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Eiremaxx
16-09-2013, 11:35 AM
Hi Guys Its been a while hope your all keeping well,

Quick question

I Have 2x reedy lipo 5000mah cells and was trying to charge them the other day but when i try to charge them it says low voltage i was using one of them every few months but the other was in storage i'm thinking these lipos are knackered but on the off chance is there a way to revive them?

Regards

Eoin

I,m planning to drop out for winter gp :woot:

Aire valley
16-09-2013, 11:52 AM
That message usually appears if the balance charge lead isn't connected correctly... Try disconnecting the battery and reconnecting again... That works for me..

MiCk B.
16-09-2013, 11:58 AM
Eoin,

Good to hear from you again.

It could be a number of issues.
But try first a normal charge, no balance leads.
Could just be a loose connection.

Next to check would be the voltage of the cells, if the pack as a whole reads over 6v then all it needs is a normal charge.

MiCk B. :-)

Eiremaxx
16-09-2013, 04:47 PM
Eoin,

Good to hear from you again.

It could be a number of issues.
But try first a normal charge, no balance leads.
Could just be a loose connection.

Next to check would be the voltage of the cells, if the pack as a whole reads over 6v then all it needs is a normal charge.

MiCk B. :-)

Hi Mick,

Thanks for the reply


Ok i've tested my saddle pack on the charger and power analizer and there ok,

There is no reading on the volt meter from both packs i checked it with charger with and without the balance cables on all charge options it keeps saying low voltage ,I'll try another meter on them but looks like there doomed :(

Regards

Eoin

Essexboyracer
16-09-2013, 06:15 PM
If you test with another multimeter and they say no voltage, then the're dead. If however they read say 5v or higher, you may be able to revive them.

I had a pack which dipped too low for a normal lipo charge, but I read that a couple of minutes on a NIMH charge could get their voltage back enough for a regular charge. I did that, and after their voltage had picked up a bit, I then did a normal LIPO balance charge. That pack worked fine afterwards. Care must be taken with this process, as if they get left on NIMH charge for a full charge, it would likely not go well.

So if they are only a bit low, feel free to try this advice. You can probably find a more detailed guide somewhere on the web.

EDIT: I think I followed the MaxAmps guys advice on this thread.

http://www.rctech.net/forum/maxamps-support-forum/223489-lipo-low-voltage.html

Eiremaxx
27-09-2013, 02:19 PM
If you test with another multimeter and they say no voltage, then the're dead. If however they read say 5v or higher, you may be able to revive them.

I had a pack which dipped too low for a normal lipo charge, but I read that a couple of minutes on a NIMH charge could get their voltage back enough for a regular charge. I did that, and after their voltage had picked up a bit, I then did a normal LIPO balance charge. That pack worked fine afterwards. Care must be taken with this process, as if they get left on NIMH charge for a full charge, it would likely not go well.

So if they are only a bit low, feel free to try this advice. You can probably find a more detailed guide somewhere on the web.

EDIT: I think I followed the MaxAmps guys advice on this thread.

http://www.rctech.net/forum/maxamps-support-forum/223489-lipo-low-voltage.html

Hi Guys thanks for the info,

I did that trick with the nimh charge and i got the lipos up over 6v and i was able to change again and they are reading full power now i did a few runs and they seem ok:thumbsup:

See you soon

Eoin