Working humidity -20 +70 ℃ Normal working temperature range Storage temperature -40+85 ℃ Humidity<90%, No condensation Protection board sizeMAX: 160*105*20mm L*W*H Rated discharge current: 250A Charger voltage(CC-CV) lifepo4: Battery series *3.6V Charger voltage(CC-CV) Li-ion: Battery series *4.2 V Charging protection Over-charge protection voltage lifepo4: 3.750V±0.05V Over-charge protection voltage li-ion: 4.250V ±0.05V Over-charge protection delay time: 500~2000Ms ±0.05V Over-charge protection recovery voltage lifepo4: 3.600V ±0.05V Over-charge protection recovery voltage li-ion: 4.150V ±0.05V Discharge protection Over-discharge protection voltage lifepo4: 2.200V±0.1V Over-discharge protection voltage li-ion: 2.700V±0.1V Over-discharge protection voltage delay time: 4000~6000mS Over-discharge protection recovery voltage lifepo4: 3.000V±0.1V Over-discharge protection recovery voltage li-ion 2.700V±0.1V Discharge overcurrent protection current value: 3 times of working current Discharge overcurrent protection delay time: 100-400mS Discharge overcurrent protection recovery condition : Disconnect the load or Charging activation Short circuit protection Short circuit protection triggering condition: External load short circuit Short circuit protection delay time: 100-400uS Short circuit protection recovery condition: Disconnect the load or Charging activation Balanced function Balanced turn-on voltage li-ion: ≥4.18V Balanced turn-on voltage lifepo4: ≥3.50V Balanced current: 120-180mA Self-consuming Operating mode: ＜80 uA Sleep mode ＜80 uA