Electrical Performance
Nominal Voltage and Operating Voltage: Nominal voltage 7.4V (two
3.7V 18650 cells in series), operating voltage range 6.0V-8.4V,
voltage decay is gradual in the later stages of discharge.
Capacity Characteristics: Rated capacity 2600mAh (at 0.2C discharge
rate), actual capacity is affected by discharge current, capacity
retention is approximately 90%-95% at 1C discharge rate.
Charging Parameters: Standard charging voltage 8.4V, recommended
charging current 0.2C-1C (520mA-2600mA), full charge time
approximately 1.5-5 hours (varies with charging rate).
Discharge Performance: Continuous discharge current is recommended
≤1C (2600mA), short-term peak discharge current can reach 2C
(5200mA), exceeding this will easily lead to overheating and
capacity decay.
Cycle life: Under standard charge and discharge conditions,
capacity retention is ≥80% after 500 cycles and ≥60% after 1000
cycles.
Internal resistance: The internal resistance of a single cell is
typically 20-40mΩ, and the total internal resistance of the battery
pack is ≤100mΩ (including connection resistance). Consistency in
internal resistance directly affects discharge balance.
Safety electrical thresholds: Overcharge protection voltage
8.7±0.05V, over-discharge protection voltage 5.5±0.1V.
Applications
Electric clippers: Provides sustained power, supporting continuous
work for extended periods, suitable for pet grooming, hairdressing.
Electric drill saw: Enhances motor output power by increasing
voltage (7.4V) through series design.
Audio equipment
Portable speakers: Stable 7.4V voltage ensures clear sound quality
and extends playback time.
Portable electronic products
Laptops: Some models use 7.4V lithium battery packs (e.g., 2S1P
combination) as the power module.
Portable Power Bank: High-capacity design supports charging
multiple devices.
Energy Storage System: Customizable as a solar/wind energy storage
unit, suitable for small-scale energy management.
Medical Devices: Such as portable monitors, requiring high security
and long battery life.
