Duracell: Technical/OEM

OVERVIEW | TECHNICAL BULLETIN

TECHNICAL BULLETIN Cycle and Battery Life
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Cycle Life - General Information

Cycle life depends on a variety of conditions to which the battery has been exposed, including:
- Temperature during charge and discharge
- Charge and discharge current
- Depth of discharge
- Method of charge control
- Exposure to overcharging and overdischarging
- Storage conditions
Typically, under a C/5 charge/discharge at normal ambient temperatures, up to
500 cycles can be achieved with the battery delivering at least 80% of its rated capacity.
Repeated operation at extreme temperatures during charge and discharge will adversely affect the performance of the battery (see following figure).

Battery Life
The same factors that affect cycle life affect overall battery life. Operation or storage at extreme temperatures, overcharging, cell venting and abusive use will reduce battery life. Operation and storage of batteries at or about room temperature (20°C or 68°F) will maximize battery life. Recommended and permissible temperature limits are shown in the following table.

Recommended and permissible temperature limits for operation and storage of DURACELL Ni-MH rechargeable batteries.
	Recommended	Permissible
Low Rate Charge	15°C to 30°C (59°F to 86°F)	0°C to 45°C (32°F to 113°F)
Quick Charge	10°C to 30°C (50°F to 86°F)	10°C to 45°C (50°F to 113°F)
Fast Charge	10°C to 30°C (50°F to 86°F)	10°C to 45°C (50°F to 113°F)
Trickle Charge	10°C to 30°C (50°F to 86°F)	10°C to 35°C (50°F to 95°F)
Discharge	0°C to 40°C (32°F to 104°F)	-20°C to 50°C (-4°F to 122°F)
Storage, Short Term	10°C to 30°C (50°F to 86°F)	-20°C to 50°C (-4°F to 122°F)
Storage, Long Term	10°C to 30°C (50°F to 86°F)	-20°C to 35°C (-4°F to 95°F)