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Old Jan 27, 2013, 08:49 AM
Whatever goes up must go BOOM
joker24458's Avatar
United States, OH, Kent
Joined Mar 2012
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Zippy Compact 500mAh 3S batt charging problem

Hi all, I recently purchased a Zippy Compact 500mAh 3S LiPo battery from Hobbyking. I have charged almost all of my batteries with my Accucel 6 without a problem for the past year. But, when I try to charge this batt, it goes into the charging stage for about two seconds, then it starts to beep and the screen says "INPUT VOL ERR" which I assume it means "input volume error". Well, the battery volume I "inputed" at the beginning was 5.0A 11.1V (3S). The way I understand it, 500mAh equals 5.0A, right? Like with my 350mAh 2s, I charge it as 3.5A 7.4V (2S) and it does that without a problem. So, what am I doing wrong, or is there something wrong with the battery? Thanks.

-joker
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Old Jan 27, 2013, 09:05 AM
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tacx's Avatar
United States, MI, Macomb
Joined Apr 2009
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A couple things.

First..."Input Vol Error" means Voltage not volume. It is telling you that your voltage to the charger is to high or to low. Check your power supply output voltage. It needs to be between 11 and 17 volts.

Second...You should be charging at a rate of 0.5 amps (thats 1/2 amp.) NOT 5.0.

Third... The Accucell 6 is only good for 5 amps max charging. This could also be the problem.

Try charging your batt at 0.5 amps
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Old Jan 27, 2013, 09:14 AM
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United States, KS, Arkansas City
Joined Oct 2012
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I am thinking that you have a power in problem.... as in your input voltage is tooo low to the charger. But I see another issue! if you charge a 500mah battery at 5.0 amps that is a 10c charge rate !!!!!!!!!!!!!! really hot...... I think most ppl i know that use lipos charge at 1c up to 4c so a 500 mah pack at 1c would be .5 amps..... at 4c would be 2amps. I start out slow with a new pack then work up to a faster charge once it has a handfull of cycles, but i have friends that just go full throttle too........up to you.
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Old Jan 27, 2013, 09:19 AM
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United States, NC, Lexington
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MAH stands for milli amp hours so 1000mah would equal 1 amp. As tacx said, 500mah would be .5 amps on your charger which would be a 1c charge rate. A 1c charge rate is what most agree is best for the battery on the first few charges. You should double check but the Zippy Compacts are capable of a 5c charge rate. I charge mine at 3c which for a 500mah battery would be 1.5 amps on the charger. This setting typically takes 15 to 20 minutes to fully charge.

I would strongly suggest that you do a little research so you fully understand lipo batteries as overcharging (charging at too high of a rate) can cause a lipo fire which is really bad news. When used correctly lipo's can be very safe but making mistakes can be catastrophic.
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Old Jan 27, 2013, 09:45 AM
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United States, OH, Kent
Joined Mar 2012
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Ok, thanks ALOT guys, I was really confused before. Now I am not. My power supply is 12volts. I will try charging the battery at 1.5amps as ForsheeMS suggested. Thanks.

-joker
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Old Jan 27, 2013, 11:28 AM
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United States, OH, Kent
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Ok, it worked, but unfortunately I couldnt fly because of the wiind that just picked up. Oh well, thanks guys.

-joker
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Old Jan 27, 2013, 03:42 PM
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Never rush a good thing.

Patience is a virtue.
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