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Old Aug 22, 2014, 12:11 PM
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IMAX B8 taking awfully long to balance batteries.

I own an IMAX B8 charger and i have owned it for 5 years more or less and have been quite happy with it.. does everything i need.


the problem is that since some months .. its taking awfully long to balance a Lipo.. like 2 or 3 hours to balance (balance usually starts with LiPo at 30-40% percent charging at 0.8C more or less.. i usually charge at a bit less than 1C) .. sometimes more than 4 hours and some times it never ends and i have to stop the charge manually..

at first i tought it would be a LiPo problem.. batteries getting old and cells aging diferently that would cost much inbalance and so the charger would need to expend mroe time fine balancing..

but more and more often is doing it with more and more LiPos.. some even brand new..

Is like it reaches 4.18V per cell and then it just sits there with the fan on balancing like 4.20-4.19-4.18 and stays there for hours with the cells not reaching perfect 4-20-4.20-4.20 .. like if it doesnt manage to equalice the cells perfectly or needs many hours to do it..

i dont know why.. the charger seems to perform good as usual...
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Old Aug 22, 2014, 06:27 PM
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Try cleaning all the connections?
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Old Aug 23, 2014, 09:37 AM
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Originally Posted by lrb75 View Post
Try cleaning all the connections?
could be... will give it a try

im trying plugging the balance plug of my LiPos ..wich almost all are 3S into the other ports.. like 4, 5, 6, 7 and 8S (in the first 4 frim right side) to see if it might be wear on the 3S port
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Old Aug 23, 2014, 05:31 PM
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What batteries are you charging?
What charge current are you specifying?
What is the actual charge current?

Have you tried charging at 1C or 2C?

Glen
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Old Aug 23, 2014, 05:42 PM
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Originally Posted by ggcrandall1 View Post
What batteries are you charging?
What charge current are you specifying?
What is the actual charge current?

Have you tried charging at 1C or 2C?

Most of them are 3S between 1000 and 3000mAh..

i usually charge at less than 1C to prolonge the batteries life.. for example if im not in a hurry i charge a 2200 3S at 1.6 to 2.0A .. a 1500mAh at 1 to 1.3A .. etc
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