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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › low cell on 4000mah 12s lipo
05-09-2015 02:05 PM  6 years ago
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tomtek

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ga

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low cell on 4000mah 12s lipo
My charger is the I-charger 208b. My lipo is a 12s 5000mah. Lately when I balance charge the lipo cells 1 thru 5 are 4.20 and cell 6 is 4.10. When I storage charge the lipo cells 1 thru 5 are 3.85 and cell six is 3.75. Any opinions?
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05-09-2015 02:57 PM  6 years ago
Pistol Pete

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Seffner, FL

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Chances are bad cell or going bad.

Your charger has the internal resistance measurement feature. Check that screeen out and compare to the rest of the cells.

There should be all the same or withing one number from the others.
~~Enjoying the hobby one flight at a time~~
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05-09-2015 03:50 PM  6 years ago
Dr.Ben

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Richmond, VA, USA

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Do that and make sure to charge each 6S pack individually until you see what is going on. Remember parallel charging becomes risky if there is a low cell because the charger will try to overcharge the other cell in the set to get the voltage up to 4.2V. You can't see it until you pull the packs off charge and read individual cell voltages.

Ben Minor
Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA
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05-09-2015 04:05 PM  6 years ago
tomtek

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ga

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Thank you for the reply. Can you tell me the procedure for checking IR on the 208b
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05-09-2015 05:44 PM  6 years ago
wc_wickedclown (RIP)

rrProfessor

long beach calif

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i use the astro blinky balancer to fix out of balance lipos it really works

Watch at YouTube

Watch at YouTube

Insha Allah made in america
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05-10-2015 01:28 AM  6 years ago
nappyroots2182

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Moline, il

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discharge on your charger very slow and charge very slow to see if you can even it out abit. sometimes charging too fast the charger cant keep up with balancing at the same time. i always charge as slow as i have time for
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