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11.1 Lipo


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#1 Futurefrog

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Posted 22 May 2011 - 05:44 AM

I dont know where to put this.  

I bought my lipo somewhere in late march and a chager with it. i was shooting my lipo and it slowed down so i put it on  the chager. My chager said 11.1 volts chaged when i took it outside to see if this wass right 3 rounds later it was dead. and my chager still says 11.1 volts.     i brought both from pro shop thats why i put it here. and plz advis becuse i will pissed if i just lost 110 dollars because of faltly chaging and screwed up battery

#2 xKingSizex

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Posted 22 May 2011 - 11:28 AM

A fully charged lipo will be around 12.3 volts or so.  What was each cell reading on the charger and have you tried another battery in the gun to make sure it's the battery and not the gun?

#3 Futurefrog

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Posted 22 May 2011 - 01:31 PM

yes i have my chager still says 11.1 and battery is still dead . i tried a 9.6 and it worked fine

#4 Futurefrog

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Posted 22 May 2011 - 01:38 PM

the cell reading was 4.42, 3.71, 3.54

#5 RexRocker AEG Dr

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Posted 22 May 2011 - 01:45 PM

What battery do you have?  LiPo batteries can have bad reactions for a number of reasons, not only because of the charger.  The battery could be physically damaged for one.  How did you determine when to charge the battery and did is ever drop below 9 volts?  If it did, it can be permanently damaged.  Also, have you changed the plug on the battery to Deans or have you had and shorts in the circuit (blown fuses?  A short circuit in the system or inappropriately installed connectors can cause the battery to be damaged too.

I once had a LiPo battery that I inadvertently shorted when I installed Deans.  The battery would appear to be fully charged but it would not deliver current.  

Just some thoughts.

#6 xKingSizex

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Posted 22 May 2011 - 01:59 PM

You need to properly balance the battery, it's way out of whack. It's not fully charged either. Each cell should be at 4.2 volts. Do you have a charger that balances the battery? If you don't have a balance charger, you can ruin the battery.

#7 gcw360

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Posted 22 May 2011 - 02:00 PM

View PostFuturefrog, on 22 May 2011 - 01:38 PM, said:

the cell reading was 4.42, 3.71, 3.54

Well, one problem is that the cells should never exceed 4.2V (x3) for a max total of 12.6V.   I'm guessing that cell with 4.42 is damaged and therefore not allowing current flow.

#8 Futurefrog

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Posted 22 May 2011 - 02:08 PM

for the first few suggoions . im not that skilled to install deans

and what should i do. i have a kong power 11.1

#9 RexRocker AEG Dr

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Posted 22 May 2011 - 02:19 PM

The reason I asked about Deans is that I've seen times when people cut the red and black wires at the same time to remove the old tamiya plug.  This causes a short and the battery is essentially ruined. If you haven't done that you can rule it out as a cause of your issue.




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