Li-ion Battery BMS PCBA Charging Protection Circuit Board For Lomvum Zhipu Hongsong Jingmi 21V Lithium Ion Battery no For Makita DIY (semi-manufactured goods) Advance notification(Very Important): (1). To use this product, you need to have some professional knowledge and experience. We do not guarantee that you can use it well. (2). You must have 18650 POWER li-ion batteries and the tools such as spot welding machines, soldering irons, multimeters, and suitable chargers, etc. (3). This product has no after-sales service. After placing an order, it will not be returned! No refund! No after-sales! No refund! No return! Please purchase with caution! (4). The size and color in the picture are for reference only. The actual received goods shall prevail. If you raise any objections based on "color and size differences", please do not purchase! (5). The PCBA label may not be exactly the same as shown in the following picture and may change with the batch. Please do not mind! Do not purchase if you mind. PCB Specification: (1). High rate discharge: 30A (2). Maximum discharge current: Continuous 60A, pulse 195A (3). Discharge termination voltage: 13.75V (4). Overcharge protection voltage: single section 4.25v 0.025v (5). Overcharge protection recovery voltage: 4.1V 0.025v (5). Over discharge protection voltage: single section 2.7V 0.08v (7). Recovery voltage of over discharge protection: single section 3.0V 0.08v (8). Charging high temperature protection: 60 2 (9). Discharge overcurrent protection 1: 100A / 1s Delay protection (10). Discharge overcurrent protection 2: 180A / 100ms delay protection (11). Short circuit protection: 200A Package includes: As the following picture: no battery cell Kindly Reminder (Very Important!!! ): 1. There are no batteries in the package !!!!!! 2. If you need batteries, please don't place orders ! 3. If you don't have the knowledge of battery assembly, please don't place an order ! _x000D_