Nominal capacity: 1020MAH, 1400-1600mAh, 800-900mAh, 20mAh The following brands: Optronic Qiangxin product type: medium rate charging current: product certification: CB shelf life: protection function: storage temperature with PTC protection: weight: charging voltage: range of use: household appliances, instruments and meters, consumer electronics, toy models, power energy storage product size: specification and model: BL5C, BL5B, BP-4L, smart charger, BL-4C battery type: lithium battery nominal voltage: 3.7V Whether imported or not: No