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Want more runtime between charges?
We have NiMH UPGRADE options for your NiCd battery! 

Will your charger work with an upgraded NiMH replacement?
While it's permissible to use a NiCd charger, you should not leave these batteries on the charger for extended periods of time. They should be removed as soon as the indicator light shows "charged". The reason behind this is that the "Trickle Charge" rate of that specific charger is designed for NiCd batteries, so it's a hair too steep for NiMH. If these packs were left on the charger for extended periods of time (overnight to several days), the high trickle charge rate could overcharge the batteries and would essentially "bleed" off capacity. That leads to accelerated wear on the cell chemistry and decreased cycle life. On a side note, even NiCd batteries should not be left on the charger for extended periods of time. That inevitably leads to "memory effect" and decreased lifespan of the pack. 

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