Go Back   Steve's Digicams Forums > Digicam Help > Batteries or Power Packs

Thread Tools Search this Thread
Old Jun 9, 2006, 1:02 PM   #1
Junior Member
Join Date: Jun 2006
Posts: 1

I boo-booed and left my Maha C-777 Plus in Li-Ion mode when I plugged my 7.2v NiMH (or possibly NiCad) battery pack into it.

Quite surprised to come back the next morning to find the battery still charging. The Maha display, if I recall correctly, showed ~7700 mA over 580 minutes of charging. I *believe* this is a 4000mAh battery pack. The battery was very warm but not hot, and the Maha temp detector didn't shut down charging. Still reasonably within the 1.5C charging range, although it was probably 1/2 to 3/4 depleted at the time of recharging.

I performed a discharge, and the Maha showed the battery only output 3300 mA over the complete cycle.

I then recharged the battery (using the correct Ni mode this time), and two problems: The final charging voltage was 6.6v (instead of 7.2), and the first charge only put ~2800 mA into the battery -- about half of whats expected.

I let the battery sit, then charged it again (another ~1200 mA) and again (~900mA). However, final charging voltage is still stepped down to 6.6v.

Looking for advice on how to recondition this battery, or if I've killed it and need to build another. I appreciate your input!
speede541 is offline   Reply With Quote
Sponsored Links

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 10:03 PM.