charge rate
10-03-2005, 08:44 AM
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charge rate
New to all this and have a question.. I have a apache 2500 charger and kokam 640 mA 3 cell battery.. Everything I've read is not to charge over 1C.. The charger has a setting for 250mA and 700 mA.. Would it hurt it to charge the pack at 700mA since it is so close??
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10-04-2005, 07:58 PM
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RE: charge rate
There are really two answers to this question... Officially, the rule is never, ever, ever exceed the 1C charge rate, even by a little bit.
If you choose to follow the other answer, great care, even greater than you would normally take with LiPolys, must be taken. This goes both for charging AND discharging packs... Use this advice at your own risk.
As long as you don't discharge the pack too far, as in all the way down to 3.0V per cell, the battery pack will never see the full 700mA charge rate. During a LiPoly charge, the Apache gradually ramps down the charge current as the voltage of the pack reaches 4.2 Volts per cell. It only really sees the 700mA charge rate at the very beginning of the charge, and then only if the battery is completely discharged.
If you choose to follow the other answer, great care, even greater than you would normally take with LiPolys, must be taken. This goes both for charging AND discharging packs... Use this advice at your own risk.
As long as you don't discharge the pack too far, as in all the way down to 3.0V per cell, the battery pack will never see the full 700mA charge rate. During a LiPoly charge, the Apache gradually ramps down the charge current as the voltage of the pack reaches 4.2 Volts per cell. It only really sees the 700mA charge rate at the very beginning of the charge, and then only if the battery is completely discharged.
