Shekila Shields—November 19, 2025
I got this battery pack for my heated vest and it works great. It’s small and lasts for hours, which makes cold days so much easier. I like that it has both 7.4V and 5V so I can power my vest or charge my phone if needed. Fits perfectly in the vest pocket and feels reliable. It does take a while to recharge, but overall it’s super practical and worth it. My son is a trucker driver up North and this battery last his whole 10hr. Work days. This is a great investment. Read more
Arisbel—December 5, 2025
This 7.4V/5V 10000mAh battery is an excellent upgrade for heated vests and jackets, offering strong, long-lasting power in an incredibly compact size. The dual-voltage output makes it compatible with popular brands like ORORO and Venustas, and the LED display is a great touch—letting you easily monitor remaining battery life at a glance. Despite its small form factor, it provides reliable heat for hours, making it ideal for outdoor work, sports, or travel. Lightweight, portable, and efficient, it’s a smart replacement or backup battery for anyone relying on heated apparel. Read more
Lindsay—December 24, 2025
If you own a heated vest, you know that the performance is only as good as the battery driving it. After testing the ColdBye 7.4V replacement pack, it has quickly become my go-to over the original battery that came with my gear. Many universal power banks are only 5V, which often results in lukewarm heat. This 7.4V pack delivers the higher voltage necessary to get the heating elements up to their maximum temperature quickly. It’s slim enough that I don't feel a heavy "sag" in my vest pocket. It fits comfortably against the body without being bulky or intrusive during outdoor activities like hiking. On a medium setting, I’m getting a solid 6–8 hours of consistent warmth. Even on the highest setting, it holds its own through a full morning of freezing temperatures. The inclusion of a USB output is a great "just in case" feature, allowing me to top off my phone in an emergency without needing a separate brick. This is a high-quality, dependable power source. It feels rugged, charges relatively quickly for its capacity, and most importantly, it keeps the heat consistent rather than tapering off as the battery drains. If you need a backup for long days outdoors or a replacement for a lost charger, this is a perfect fit. Read more
PRINCE—December 23, 2025
I bought this for my sons heated vest while hunting and it last atleast 10 hours! We found out you can also charge your phone with this little handy battery pack! It’s small, lightweight and holds a charge for a long time! Great quality! Read more
Catrina Williams—December 23, 2025
I bought this Coldbye battery to use with my heated vest and pants, and it works exactly as advertised. It heats up fast, holds a solid charge, and the digital display makes it easy to see how much power is left. It’s lightweight enough to wear without feeling bulky and lasts several hours on medium heat. Easy to charge and dependable in cold weather. Definitely a good buy if you use 7.4V heated apparel. Read more
Hye Jin Yoon—December 16, 2025
This battery pack is compact yet powerful. The dual output is very convenient since I can also charge my phone when needed. Battery life is solid. I really like the LED display, which makes it easy to check the remaining battery level at a glance. Overall, it’s reliable, portable, and works great for heated clothing and outdoor use. Read more
PSFanboy—December 29, 2025
The battery is small and sleek. It fits in any inner pocket for your heated jacket or pants. It last really long and provides enough power to generate maximum heat quickly. And just as an FYI, this pack is universal so in warmer season, you can use it as a cell phone charger since it is not good for the battery cells inside to let it sit Read more
Greg—January 2, 2026
This battery was more compact than my original battery. Because this has multiple ports (USB-A,C, & 7.4 volt) I am able to use it with various heated apparel options and has provided hours of heating already without issue. The battery charges a bit slower than the original, but it is not a deal breaker. I would recommend. Read more
