1. Product Overview
This type -40 °C low-temperature lithium battery, the core components of leading lithium-ion batteries, built-in multi-power protection solutions, the use of safe and reliable lithium packaging technology, in line with GJB4477-2002 standards.
2. The main technical indicators
2.1 Combination Mode: 4S5P (18650 Low Temperature Lithium Battery)
2.2 Nominal voltage: 14.8V
2.3 rated capacity: 10Ah
2.4 Charge Limit Voltage: 16.8V
2.5 Discharge cut-off voltage: 10V
2.6 maximum charging current: 0.5C
2.7 Maximum Discharge Current: 1C
2.8 Temperature Range:
2.8.1 Charging temperature: 10°C～+45°C
2.8.2 Discharge temperature: -40°C～+60°C
2.8.3 Storage temperature: -20°C to +45°C (≤1 year)
2.9 Low-temperature capacity: 4 hours at -40°C, 0.2C discharge capacity ≥ 60% of normal temperature
2.10 25°C cycle life: 0.5C cycle 400 times Capacity ≥ 80% of initial capacity
3. Product performance
3.1 The battery pack has good low temperature performance, product safety and reliability, and good stability;
3.2 The battery pack has waterproof, dustproof, anti-drop, anti-corrosion, radiation protection, anti-electromagnetic interference;
3.3 The battery pack has multiple protection functions such as over-charge protection, over-discharge protection, over-temperature protection, over-current protection, and short-circuit protection. The built-in BMS system can be built according to the customer's needs.
3.4 The battery pack has a small size, light weight, small self-discharge, long cycle life, high conversion efficiency, deep charge and discharge, long-term use and easy to carry.
4. Application area
Can be widely used in aerospace, radio communications, unmanned aerial vehicles, soldier carrying, armored vehicles, reinforced notebooks, radar front, airborne carrier, military weapons, and other military equipment.
5. Use precautions
5.1 It is forbidden to immerse the battery in seawater or water. When not in use, it should be placed in a cool and dry environment.
5.2 Exposure to sunlight, exposure to rain and snow is forbidden;
5.3 It is forbidden to use and leave the battery next to the hot and high temperature source, such as fire and heater;
5.4 Use a special charger for this type of battery pack when charging.
5.5 It is forbidden to use the battery to reverse the positive and negative electrodes.
5.6 Discard the battery to the fire or heater;
5.7 It is forbidden to use metal to directly connect the positive and negative electrodes of the battery to short circuit. It is forbidden to transport or store the battery together with metals such as hairpins and necklaces.
5.8 Disassembly is prohibited. Unauthorized removal of the battery pack may result in danger.
Low-temperature lithium battery and conventional lithium battery parameters comparison
Discharge voltage-time curves at different temperatures: a low temperature lithium battery, b. conventional lithium battery
Cycle life at 100% depth of Discharge
Figure 2. Full battery ZCV curve and total impedance during discharge - residual charge curve:
a. 0.2C ZCV curves for L1 system and L2 system at 25 ̊C;
b. 0.2C ZCV curve of L1 system and L2 system at -40 ̊C;
c. The impedance of 0.2% discharge of L1 system and L2 system at 25 ̊C changes with the residual charge state;
d. The impedance of 0.2% discharge of L1 system and L2 system at -40 ̊C with the curve of residual charge state;
♣ Wide Range Temperature Adaptability
♣ Long Life Cycles - 1C more than 2000 times
♣ High Power Output
♣ Environment Friendly