Filed under: FAQ by Jeff Servaas |
We sometimes get asked: “what is the best charge rate to use in my MH-C9000 for my batteries?”.
We recommend 0.5C as a standard charge rate. That is 0.5 multiplied by the battery capacity. Here is an example:
0.5C charge rate x 1000mAh battery capacity = 500mA charge rate.
If you are in a hurry, you can use a charge rate up to 1C without concern of damage, but at 0.5C charge rate you will get a more complete battery charge. A slower charge will result in a slightly higher capacity, and it is easier for the battery to absorb the energy at a slower rate, which will contribute to a longer battery life. So why not charge even slower and get more charge capacity and more battery cycles from the rechargeable batteries?
Using a slower charge rate has a diminishing marginal benefit. Going any slower than 0.5C does not result in much difference to energy capacity or battery longevity.Futhermore, we recommend a minimum charge rate of 0.3C. Below 0.3C it is more difficult for the MH-C9000 to detect the change in voltage and know when to terminate the charge.
As a guide, here is a chart for our main battery models:
||Minimum charge rate
||Recommended charge rate
||Maximum charge rate
|AAA IMEDION 800mAh
|AAA Powerex 1000mAh
|AA IMEDION 2100mAh
|AA Powerex 2700mAh
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