5V 2A USB 20000mAh Heated Vest Battery Pack Power Bank for Heated Jacket Hoodies Stadium Seats Fast Recharging

Highlights: * Relatively small and light for a 20,000 mAh battery * Has 3 ports: 2x USB-C and 1x USB-A port * Fast USB-C charging * Clear display for charge level Considerations: * No DC port so it’s limited to powering heated vests via 15W USB-A * Display on the front so you have to pull it out of a pocket to read it * Not waterproof so keep it dry during use * Perhaps being a bit thinner at the expense of being wider and longer would be more comfortable in a vest pocket This power bank can work like any other - charge it up with a suitable USB-C power source and then use it to power nearly anything that can plug into a USB-A or USB-C port. It has a lot of power (20,000mAh) for its size and a handy digital display that shows the percentage of charge left or progress while been charged. When the bank is in a pocket powering a vest’s heaters, the display is on the front and not the top, so you can’t easily peek at the charge level just by opening the pocket. The ports are all on the top edge for easier access when in a pocket. Most heated vests can be powered by USB-A or DC power. Those that accept either will usually get hotter and/or work longer if powered by DC since DC typically provides higher voltage and amperage than USB-A. My heated vest has a cord with both a USB-A and a DC barrel plug but sadly this battery only has USB-A and USB-C. The USB-A port will still work fine and according to my vest’s manual, this 20,000mAh power bank should be able to keep you warm for around 10hrs before needing a charge. When it’s time to charge the battery, you can leave it in the vest pocket and connect a USB-C charger with your longer cable of choice or remove the battery from the vest pocket and charge it anywhere else (short USB-C cable provided). The battery charges quickly via USB-C which is great since USB-C is more common these days. The manual mentions that the battery should be kept dry and away from extreme temperatures. Since this battery is not protected from rain or snow, it’s best to be careful and keep it safely in your vest pocket where it might be shielded from inclement weather. At 314.1g (11.1oz or just over 2/3 lb), I wouldn’t call this battery light but it probably is lighter than many others of similar capacity. The rectangular shape will add a bit of bulk to the pocket in your vest, but it’s not too bad a compromise for being warm for a long time. In my photos, I show a comparison to another heater battery with a lower capacity of 18,400mAh. These two batteries have similar dimension but this battery is just a tad taller for its extra 1,600mAh of power. While this battery is compact, being a tad thinner (yet a bit taller and wider) might be more comfortable in a vest pocket. Overall, this high-capacity power bank is especially suited for use as a power source for a heated vest or similar items. It’s a bit of weight and bulk in a vest pocket but has more than enough power to keep you warm for a long time and can still be useful as a generic power bank when not needed to power a heater. Read more

This 20,000mAh power bank packs an impressive amount of power into a surprisingly compact body, making it a strong choice whether you’re running heated clothing, powering a portable setup, or just keeping phones and gadgets topped off. The digital percentage display is one of its best features—no more guessing how much charge is left, which is especially helpful when you’re depending on it for long stretches outdoors. Build quality is solid, with a durable plastic housing and three ports: two USB-C (input/output) and one USB-A for standard devices or heated vests. It’s lighter than many battery packs with similar capacity, yet still has enough heft to feel substantial and reliable. Charging speeds are decent through USB-C, and it handles phones, tablets, and accessories without issue. The capacity feels accurate too—multiple users confirmed it pushes out close to its rated power. There are a few trade-offs worth noting. It’s not waterproof, so you’ll want to keep it dry if you’re using it in cold or damp environments. Recharge time is on the slower side unless you use a high-output charger. And while the rectangular shape fits well in a vest pocket or bag, it does add noticeable weight. For heated vests that support both USB and DC input, USB-A won’t reach the hottest settings, so performance will depend on your specific gear. Overall, this is a dependable, high-capacity battery that excels at long runtime and versatility. The clear display, dual USB-C ports, and compact size make it easy to recommend—especially if you want something strong enough for all-day use without hauling around a brick-sized pack. Read more

This power bank is awesome! Super lightweight for a 20,000mAh battery—easy to toss in a bag and take on the go. It works perfectly with 5V USB heated clothing, keeping me warm for hours. The LED display makes it easy to see exactly how much charge is left, and it recharges really fast with USB-C. Plus, the safety features give peace of mind that everything’s protected. Definitely a travel-friendly must-have! Read more

Worked great with camping chair. Easy to use. Read more

This battery pack is titled for use with a heated clothing item, which is what I intend to use it for, but the box itself suggests using it to charge your electronic items like cell phones. So consider it a mixed use charger with lots of juice! This is a heavy battery pack, so be prepared for a little bit of weight if using it to power a heated vest and such. Most clothing battery packs are thin but also only 5,000mAh, but I wanted something larger that would last much longer, and this one seems to fit the bill! The weather hasn't been cold enough to properly test battery life, but I used it for a heated seat pad (plan to use while hunting) and had it on High for over an hour and it used up only 15% of the battery life. As for charging an older Samsung phone, it did about 3, to 3.5 charges, so it seems to be pretty long-lasting so far. It's a great battery and it does not get hot while charging your item, nor when it is being recharged. Which is a surprise as my other battery packs can get pretty warm. Read more