Experience reliable and efficient battery performance with our 502030 lithium polymer rechargeable battery. With a capacity of 200mAh and a charging voltage of 4.2V, it offers consistent power for your devices. This battery has a compact size (20 x 30 x 5mm) and light weight which makes it perfect for portable devices. Widely used in smart watches, balance bikes, drones, electric toothbrushes, handheld fans and more. It is packaged with protection function e.g. against overcharge, over-discharge, over-current and short circuit to its and your safety. Store at a temperature of 10C~45C for best results. Manufactured in China with high-quality materials for premium performance. Battery model: SL502030 Nominal voltage: 3.7V Nominal capacity: 1100MAH Charging voltage: 4.2V Discharge voltage: 2.75V-3.0V Charging current: Standard: 0.5C Maximum: 1C Charging temperature:: 0C-45C Discharge current: Standard: 0.5C Maximum: 1C Discharge temperature:20C-60C Protection functions: overcharge, over-discharge, over-current, short-circuit protection size:5 x 3 x 2cm Material: Metal colour: As shown Package Contents: 1 x lithium battery Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.