Product Information

I. Basic Parameters
Battery Model: LP2770112
Battery Type: Power Lithium-ion Battery
Nominal Capacity: 7.5Ah
Nominal Voltage: 3.2V
Charge Cut-off Voltage: 3.65V
Discharge Cut-off Voltage: 2.0V
Internal Resistance (AC 1kHz): ≤1.3mΩ
Weight: 392±10g

Dimensions (mm): Thickness 26.7-29.5 (swelling), Width 70.0±0.2, Length 111.7±0.5

II. Charge & Discharge Parameters
Standard Charging Method: Constant Current & Constant Voltage (CC/CV), charge at a constant current of 0.5I₁ (3.75A) up to 3.65V, then constant voltage charging until the current drops to 375mA and terminate charging.
Maximum Charging Current: Continuous 10I₁ (75A), 15I₁ (112.5A) within 10 seconds
Standard Discharging Current: 1I₁ (7.5A)

Maximum Discharging Current: Continuous 25I₁ (187.5A), 30I₁ (225A) within 30 seconds

III. Temperature Parameters
Charging Temperature Range: 0℃ ~ 45℃ (Optimal  15℃ ~ 35℃)
Discharging Temperature Range: -20℃ ~ 60℃ (Optimal  15℃ ~ 35℃)

Storage Temperature: -40℃ ~ 45℃ for storage within 1 month; -20℃ ~ 35℃ for storage within 6 months (State of Charge (SOC) shall be maintained at 30%~50% or voltage at 3.265V~3.310V)

IV. Performance Parameters
Cycle Life: Remaining capacity ≥ 80% of the nominal capacity after 2500 cycles
Charge Retention: Capacity ≥ 90% of the nominal capacity after storage at 25℃ for 30 days / storage at 60℃ for 7 days
High-temperature Performance (Discharge at 60±2℃): Capacity ≥ 95% of the nominal capacity
Low-temperature Performance (Discharge at -20±2℃): Capacity ≥ 50% of the nominal capacity

Discharge Capacity at 4I₁ (30A): ≥ 80% of the nominal capacity

V. Safety & Other Specifications
Safety Characteristics: No ignition or explosion occurs in short-circuit, overcharge, overdischarge, thermal chamber, nail penetration and drop tests (no electrolyte leakage is required for some test items).
Hermeticity: Weight loss ＜ 300mg before and after the charge retention test

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