Product Information

I. Basic Parameters
Battery Model: LP2770112
Battery Type: Power Lithium-ion Battery
Nominal Capacity: 8.5Ah (Minimum Capacity: 8.5Ah)
Nominal Voltage: 3.2V
Charge Voltage: 3.65V
Internal Resistance: ≤1.5mΩ (Measured at AC 1kHz)
Weight: 370±10g

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

II. Charge & Discharge Parameters
Standard Charging Method: Constant current (1I₁=8.5A) first, then constant voltage (3.65V), terminate when the current drops to 425mA
Maximum Charging Current: Continuous 10I₁ (85A), 15I₁ (127.5A) within 30s, 20I₁ (170A) within 10s
Discharge Cut-off Voltage: 2.0V
Standard Discharge Current: 1I₁ (8.5A)
Maximum Discharge Current: Continuous 20I₁ (170A), 30I₁ (255A) within 30s

Charge & Discharge Cycle Life: ≥2000 cycles, residual capacity ≥80% of the nominal capacity

III. Temperature Parameters
Maximum Operating Temperature: Charging -10℃~45℃, Discharging -20℃~60℃
Optimum Operating Temperature: 15℃~35℃ for both charging and discharging
Storage Temperature: -40℃~45℃ for storage within 1 month; -20℃~35℃ (half-charged state) for storage within 6 months
High-temperature Performance (60±2℃): Capacity ≥95% of the nominal capacity

Low-temperature Performance (-20±2℃): Capacity ≥50% of the nominal capacity

IV. Safety & Other Parameters
State of Charge Retention: Capacity ≥90% of the nominal capacity after storage for 30 days at 25℃ / 7 days at 60℃
Hermeticity: Weight loss＜300mg
Safety Tests (short circuit, overcharge, overdischarge, nail penetration, extrusion, etc.): No ignition, no explosion (no leakage required for some test items)

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