Quote:
Originally Posted by Colin
We have not had any voltage problems with the new batteries, but have lost 6 batteries due to swelling this season. We believe that the swelling problem is due to our bank charger which we have now discontinued use with, prior to the swelling we had noticed that it was charging hot.
We did have a voltage problem in 2006. The battery in question read 13.5+ volts off the charger where it had been for an hour. But once the match started it failed to even move the robot and read something like 7 volts.
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Colin,
Can you give me manufacturer and model number or a link to the charger? Yes I am still working toget a handle on these issues and I need hard data on battery, charger used, approximate life span (#of matches).
For all, remember that these batteries have a specified life span of about 400 charge/discharge cycles. When high current in charge or discharge is used, then that life is severely decreased. Repeated 80% discharge can lower this to almost 200 cycles. This is also affected by charging a warm/hot battery.