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« on: October 27, 2013, 03:49:03 PM »
nabam
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how do i charge a lipo with mah capacity which is not a multiple of 100.eg.2450 mah??My balance charger allows only keying in of mah capacities in multiples of 100..like 1.8,2.2,2.8 etc.and i have a 2450 mah but no option of 2.45 mah. Bang Head is it ok to charge a 2450 mah  at 2.4 or 2.5 amp hour settings? i use a imax b6 type of charger.Help..
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« Reply #1 on: October 27, 2013, 04:25:24 PM »
santhosh-r
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It is okay to charge at 2.4A setting than 2.5A setting , lesser is always better.
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« Reply #2 on: October 27, 2013, 05:03:56 PM »
avesh
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Dont crash Heli, Crash Tx
2.5 for me, so far no issue..
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« Reply #3 on: October 27, 2013, 05:23:32 PM »
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Thank Santosh and Avesh for the replies. But @Santosh.Why lesser is better?
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« Reply #4 on: October 30, 2013, 10:55:01 AM »
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Because LiPo batteries are unstable and overcharging them increases the risk of damaging the battery and it might go up in flames.
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« Reply #5 on: October 30, 2013, 01:58:34 PM »
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Quote from: Hobby_Flyer on October 30, 2013, 10:55:01 AM
Because LiPo batteries are unstable and overcharging them increases the risk of damaging the battery and it might go up in flames.

  :bow:Yes i know the Lipos are to be treated with respect but was expecting a more technical answer..
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« Reply #6 on: October 30, 2013, 02:59:06 PM »
sanjayrai55
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If you try to charge at 2.5 the batttery will be fully charged at 2.45 but the charger may keep charging. This is dangerous and will also likely ruin your battery.

No technical stuff, just common sense

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« Reply #7 on: October 30, 2013, 03:22:17 PM »
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As long as you are balancing the lipo while charging , your are ok. That is not to say that there will never be a problem  but keep an eye on the cells as they are charging.
1 c rule of thumb is useful to improve the longevity of your packs. The 45C packs are rated for a 10C charge and the 35C packs are 8C charge rate and so on. But still i would not charge my 45c lipo with 10c rather 2c should be perfect.  Charging at a lower current will extend the life of the battery a little, at the price of taking longer to charge. A bit tech side  Smiley
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« Reply #8 on: October 30, 2013, 05:03:46 PM »
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What battery is it.
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« Reply #9 on: October 30, 2013, 05:56:45 PM »
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Quote from: sanjayrai55 on October 30, 2013, 02:59:06 PM
If you try to charge at 2.5 the batttery will be fully charged at 2.45 but the charger may keep charging. This is dangerous and will also likely ruin your battery.

No technical stuff, just common sense


All "intelligent" chargers - which includes the iMax clones - will taper off to around 0.2 amps as the battery approaches full charge. There is neither danger nor possibility of ruining the battery.

 
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« Reply #10 on: October 30, 2013, 06:29:57 PM »
avesh
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Yes that's true, that's intelligence all about. Smiley
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« Reply #11 on: October 30, 2013, 06:43:00 PM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth
Sushil, I use a HK Accucel. Here are actual observations: Assume I am charging at 2.2 A. When my battery reaches full, in this case (#S) 12.6, it is still at about 1.6 or so A. It then gradually tapers off over a period of 10~15 minutes.

I hope my charger is OK, but if it is, this represents the risk I mentioned.

Personally, I would NOT take that risk, but charge at 2.4 A. "Kee pharak pehnda?"Cheesy
 
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