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batteries not fully charging?

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Old 02-01-2005, 06:45 PM
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Default batteries not fully charging?

well once again im having problems. I have two brand new zapped/matched 3300 nimh 6 cell packs, i use a superbrain 969 pro charging at 4.5 amps...the best the packs do is around 3100mah. What might i be doing wrong here?
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Old 02-01-2005, 07:02 PM
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Hi,

That's pretty bad, but I have some questions.

Are you fully discharging and equalizing the cells before charging?

What cut off method are you using and how are you setting it up?

When the batteries are charged do they feel warm?

Chris.
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Old 02-01-2005, 07:34 PM
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i put them on an equalizer tray and the lights did not come on at all, so i tried to discharge and nothing there either, i even tried the discharge cycle on the charger and it stopped immediantly. Yes the packs are warm, could it be this piece of shit charger i got?
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Old 02-01-2005, 08:08 PM
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Something sounds wrong. I'd suggest you get a friend to cycle your cells for you to see what he gets into them, pick someone with a good charger. This is just to make sure the cells are good. I'm assuming that as the cells get warm (not too warm though) that they are getting a full charge. It may be that your charger is badly calibrated and it's actually getting a full charge but it just doesn't look like it by the numbers on the cells. I have no idea how good the superbrain is but you should be getting around 4000 and even 4500 on a really good set. Be aware though that this is not what you will get out.
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Old 02-01-2005, 08:11 PM
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That's interesting, is it possible to over charge NiMh?
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Old 02-01-2005, 08:16 PM
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3100 mili amps is just what the charger put into the cells, its not how much is in the cells
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Old 02-01-2005, 08:17 PM
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what did your cells peak out at when you first charged them up?
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Old 02-01-2005, 11:28 PM
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check to see if your mah setting is 3300
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