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› Took 3 hours to balance a new zippy pack...is it ruined from factory?
12-31-2010 04:44 PM  7 years agoPost 1
Rogman88

rrElite Veteran

West Monroe, LA

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Background here. I had a turnigy 3000mah pack come from HC that took 7 hours to balance change on it's first charge and it only came up to 4.05v while the rest went to 4.2. I sent it back and got a new one 3 weeks later.

A couple of days ago I got a zippy 2650 pack and it took 3 hours on it's first charge to bring a cell up to 4.18 and the rest to 4.2. I had to change the lead to my turnigy leads because all my charge leads are turnigy 4mm bullets and the zippy was x60 or somethihng. I can't send it back now since I changed the lead The internal resistance is 8 and on par with the other cells that range from 6 to 8 as well. I'm wondering if now that it's been charged if further cycles will help that one cell catch up to the others in terms of speed when charging. Anyone else deal with this?

Thanks,

Roger

High Voltage just works better

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12-31-2010 07:32 PM  7 years agoPost 2
michael88997

rrElite Veteran

Lewisville,Tx

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I've had one like that, I did a slow just hovering discharge and it came back

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12-31-2010 07:42 PM  7 years agoPost 3
Hellsiege

rrVeteran

Colorado Springs, CO

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I've seen this before. Like above, left it a little low, hovered it so they we're all about equal then recharged. Happens now and again, but only seen it once in a new pack. Thought it was a sign cell was getting weak when it happened after use.

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12-31-2010 07:54 PM  7 years agoPost 4
TrevJonez

rrKey Veteran

St.George, Utah - USA

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i had a 6s 3000 turnigy 30c that did what your describing. i put 5-6 cycles on it and it didn't ever come back just continued to degrade.

but i did have a 2200mah 20c pack that had a low cell and after 2 cycles you would have never known there was an issue.

Who cares... its just money...

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12-31-2010 10:31 PM  7 years agoPost 5
Dr.Ben

rrMaster

Richmond, VA, USA

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I had a pack do that. It has been fine since the initial long charge.

Keep an eye on the cell. Note its voltage post flight.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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01-01-2011 05:47 AM  7 years agoPost 6
Rogman88

rrElite Veteran

West Monroe, LA

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Ok hovered the pack down to 3.8v while checking blade tracking and brought the pack back up on balance charge with no issues and only about 30 minutes to charge at 1C. Came up to 4.18 others were 4.19. I'll take it.

High Voltage just works better

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