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Charging Methods
Recommended Charge Procedure:
- For fast charging and optimum performance, Duracell recommends a three-step procedure:
- Charge at 1C rate, terminated by using dT/dt = 1°C (1.8°F)/minute
- Apply a C/10 top-up charge, terminated by a timer after 1/2 hour charge (optional, not required)
- Apply a maintenance charge of indefinite duration at C/300 rate
- The recommended charge procedure should be used with a backup temperature cutoff of 60°C (140°F).
Alternate Charge Procedures Include:
- Low-rate charge (~12 hours): Charge at C/10 with a time-limited charge termination.
- Quick charge (~4 hours): Charge at C/3 with a -
 V
= 10 mV/cell.
- Fast charge (~1 hour): Charge at C/2 to 1C rate with either
-V,
or T
termination.
- Trickle charge: Constant charge at C/300 rate to maintain full charge.
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