MaxAmps Battery Problem

[John Galbreath Jr.]

I tried posting on the MaxAmps Board, but do not have permissions to post a new thread.

I purchased two 3S LIPO batteries from MaxAmps. One has worked flawless. The newest one I purchased gave me an error that voltage was too low when trying to charge. I contacted maxAmps, as I purchased the 300 cycle warranty, and I sent the battery back for repair. They returned the battery back repaired, but the return invoice stated it no longer had a warranty . I "stored" the battery, used it once. Now, when I go to charge or store, I get the same error that the voltage is too low.

Has anyone repaired one on these on your own? I was wondering if I could charge the low cell(s) individually up to a level that my charger can take over. Right now, it just errors out, and does not attempt to charge.

I really don't understand why I have no warranty any more, as the old battery lasted about 15 cycles, and after repair, one more cycle. But, I will show my displeasure by taking my business elsewhere.

[Reflection]

As far as the low voltage deal, I've run my lipos below cut off a few times. I've switched my charger to NiMH and charged the pack just for a few seconds to bump the voltage back up above 3V per cell. Then switch the charger back to lipo and the correct settings for that pack, hooked the balance tap up and let it charge. Never had an issue.

[skid plate]

Here is another idea, though I would not recomend trying this with a severly damaged battery.

Use a deans parallel plug, available at the hobby store, and jump the bad battery with a charged good one for about 3 to 5 seconds. This should be more than enough to raise it above the minimum level to charge it on lipo settings.


JC

[Sharkey]

the reason they cut your warrenty is because the cell was under voltage when it got back to them. now was the pack like that when you first bought it from them??? if so, id make a big deal over it. if you have run it and it was fine for a few times and this keeps happening, check your voltage cutoff settings, maybe try upping them to 3.2v if you can. other things to consider, are you balance charging the packs??? what charger are you using??? how are ytou storing the packs???

[John Galbreath Jr.]

Originally Posted by Sharkey

the reason they cut your warrenty is because the cell was under voltage when it got back to them. now was the pack like that when you first bought it from them??? if so, id make a big deal over it. if you have run it and it was fine for a few times and this keeps happening, check your voltage cutoff settings, maybe try upping them to 3.2v if you can. other things to consider, are you balance charging the packs??? what charger are you using??? how are ytou storing the packs???

Before I sent it back under warranty, they had me check the voltage, so they knew it was low before I returned it. It worked properly for about 15 cycles, so I assume it came to me with the correct voltage when new. My voltage cutoff setting through CastleLink is 6.0 volts. Yes, I am balancing the packs using a Hyperion EOS060Si AC/DC charger. I am using the store feature on the Hyperion after running. Letting them sit till I run the car again. Charge batteries and go play.

[Reflection]

Originally Posted by John Galbreath Jr.

I purchased two 3S LIPO batteries from MaxAmps.
.

Originally Posted by John Galbreath Jr.

My voltage cutoff setting through CastleLink is 6.0 volts.

3 cell cut off should be set at 9v.

[stevew]

I put mine in the freezer until it was able to be charged again and it never had a problem after