3s lipo ?

[Lowe's48]

I left my 3s lipo connected to the balancer overnight and now when I connect it the charger...it won't charge.Error massage came on!
Am I screwed ?? Its brand new too

[1rcmonster]

I left a 2s pack connected in my scaler once. Here is how I brought it back to life....

Set your charger to nimh setting and it's lowest charge rate

Watch the voltage meter on your charger until it reaches the minimum for the pack, 2s = 6v, 3s = 9v

Once it comes to that voltage and holds there for a bit stop charging

Reset your charger to lipo charge at about .5 amp

Keep an eye on the balancing and volts on your charger

After 20 minutes or so increase the charge to 1 amp

Slowly increase the charge rate, once the pack is charged then run it as if breaking in a new pack

I hope this help as it worked great for me. I thought I had destroyed a $70 pack but it has been going strong for more than a year now.

[Lowe's48]

Originally Posted by 1rcmonster

I left a 2s pack connected in my scaler once. Here is how I brought it back to life....

Set your charger to nimh setting and it's lowest charge rate

Watch the voltage meter on your charger until it reaches the minimum for the pack, 2s = 6v, 3s = 9v

Once it comes to that voltage and holds there for a bit stop charging

Reset your charger to lipo charge at about .5 amp

Keep an eye on the balancing and volts on your charger

After 20 minutes or so increase the charge to 1 amp

Slowly increase the charge rate, once the pack is charged then run it as if breaking in a new pack

I hope this help as it worked great for me. I thought I had destroyed a $70 pack but it has been going strong for more than a year now.

Thank you....thank you...thank you !
I'll try that tonight

[towtruckmikey]

Another way I learned after leaving a LiPo plugged in was to "jump" it.

If you have another with the same mah and c rating that is fully charged, you can make a jumper and connect the two together for 10 seconds. It will borrow power from the charged battery and bring it back to life. Worked for me

Be sure to wear gloves and safety glasses when doing this though, you never know about lipo's.

http://socalrcrc.org//threads/3576-L...ght=#post32814

Hope this helps.

[Lowe's48]

Originally Posted by towtruckmikey

Another way I learned after leaving a LiPo plugged in was to "jump" it.

If you have another with the same mah and c rating that is fully charged, you can make a jumper and connect the two together for 10 seconds. It will borrow power from the charged battery and bring it back to life. Worked for me

Be sure to wear gloves and safety glasses when doing this though, you never know about lipo's.

http://socalrcrc.org//threads/3576-L...ght=#post32814

Hope this helps.

Thanks but I have a dumb question? + to+ or + to- ?

[towtruckmikey]

Positive to positive, neg to neg, AND WEAR GLOVES my jumper got warm within the first 8 seconds. ( yes I timed it)

[Scottmisfits]

I would use the charger method. You don't need to worry about taking it off right at 3v/cell though. You can charge it up until it hit's the 4.2v/cell but it's still not a great idea. The voltage will settle a little bit though so I'd wait and take it off at 11 or 11.5v total for the pack. Then switch it over to a lipo charge. The lipo and the charger don't know what is plugged in until it hit's the 4.2v/cell. With a NiMh it will keep charging at that charge rate but the LiPo charge will drop amperage and just top off the capacity. So as long as you pull it off before it reaches full voltage, you're ok.

It is still not a very good practice to have to get into but it is something you can do.

[d.a.v.e]

Originally Posted by 1rcmonster

I left a 2s pack connected in my scaler once. Here is how I brought it back to life....

Set your charger to nimh setting and it's lowest charge rate

Watch the voltage meter on your charger until it reaches the minimum for the pack, 2s = 6v, 3s = 9v

Once it comes to that voltage and holds there for a bit stop charging

Reset your charger to lipo charge at about .5 amp

Keep an eye on the balancing and volts on your charger

After 20 minutes or so increase the charge to 1 amp

Slowly increase the charge rate, once the pack is charged then run it as if breaking in a new pack

I hope this help as it worked great for me. I thought I had destroyed a $70 pack but it has been going strong for more than a year now.

BE REALLY CAREFUL WITH THIS!!!

I ran my first lipo all the way down the first time I used it. It was a $140 pack and I tried the above method. It all appeared good. Got every thing charged, life looked good again. Lucky I put it in corning ware bowl that night in the garage away from everything and when I came out in the morning I had a stinky pile of ashes & a pretty miffed wife that lost a nice cooking bowl

Personally I would dispose of the pack, its not worth the risk!

[Lowe's48]

Thanks for the advice guys...you guys are scaring the crap out of me
I think I'll just get rid of it ....if I burn down the garage with my wife's Mustang GT and my 2011 F350 in it . She might be mad at me