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gel-cell battery

Old 07-31-2007, 06:50 PM
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rye
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Default gel-cell battery

hi
i any useing a 12 volt-7 amp gelcell http://www2.towerhobbies.com/cgi-bin...&I=LXL370&P=ML
and this charger http://www2.towerhobbies.com/cgi-bin...?&I=LXL353&P=M how long do i charge it atfer it ran down thanks
Old 07-31-2007, 07:37 PM
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Default RE: gel-cell battery

The instructions on the page on Tower says overnight
Old 07-31-2007, 08:25 PM
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Default RE: gel-cell battery

thanks
but that dont tell me how many hours i dont want to over charge but want a full charge
Old 07-31-2007, 08:28 PM
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Default RE: gel-cell battery

If they don't give specifics, then there are none. Just charge it over night and you will be fine.
Old 07-31-2007, 08:41 PM
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Default RE: gel-cell battery

Wheelnut is correct. The charger trickle charges that battery. Overcharging should not cause harm, as the charge rate is less than C/10. 12-16 hours of charging will bring that battery right up to full capacity from dead.

Ryan
Old 07-31-2007, 08:54 PM
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hellomynameisdookie
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Default RE: gel-cell battery

That's a verrrrrrrrrrrrrrry slow charge, so going over a couple hours isn't going to hurt anything. If the battery was dead it would take 11 hours and 40 minutes to charge it full.

The battery is a 7A which equals 7000 milliamps. The charger charges at 600mA (milliamps). So, 7000 / 600 = 11.6666 which is 11h 40min. Assuming you're not at 100% dead charge, I'd say 9-11 hours would be just fine.
Old 07-31-2007, 08:56 PM
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Default RE: gel-cell battery

thanks guys ,i apperciate the help ,i didnt want to ruin the batterys rye
Old 07-31-2007, 08:59 PM
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Default RE: gel-cell battery

ORIGINAL: hellomynameisdookie

That's a verrrrrrrrrrrrrrry slow charge, so going over a couple hours isn't going to hurt anything. If the battery was dead it would take 11 hours and 40 minutes to charge it full.

The battery is a 7A which equals 7000 milliamps. The charger charges at 600mA (milliamps). So, 7000 / 600 = 11.6666 which is 11h 40min. Assuming you're not at 100% dead charge, I'd say 9-11 hours would be just fine.
Charging a battery of any kind is never 100% efficient. The slower the charge the less efficient it is. I would give this battery 140% capacity to bring it up to 100% charge.

[ (Battery capacity) X 1.4 ] / ( Charge rate ) keep same units

Ryan

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