Forget to disconnect Li-Po battery from the ESC
04-16-2013 | 11:00 AM
#1
Thread Starter
Tech Rookie
Joined: Apr 2013
Posts: 6
Forget to disconnect Li-Po battery from the ESC
Hi guys,
This is my first thread so I'd like to share what happen with me today...
Today I decided to charge my HPI Savage Flux Batteries, so I went to the car to take the batteries out of the truck as I always keep them in disconnected from the ESC after playing.
I discovered today that I didn't disconnect the batteries from the ESC since last time and it has been connected for a week or two approximately.
The packs looks fine, there is no bubbles or any increase in the size. I'm using ( UB Power Li-Po Battery, 5200 mAh, 11.1V 3S Cont. 30C/Burst 60C )
So I decided to charge them... I'm using the Q6AC QuadPlay AC/DC Multi-charger. I've prepared my Li-Po Guard bags and connect the batteries to the charger, set the charger on "balance" and start it, after starting it right away an alarm tone was ringing and a notification message showed on the screen telling " Low Voltage Battery ".
I believe the Packs are dead now,,,,
If you have any information regarding my issue please feel free to reply to share our experience.
This is my first thread so I'd like to share what happen with me today...
Today I decided to charge my HPI Savage Flux Batteries, so I went to the car to take the batteries out of the truck as I always keep them in disconnected from the ESC after playing.
I discovered today that I didn't disconnect the batteries from the ESC since last time and it has been connected for a week or two approximately.
The packs looks fine, there is no bubbles or any increase in the size. I'm using ( UB Power Li-Po Battery, 5200 mAh, 11.1V 3S Cont. 30C/Burst 60C )
So I decided to charge them... I'm using the Q6AC QuadPlay AC/DC Multi-charger. I've prepared my Li-Po Guard bags and connect the batteries to the charger, set the charger on "balance" and start it, after starting it right away an alarm tone was ringing and a notification message showed on the screen telling " Low Voltage Battery ".
I believe the Packs are dead now,,,,
If you have any information regarding my issue please feel free to reply to share our experience.
Last edited by Q8kwtQ8; 04-16-2013 at 12:26 PM. Reason: Spelling mistake
04-16-2013 | 11:29 AM
#2
if you have an external balancer you can check the individual cells for voltage.
**Proceed at your own risk for the next part**
From there set your charger to Nimh mode and charge at 1 amp until it gets back to nominal voltage (3.7 per cell)
From there balance charge at 1 amp using Lipo mode.
I have done the same thing on 2 of my batteries and while its not recommended for longevity it will let you keep using the battery.
**Proceed at your own risk for the next part**
From there set your charger to Nimh mode and charge at 1 amp until it gets back to nominal voltage (3.7 per cell)
From there balance charge at 1 amp using Lipo mode.
I have done the same thing on 2 of my batteries and while its not recommended for longevity it will let you keep using the battery.
04-16-2013 | 11:37 AM
#3
Tech Adept
Joined: Jan 2013
Posts: 104
You could try to charge them in Nimh mode, with a low current like 0.5A or 1.0A for a short moment to raise the cells voltage, let's say 8 or 9volts, and then stop and switch to Lipo balance mode.
If cells have gone too low they shall be really damaged, be careful and always keep an eye on them during charge.
Also check them while running your car, if you succeded in charging them.
If cells have gone too low they shall be really damaged, be careful and always keep an eye on them during charge.
Also check them while running your car, if you succeded in charging them.
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