Features: * Product name: lithium battery protection board * Model: HX-2S-D20 * Size: 46 * 20 * 3.6 mm * Upper limit of working current: 13A * Upper limit of instantaneous current: 20A * Quiescent current: less than 10uA * Resistance internal: less than 300m Omega;* Charging voltage: 8.4V-9V* Overcharge voltage range: 4.25-4.35v 0.05v* Over-discharge voltage range: 2.5-3.0v 0.05v* Working temperature: - 40 --- +50* Storage conditions: - 40-+80* Effective life: more than 50000 hours* Short circuit protection: can be protected and requires charging recovery* Color: as shown* Suitable for: massage battery, LED backup power, 12V electronic products, street lamp battery, monitoring emergency power supply, etc. * Quantity: 1 pc Welding point description: * B + battery anode; * B - connect the negative terminal of the battery; * MMB connect battery 1 to battery 2; * P + correct poles charging/discharging (sharing charging end/discharging end);* Negative terminal of charge/discharging terminal P (sharing charging end/discharging end). Package include: 1 Protection Board Notes: 1. Transition: 1cm=10mm=0.39 inch.2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.3. Please allow slight manual measurement deviation for the data.4. It cannot be used in lithium iron phosphate battery protection board, hernia lamp, hand-held electric drill, ChiZu electromechanical electric fish, electric bicycle batteries, car batteries, children (4A) more than 775 motor, 1w LED fisheye lamp, used for combined purchase of customers, please notice!