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7.4V 8800mAh Low-temperature Backup Battery Design for Military radar

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7.4V 8800mAh Low-temperature Backup Battery Design for Military radar

October 16, 2020
Latest company case about 7.4V 8800mAh Low-temperature Backup Battery Design for Military radar

Military radar


It is a military electric device utilizing electromagnetic wave for exploration. The electromagnetic wave launched by radar irradiates the target and receives the echo. By this way can it discover the target and search the location, motor direction, running speed and other features. Given that it needs to meet the special requirements on military, it is necessary for the backup battery to provide constant power at -40℃ and satisfy the examination standard of combating and shooting.



application environment place ■indoor ■outdoor
operating temperature/humidity -40 ~ 70 ℃; 50 ~ 90 %RH
storage temperature/humidity -40 ~ 45 ℃; 50 ~ 70 %RH
special performance the requirements of charging and discharging under high-temperature & low-temperature

Charge at -20 ~ 50 ℃;

Discharge at -40 ~ 70 ℃

other requirements expiration date One year
explosive-proof grade /
waterproof grade IP67
dustproof grade /
dropping frequency /
application features operating voltage 5.0 ~ 8.4 V
capacity 8800 mAh
working hours 180 mins
dimension 42*90*153 mm
operating current 1-2A
maximum starting current 3 A,starting time 20 ms
maximum continuous operating current 1.5 A
frequency and time keep using (large current when collect signal and launch electromagnetic wave)
capacity management communication mode □SMBUS □I2C □HDQ
certification and environmental requirement of finished products types ■ GB31241-2014(CQC) □CE
□UL2054   □UL60950
□un38.3 □RCM
component verification □BIS
■ RoHS □battery directive
halogen-free other:
schematic design battery specification LA18650-2S4P/8800mAh/7.4V
cell model LA18650/2200mAh/3.7V
guard plate and hardware configuration IC S-8252AAD
MOS AO8814*2
other /
encapsulation mode □no protective circuit □PVC+ non-fundamental protection ■housing+ fundamental protection □housing+ non-fundamental protection
key parameter nominal voltage 7.4 V
nominal capacity 8800 mAh
dimension 42*90*153mm
internal resistance ≤ 100 m Ω
weight 500 g
charging condition 1.76 A× 6.5 hours(-20℃)/ 4.4 A× 2.5 hours(25℃)
continuous discharge current  
Contact Details
Unitech Energy System Limited

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