EEMB Lithium Polymer Battery 3.7V 1800mAh 103450 Lipo Rechargeable Battery Pack with 2 Wires JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase

監視カメラの電源として利用しています。 充放電コントロールモジュールを使って、日中は太陽光パネルで充電し、その電力で監視カメラを動かしています。小型でかつ十分な容量があるため、この電池自体を充電することもなく、連続して運用できています。４箇所のハンダ付けとケースに格納するだけの簡単な作業で作成できたため、非常に満足しています。 欲を言えば、取り付けられているターミナルコネクタと対になるコネクタが付属していればと思います。

The product was packaged very well, but the battery only charges to about 80% (4.0V instead of 4.2V). I discharged it fully (about 3.5V as the BMS/safety mechanism kicks in) and then recharged it, but I still can't get above 4.0V. I can't return it because I had to solder a different connector before I could use it. I left 2 stars instead of 1 because the battery safety mechanism seems to work and because packaging was decent.

The battery works fine and the polarity is correct, as it seems some others have noted a polarity problem. The plug on this size battery does not appear to be standardized so my light would not accept it. So I had to cut the leads on the old plug and solder them to the new battery. It then works and fits fine. To be fair, it has a big warning on the description to check the shape and size of the plug you want. But I could not find another battery with a proper connector. So, if you don't do much soldering, be sure the plug will fit your project.

Gutes Produkt

Used to replace the swollen battery in my headlamp. It was the right voltage and current but the positive and negative were reversed in the plug. They were easily changed to the correct positions and then it plugged right in and works great.