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HomeAircraftHelicopterHelicopter Main Discussion › Charging/Balancer question
04-24-2009 07:46 PM  9 years agoPost 1
splitboarder

rrApprentice

San Diego, California

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Im trying to charge a 3s1p 2150 mah 11.1 volt lipo with a TP-610 charger. I keep getting a message of #4 -overcharged cell in a pack

Should I discharge the pack and re-charge, or do I cut back the charge amps?

Im a noob at this problem and have read the book but still dont know where to go

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04-24-2009 08:01 PM  9 years agoPost 2
Sam2b

rrElite Veteran

Tacoma, WA

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Yes, discharge the pack using the "discharge" mode of this charger. Discharging to 3.7v is safe for this pack. Just be sure to balance this pack every time it is charged (as with any lipo pack).

_Sam B_

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04-24-2009 08:18 PM  9 years agoPost 3
TJinGuy

rrProfessor

Socorro, NM - USA

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Why would you want to discharge a pack in order to charge it? I mean if the pack is already run down then it is definitely not overcharged. Sounds to me like a settings problem or a connection problem.

- Chris

Team New Mexico
TJinTech

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04-24-2009 08:23 PM  9 years agoPost 4
ch-47c

rrElite Veteran

san jose, ca

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I'm new to lipo batteries, but the way I understand it, you want to balance all cells down to a known voltage so that they are all equal and then charge them up evenly to their rating so no cell is overcharged and allowed to overheat, puff, ot catch fire. A safety feature. NiCads could take the abuse that lipos can't by design. No?

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04-24-2009 08:33 PM  9 years agoPost 5
TJinGuy

rrProfessor

Socorro, NM - USA

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Balancing LiPos before charging is not useful unless there is a problem because they all charge at a different rate (slightly but it is different). The real point of balancing is to have the cells be balanced at full charge. Some chargers with balancers built in will balance the whole charge and others just at the end but the end result is the same, making sure the packs are at the same voltage at the end of the charge. That keeps things safe and gives you maximum performance from your battery.

- Chris

Team New Mexico
TJinTech

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04-24-2009 08:40 PM  9 years agoPost 6
ch-47c

rrElite Veteran

san jose, ca

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I balance my packs about every 5th charge except my 6s5000mah packs. I do those everytime, because they do go out of balance.

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04-24-2009 08:44 PM  9 years agoPost 7
splitboarder

rrApprentice

San Diego, California

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Well, even when I try to discharge, I get the same message " overcharged cell in a pack"

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04-24-2009 08:52 PM  9 years agoPost 8
ch-47c

rrElite Veteran

san jose, ca

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Sometimes my balancer TP 210 doesn't do it after one time and I have to rebalance the pack a second time before charging.

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04-24-2009 10:20 PM  9 years agoPost 9
Sam2b

rrElite Veteran

Tacoma, WA

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splitboarder,
well then fly the pack for one minute then charge.

_Sam B_

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04-25-2009 12:47 AM  9 years agoPost 10
Yug

rrMaster

UK. Herts

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could be a knackered cell

Vegetable rights and Peace

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04-25-2009 04:23 AM  9 years agoPost 11
ch-47c

rrElite Veteran

san jose, ca

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You know, after all the discussion Yug is right:
could be a knackered cell

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