Low Temperature Keeppower 18650 3500mAh Protected Li-ion Rechargeable Battery P1835LT for Arctic Expeditions & High-Altitude Instruments

●  Model: P1835LT ●  Nominal Capacity: 3500mAh ●  Minimum Capacity: 3360mAh ●  Nominal Voltage: 3.7V ●  Charging Method: CC-CV ●  Standard Charging Current: 1680mA ●  Standard Charging Time: 240min. ●  In Built Safety Circuitry ●  Protection Circuit (Against over charge, over discharge, over current and short-circuit.) ●  4.25V maximum voltage and 2.00V cut-off voltage ●  Over 500 charge-discharge cycles ●  Weight: 50.0g ●  Maximum Dimensions: (D)18.6*(L)69.2mm ●  Working Temperature Charge: 0 to 45° C Discharge: -40 to 60°C Storage: -20 to 25°C (1 year) -20 to 45°C (3 months) -20 to 60°C (1 month) ● Humidity range: 0 ~ 60% RH (non-condensing) * Excellent performance in low temperature, ≥70% capacity recovery rate even in -20° C * Excellent performance in high temperature, ≥95% capacity recovery rate even in 60° C Keeppower P1835LT maintains a remarkable 80% discharge capacity at -40°C. This makes them the ideal and reliable power supply choice for devices operating in extreme cold or sub-zero environments.