DC 3.7V 550mAh 502248 Rechargeable Lithium Polymer Battery Suitable for replacing built-in 2-wire batteries in 3.7-5V electronic devices and LED lights

This battery is suitable for replacing built-in 3.7-5V batteries with 2 wires and a capacity less than 2.035Wh 500mAh in 3.7-5V electronic devices ( Not suitable for high-power electric tools and model aircraft). Please compare the connector specifications and polarity according to the display diagram before purchasing,the red wire is the positive "+" and the black wire is the negative "-"，Do not reverse-charge or reverse-connectreverse. The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire. 502248 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 500mAh, power 2.035Wh, size 49×22×5mm(1.91×0.866×0.2inch）(L*W*T), Weight:10.72 g (0.38oz)，Maximum current:0.55A。 It can prevent overcharge, overdischarge, overcurrent, and short circuit. It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, 3302-26 high temperature resistant silicone cable, and genuine JST Pitch 1.25mm 2 wire connector module. If any quality issues arise within one year, please feel free to contact us sellers for a replacement.