503040 3.7V 550mAh Lithium Pouch Battery


UL listed factory direct production.

Lithium-ion battery protection: short circuit protection, overcharge protection, over-discharge protection, over-current protection, etc.

Product number: HLC503040
Cell model:503040/3.7V/550mAh
Battery specification: 503040-1S1P/3.7V/550mAh(pouch battery)
Nominal voltage:3.7V
Nominal capacity:550mAh
Charging voltage: 4.2V
Charging current: ≤550mA
Discharging current: ≤550mA
Instant discharging current: 550mA
End-off voltage: 3V
Internal resistance: ≤70mΩ
Battery weight: 11g
Product dimension: 5*30*40mm
Charging temperature:0~45℃
Discharging temperature: -20~60℃
Storage temperature: -20~45℃
Battery case: Aluminum plastic pouch cell
Application field: Bluetooth Earphone

Battery Features:

  • The specific energy is large. The actual specific energy that can be achieved at present is 100-115Wh/kg and 240-253Wh/L
  • The cycle life is long, generally up to 500 times or even 1000 times.
  • Good safety performance, no pollution, no memory effect. As the predecessor of Li-ion, the lithium battery is prone to short circuit of dendrites due to metal lithium, which reduces its application fields: Li-ion does not contain cadmium, lead, mercury and other elements that pollute the environment.
  • The self-discharge is small, and the self-discharge rate of Li-ion fully charged at room temperature for one year is about 10%
Weight 11 g
Dimensions 4 × 3 × 0.5 cm
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Battery Cell



Bluetooth Earphone