06
2024
-
12
7.4V 8800mAh Special Equipment Low-Temperature Standby Battery Design Scheme
Author:
Special communication equipment is a type of electronic equipment that uses electromagnetic waves to detect targets. It emits electromagnetic waves to illuminate the target and receives its echo, thereby discovering the target and determining its position, direction of movement, speed, and other characteristics. Due to its special environmental requirements, the backup battery needs to provide continuous power supply under ultra-low temperature of -40℃.
Battery Parameters
Battery Specifications: LA18650-2S4P/8800mAh/7.4V
Battery Cell Model: LA18650/2200mAh/3.7V
Nominal Voltage: 7.4V
Nominal Capacity: 8800mAh
Battery Dimensions: 42*90*153mm
Battery Internal Resistance: ≤100mΩ
Battery Weight: 500g
Charging Conditions: 1.76 A × 6.5 hours (-20℃) / 4.4A × 2.5 hours (25℃)
Continuous Discharge Current: 1.76 A (-40℃) / 4.4A (25℃)
Protection Current: 6-8A
Charging Voltage: 8.4V
Discharge Cut-off Voltage: 5.0V
Service Life: Charge and discharge conditions 0.5C charge 1.0C discharge, when the remaining capacity is 80%, ≥500 cycles
Charging Temperature: 0～45℃
Discharging Temperature: -40～60℃
Storage Temperature: -40～45℃ (time limited)
Main Features
Discharge capacity retention rate at -40℃: 80% or more at 0.2C discharge, 60% or more at 0.5C discharge
Cycle life: 500 cycles or more
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06
2024-12
7.4V 8800mAh Special Equipment Low-Temperature Standby Battery Design Scheme
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