Maximum working current: 50A Charging current: 40A (maximum) Continuous working current: 40A (maximum) Applicable battery: 3.7V nominal battery Overdischarge protection voltage: 2.6V<br><br>Overcharge protection voltage: 4.25V (with equalization) Temperature protection: discharge high temperature of 75℃; The charging temperature is -7℃. Wiring steps: (1) Capture of wires connected to each part of the battery to that of wires is effectively connected. that the individual potentials at the plug ends of of wires increase or decrease in sequence. The potential sequence is consistent with the potential sequence in the socket at of the protection board, and corresponds to each other one by one. (2) Weld the B- lead of the protection plate to the total negative electrode B- of the battery pack. that the solder joint is firm and reliable, with good electrical conductivity, and the alignment position is free from extrusion, friction and other possible hazards, and the alignment is smooth and short. Avoid solder, conductive objects or wires falling into, sticking to or contacting the inside of the protective plate. Note: the same charging and discharging port shares a negative C- and only one lead. The charging and discharging MOS appear in pairs, and the charging current of the same board is as large as the discharging current. Color: As Shown Material: Metal<br><br>Package Contents: 1 * Lithium battery protection board 1 * Acquisition cable<br><br>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.