weather Protection Durable & Comfortable – Made with a waterproof and wind-resistant outer layer plus a soft inner lining for snug warmth. This outdoor heated blanket performs reliably in extreme cold, rain, snow, or wind, keeping you comfortable in harsh conditions.
- Long-Lasting Battery and Dual Power Options – Equipped with a 10,000 mAh rechargeable battery, it provides continuous heating for up to 2 to 5 hours, making it ideal for extended outdoor use. Additionally, this battery-powered electric blanket features an optional plug-in mode (with a 4.6-foot extension cord), allowing you to worry about power issues. Note: The blanket will lose power every two hours and require a restart.
- Versatile Wearable Design Multiple Uses – Easily convert it into a cape or poncho using zippers and sleeve snaps for hands-free convenience. Reinforced corners with hooks allow it to be secured as a windproof camping mat. Machine washable and easy to clean.
- The Perfect Gift for Any Occasion: This rechargeable heated blanket makes an ideal gift for family, friends, or anyone who loves warmth. Whether for Christmas, birthdays, or other special occasions, this practical and thoughtful gift is sure to bring comfort and joy during the cold winter months. Show you care by gifting warmth!
Safety Certified Choice
ZonLi Heated Blanket, Portable Battery Operated Blanket, 10000mAh Large 50″x60″ Cordless Rechargeable Electric Throw for Adults, Camping, Car Travel & Home Use
ZonLi
- Heats Up Quickly, Stays Warm Longer:The ZonLi portable heated blanket heats up in just 3 minutes, reaching 104°F-149°F to relieve fatigue and keep you warm. Enjoy up to 2-5 hours of warmth, depending on your environment, with this battery operated heated blanket.
- Versatile & Portable Design:Use it as a heated shawl, decorative pillow, or classic throw blanket – all in one! Its cordless heated blanket design ensures maximum portability. The lightweight, foldable construction makes it perfect for camping, travel, and everyday commutes.
- Unparalleled Safety Guarantee:Safety is key! This battery operated heated blanket has passed 166 safety tests, exceeding UL standards. Features CE and FCC certifications, plus an auto shut-off every 2 hours for your peace of mind.
- Comfortable Fabric, Easy Maintenance:Made with soft polar fleece and cotton fleece, this heated blanket is skin-friendly and breathable. It’s easy to clean, as it’s machine washable and perfect for indoors or outdoors use, providing warmth all day.
- Thoughtful Gift Choice:A practical, luxurious gift for women, elders, or outdoor lovers. This cordless heated blanket makes a perfect Christmas gift, offering cozy warmth during the holiday season and lasting comfort all year round. Whether for birthdays, holidays, or special occasions, it’s a thoughtful way to show you care—ideal as a throw for comfort in any season.
Stadium Ready Warmth
Portable Cordless Heated Blanket for Stadium, Rechargeable USB Heated Throw Blanket for Outdoor, 3 Heat Settings Electric Heated Blanket for Office, Camping, 58”x 38” (Battery Pack Not Included)
Keltne
- 【Soft and Warm Comfort 】- – Be the envy of your friends and family by having the latest innovation in heated throw blankets. Perfect as an extra layer of heat for the sofa, chair, bed and hotel rooms! You can also take it on road trips by merely plugging the bonus 6 Foot USB extension cable into your car charger for extended trips or plug into any portable USB battery pack to stay warm, anytime, anywhere. Made of super soft fabric and updated heating technology, the fast heating in seconds.
- 【Cordless & Portable】– The battery heated blanket comes with USB adapter and 2-meter extension power cord, two usage methods, if you want to use this while move, you need a 5V2A battery pack ( battery is not included), the cord it plugs into is in the pocket, so the battery pack is easily stored in the pocket. Rest at home, watch movies, and work, you can use the adapter and extension cable for uninterrupted warmth, stay warm and cozy anywhere with this heated blanket throw, perfect for camping, outdoor activities, car rides and at home.
- 【Double Skin-friendly Fabric】– This cordless heated blanket is double layered fabric, with a flannel outer layer and crystal super soft inner layer, locking in warmth while making it softer, more delicate, and skin friendly fabric for extra warmth, comfortable and warm, sensitive skin can also be used, with a long service life, allowing you to enjoy a relaxed and warm feeling whether you are outdoors, traveling, in the office, and anywhere.
- 【Large Size Heated Shawl】 — Wireless heated blanket zipper design fact that it’s wearable is a game-changer too, when you’re working, playing, don’t worry about the shawl slipping off your shoulders, I can wrap myself up in it , for your back, abdomen, neck, shoulders, legs. Relieves fatigue, relieves stiff shoulders, tight lower back muscles, abdominal pain, menstrual cramps, cold feet, provides pleasant muscle relaxation, improves blood circulation, etc.
- 【Easy Care】– Cordless heated blanket machine washable and made from super cozy soft material, flannel material is stain resistant, easy to handle, very smooth and wrinkle free, machine washable, and does not deform. (Dry cleaning and high-temperature drying are not supported) both convenient and comfortable.
- 【100% Satisfaction Guarantee】– Customer satisfaction is our top priority. Whenever you encounter any problems, we will send you a replacement to ensure you are 100% satisfied, even after 30 days according to Amazon policy. We will meet any of your requirements, and providing customers with the best service and a happy shopping experience is our service tenet.
- 【Note】:After receiving the product: 1. Be sure to use our own adapter and cable, otherwise the blanket will not work properly 2. This product is vacuum packed. When the product is taken out of the package the switch button cannot be used, because the air in the switch button is drawn out during vacuum packaging. Please leave the product for 6-8 hours after taking it out of the vacuum packaging, the switch on/off button will return to normal.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Buying Guide
FAQs
What should I look for in a portable electric blanket?
Consider the blanket’s size, material, and heating settings to ensure comfort and versatility. Look for safety features like auto-shutoff and overheat protection for peace of mind. Battery life and charging speed are crucial for portability, so check the mAh rating and runtime.
How do portable electric blankets compare to traditional ones?
Portable electric blankets are battery-powered and designed for on-the-go use, while traditional ones plug into an outlet. Portables are often smaller and lighter but may have shorter battery life. Traditional blankets typically offer more consistent heat and larger coverage areas.
What are the key features to prioritize?
Adjustable heat settings allow you to customize warmth, while a fast-charging battery ensures convenience. Machine-washable materials make maintenance easy, and a compact design enhances portability. Some models also include USB ports for charging devices, adding extra functionality.
Are portable electric blankets worth the investment?
They offer excellent value for frequent travelers, outdoor enthusiasts, or anyone needing portable warmth. While pricier than regular blankets, their versatility and convenience justify the cost. Look for durable materials and long battery life to maximize your investment.
How do I choose the right size and material?
Select a size based on your intended use—smaller for personal use, larger for sharing. Soft, breathable materials like fleece or microfiber enhance comfort, while water-resistant options are great for outdoor use. Ensure the material is hypoallergenic if you have sensitive skin.
What safety features should I check for?
Auto-shutoff timers prevent overheating and conserve battery life, while overheat protection adds an extra layer of safety. Look for certifications like UL or ETL to ensure the product meets safety standards. Avoid blankets with exposed wiring or poor insulation.
How long does the battery typically last?
Battery life varies by model but usually ranges from 2 to 8 hours on a single charge, depending on the heat setting. Higher heat settings drain the battery faster, so consider your usage needs. Some models offer extended batteries or car chargers for longer trips.
Can I use a portable electric blanket outdoors?
Yes, many models are designed for outdoor use with water-resistant or weatherproof materials. Look for blankets with rugged construction and long battery life for activities like camping or tailgating. Ensure the blanket can withstand low temperatures without losing efficiency.