The YDL 103065 is a 2500mAh 3.7V rechargeable lithium polymer (LiPo) battery measuring 10 x 30 x 67 mm including the protection board and weighing about 39.9 g. It arrives with a built-in PCM protection circuit, 50 mm 26 AWG lead wires and a JST PH2.0 (PHR-2) 2-pin connector already fitted, so it can drop straight into your device. Typical applications Tablets, medical devices & industrial handhelds: Tablet Medical monitor Industrial handheld Portable printer Data logger Custom options The lead length and connector type can be changed to match your build. The capacity is fixed by the cell size, so if you need a different capacity tell us the space you have available and we will point you to the right model. Safety notes The red lead is positive (+) and the black lead is negative (-). Do not reverse the polarity, charge above 4.2 V, puncture the cell or expose it to open flame. Always charge with a constant-current / constant-voltage LiPo charger.