Over voltage range: 4.25-4.35v0.05v Over discharge voltage range: 2.3-3.0v0.05v Maximum operating current: 0-25A Maximum transient current: 34-40A Quiescent current: less than 30uA Internal resistance: less than 100mohm Working temperature: -40---+50 Storage condition: -40-- +80 Effective life: more than30000h Short circuit protection: Yes, delayed self recovery Precautions: Strictly according to the diagram wiring: 0V(B-)3.7V(B1)7.4V(B2)11.1V(B+), Do not deliberately short circuit. After is connected, Need to charge first, then have output. When the battery is connected in series with 3 groups, Please that the voltage of each battery is the same. If not same, please fill in each batteries and then use. Do not mix the good battery and the battery. The capacity of the battery internal resistance is closer will be better. Attention: Do not mix the good battery and poor battery to use. The internal resistance of 3 battery capacity are closer will be better. Please know the professional knowledge of this module before buying Note: Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully. Colour:As Shown Material:plastic Size:5.6 x 4.5cm Package Contents: 2 x Protection Board 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.