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Preliminary Specification

1.General:

Battery with safety circuit and wires

Cell: HPL804260 2400mAh 3.7V

PCM: Seiko IC is available

NTC: 10 kOhm or 100 kOhm (available)

Configuration: 1S1P

Weight: approx. 49g

2.Electrical Specification:

Rated Capacity: 2350 mAh min, 2400 mAh typical

Nominal Voltage: 3.7V

Watt-hour rating: 8.88 Wh

Charging Method: Constant Current + Constant Voltage

Max. Charge Voltage [V]: 4.20 (+/-50MV)

Max. Continuous Charge Current: 2400 mA

Rec. Charge cut off: by current 48mA or timer 2.5h

Max. Continuous Discharge Current: 2400 mA

Rec. Discharge cut off: 3.0V

Internal Impedance: tbd

Exp. Cycle Life: 400 cycles more than 80% of initial cap. (1C at 20 C)

Cell protection

Overcharge Detection: 4.35+/-0.025V

(0.5 to 1.5 sec. delay, resume 4.15+/0.05V or at discharging current)

Overdischarge Detection: 2.30+/0.05V

(0.1 to 0.2 sec. delay, resume 2.90+/0.1V)

Overcurrent Detection: 4.8 A to 1.6A (5 to 30msec. delay at discharge)

3.Ambient Conditions:

Temperature Range

-Charge:    0 to +45 C

-Discharge: -20 to 60 C

-Charge Retention/Storage[%]: 1 year at -20 to +25 C

                            3 month at -20 to +45 C

Humidity: 65+/20%RH

4.Environmental and Safety:

Please follow Hypercell Handling and Safety Precautions for Li ion and Li polymer

The cell is approved according UL 1642.

This battery meets the requirements of Battery Directives, and the battery parts are RoHS-Compliant.