FITHOOD 603450 Battery 3.7v 1200mAh Lithium Polymer Rechargeable Battery with with JST Connector for Household Appliances

Perfect replacement battery for a Sylvania Bluetooth shower speaker. I soldered the connections and it fit perfectly.

super small lipo that i spliced into my controller with USB charging, it needed a larger plug to work, so I spliced on a spare plug from my spare connectors. works well with USB charging now!

I used this as a replacement battery in a set of headphones, and it plugged in and worked just fine. I have noticed that it gets hotter than the original battery when charging and doesn't last quite as long, but the difference is reasonable. The build quality seems good enough that I'm not worried about anything other than the potential lifespan of the battery. So far, it has performed almost on par with the original cell at around a quarter of the cost.

Battery arrived in paperboard box, plain and simple (no documentation/spec sheets etc). Applied some Kapton tape to insure a good insulation and reversed the polarity of the JST (Simple, but don't short it out!) to match requirements for the Wisblock board it would be powering for my Meshtastic node. Connected and powered on device at about 3.75v. Normal charge for LiPo cells is 4.2v so let it charge up to 4.2v via the onboard charger of the Wisblock, no issues, working just fine so far. The real question will be longevity and potential failures in the future. I'll update if I run into any problems but so far it's working just fine for me as an interim battery until I pickup some higher capacity ones.

Combined with a Teyleten Robot 18650 charger board, I was able to step up this Lithium Polymer battery up to 6V to replace 4 AA batteries.I have a fingerprint reader deadbolt that tends to burn through AA batteries very quickly, but otherwise, it works great. My solution was to convert the deadbolt to be solar powered.This battery has enough capacity to run the deadbolt for a few days but coupled with the battery charger and a USB solar panel, it can theoretically run for as long as this battery holds out.So far, my setup has worked perfectly for a few months now and I haven't had to worry about the deadbolt. I love this setup and this battery is the essential part of the whole thing.

This battery is the perfect size and dimensions for the LilyGO T-Deck Meshtastic device! Its compact size easily allows me to mount it in an enclosure, which is a great convenience. The battery connects seamlessly with the existing JST connector on the T-Deck and powers the radio for quite a while.I’ve been using this battery to run the Meshtastic, and it works flawlessly. The fit is snug and secure, ensuring that there are no loose connections or movement within the 3D printed enclosure. Additionally, the battery's capacity provides ample power, allowing for extended operation of the Meshtastic device without frequent recharging.

These LiPo cells are fairly generic these days. I am using this cell for a small electronics project. I *DO* like that it follows the normal standard - the RED lead is positive, BLACK is negative. Believe it or not, I have seen cells with this reversed. I have not run this battery all the way down and up, but from a short test, the capacity 1.2ah seems about right. I love batteries like this since you can get a higher - or lower capacity cell, that uses the same connector pinout and charger, depending on the power needs of your project. Of course lower capacity cells are smaller and a bit less money and vice-versa for larger capacity. I'd consider his battery to be medium sized, but of course that depends on what you are using it for!

I carefully snipped off the JST connector and spliced a barrel jack on so I could easily charge and test it.After letting it charge overnight, I plugged it into my handy dandy power meter. I gave it a 500 mA load and it had delivered the advertised 1200 mAh by the time it reached 3V. After removing the load, the voltage recovered to 3.4V.It's a rare product: it actually matches the description.