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Old 01-09-2010, 10:41 AM   #1
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Default mAh of Lipo Batteries

Hi All,

I have cycled over the past year different brand of lipo's to a cutoff of 6v on a turbo 35 gfx, and none of them seem to ever give what the label says, 5300's give 5100, 4200's give 3950, and 4012, some 5000's give 4670 etc. None give exactly what the label says. Even with nimh i had 4600's give 4250, 4300 etc. I'm just wondering if others have noticed this?

Thanks Ya`All
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Old 01-09-2010, 11:17 AM   #2
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I think with the lipo's you are just putting back in them what they have lost since last charge. They don't discharge nearly as bad as Nimhs did. Plus when charging nimhs the GFX was just telling you what it put in the packs, not that it was necessarily what the pack took.
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Old 01-09-2010, 11:46 AM   #3
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Thanks,

However the numbers above are all based on disharge. I would fully charge the pack and discharge down to 6v and those are the numbers i got, it was always about 300-350mah less than what the pack was suppose to be rated at.
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Old 01-09-2010, 11:47 AM   #4
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I've never run across a battery nicd/nimh/lipo that cycled out to as much or more than the label, except for the first couple of cycles.

Then normal degradation sets in due to heat, cold, high amp charging/discharging, packs mismatched due to drifting cells, general abuse.

Plus, so many chargers are off by a fair bit so they peak early and cutoff early.

and what I've seen from battery manufacturers, they discharge at loads like 1 amp or 1c to come up with their ratings, we pound the crap out of them.

It sounds like you treat your packs well, to get what you get out of them, that's something at least.
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Old 01-09-2010, 12:15 PM   #5
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Hi I have the opposite on LiPo's we buy 5000 35C rated packs from Shen Zhen, they regularly charge to 5200 to 5400, maybe it's just the 'major' brands penny pinching and overstating less superior cells?

Just my Tuppence.
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Old 01-09-2010, 12:32 PM   #6
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The capacity rating of the battery is the total capacity not just the capacity down to 6v. Discharging down to the 6v cut off is always going to give you a smaller number then the capacity rating because there is still 6v in the pack. Don't discharge down to 0v to find out though...just be happy it's close at 6v.
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Old 01-09-2010, 01:00 PM   #7
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Quote:
Originally Posted by cherry2blost View Post
Hi I have the opposite on LiPo's we buy 5000 35C rated packs from Shen Zhen, they regularly charge to 5200 to 5400, maybe it's just the 'major' brands penny pinching and overstating less superior cells?

Just my Tuppence.
That would be Shen Zhen's fault for putting the wrong label on. if you really went over the mah, your lipo would explode
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Old 01-09-2010, 01:47 PM   #8
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Quote:
Originally Posted by TC4Racer123 View Post
That would be Shen Zhen's fault for putting the wrong label on. if you really went over the mah, your lipo would explode
Even so lol it's nice to get MORE than you paid for!!!
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