Is my Li-Po stuffed?

[Greg1971]

I have a new Flight power EVO-RX 3000mAh 2s2p 7.4V Li-Po. I've accidently left it connected to my voltage regulator which has a voltage level indicator light. This light has been draining power from the battery over a couple of weeks. After trying to recharge it on my e-station BC6-10 I get the following message. "Battery check.....low voltage". How do I trickle charge it on this charger, or have I just ruined a brand new battery? :oops:

[RC Accessory]

I have a new Flight power EVO-RX 3000mAh 2s2p 7.4V Li-Po. I've accidently left it connected to my voltage regulator which has a voltage level indicator light. This light has been draining power from the battery over a couple of weeks. After trying to recharge it on my e-station BC6-10 I get the following message. "Battery check.....low voltage". How do I trickle charge it on this charger, or have I just ruined a brand new battery? :oops:

The battery may not be ruined. Here is what you do.

Set the charger to Nicad and set the charge rate .1 or 100 mah. Charge as a Nicad until the voltage of the pack reaches 6.04 V. Stop the charge and reset the charger to Lipo Balance charge.

You need to watch the battery very carefully. I have seen this work many times, but I have also seen the battery get warm. When it gets warm the voltage is not increasing.

This can be dangerous so be careful and watch what is happening. Do it outside in an open area.

Evan

[Greg1971]

Thanks for the info.
I've got the Li-Po fully recharged. Did'nt overheat or puff while charging. I will keep an eye on it before flying.

[ChristopheB]

Hi

How many times this take ? for a 3S1P 2200mA as exemple ;)
how to be sure, that this will not overcharge 1 cell ?

thanks you

[RC Accessory]

Hi

How many times this take ? for a 3S1P 2200mA as exemple ;)
how to be sure, that this will not overcharge 1 cell ?

thanks you

I am not sure I understand your question.

[ChristopheB]

I try to do the same thing with my lipo a Aplus 3S1P 2200mAh
I charger is set to NiCd with 0.1A and run since yesterday... but not during this night.
I'm still below 8.5V.
That's why I ask to know how many time it take to save a lipo.

edit : and I try in lipo mode on the charger but it says that the balance is not connected, and it's connected

[RC Accessory]

I try to do the same thing with my lipo a Aplus 3S1P 2200mAh
I charger is set to NiCd with 0.1A and run since yesterday... but not during this night.
I'm still below 8.5V.
That's why I ask to know how many time it take to save a lipo.

edit : and I try in lipo mode on the charger but it says that the balance is not connected, and it's connected

Must be over 3.0V per cell. Time is not the issue.

[ChristopheB]

I've use my multimeter on the balance cable, and one cell is at 0V !!!
the 2 others are at 3.98V
So 1 cell is dead, but how it could be really at 0V and not at something different than 0 ?

Can it be from a bad wirering ?
I have never used this lipo and have it since 4 months


thank you

[RC Accessory]

Your battery is dead.