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imranrajputt

Heliman

PK

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I have icharger 4010Duo i have a issue while charge the batteries i have Pulse 5000mah 65c x 2
Pulse 5000mah 45c x2
i charge these batteries together after charge finish i check the with my battery checker EOS SENTRY and with icharger display the some battery cell are going up like (MAX 4.204...4.205.4.201) (MIN 4.182) like this but i charge only two battery , battery cell on 4.192...4.189 mean not more then 4.19 but when i charge together battery cell are change
Any idea help me out this problem
Thank You

10-16-2016 06:08 AM
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DennisH

Senior Heliman

Baton Rouge Louisiana

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I am trying to understand your question a little better.

Are you parallel balance charging all 4 at the same time?

Are you in Normal, Fast, or Slow balance mode?

What Amperage are you setting the 4010 at?

What are your IR readings? You might have to check each one individually to get this figure. In fact, it will be best to do so.

What I don't' understand is your statement: When I charge together battery cell are change . . . explain further.

Dennis

10-16-2016 07:35 AM
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imranrajputt

Heliman

PK

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Thank you for your reply yes parallel balance charging all 4 at the same time then cell are disturb like 4.205 4.206 4.201 4.192 and i use normal balance mode and 4X5=20 amperage for 4 batteries for 2 batteries i use 2x5=10 amperage
Thank you

10-16-2016 08:01 AM
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DennisH

Senior Heliman

Baton Rouge Louisiana

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It would help if we knew the IR readings.

Try slow balancing charge on the 2 like batteries on each side of your charger @ 1C.

Depending on the IR readings, it could help determine if a cell/pack is going bad.

I parallel charged 6 22.2v 5000mAh batteries last night. I had the time, and it took app 1hr hour to charge all six. Most of this time was spent balancing the packs. Some of my readings are worse than what you're stating.

My newer batteries are always within .001 +/- a few. IR readings are 1 or below. As they get older, the readings start to widen, plus the IR of the batteries start climbing. I have some that show between 10 and 20. I know their life is coming to an end, but I have a few more flights on them.

It's pretty simple to check the IR readings. Charge the packs as stated above, then set up each one and check the IR readings. I normally take a picture of them, put them on my computer (I have a wide screen), and compare all. This usually tells me what's going on.

Also, have you noted the mAh reading while charging? How far are you draining the batteries while flying? Normal charge reading for me is around 4.20, and I do stop flying when they are around 3.80 to 3.90 per cell. This is usually about 7.5 minutes flying time for me.

Hope I am helping, I hope I am not confusing! There's a lot to take in consideration.

Dennis

Dennis

10-16-2016 08:40 AM
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Dr.Ben

rrMaster

Richmond, VA, USA

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The only times I have observed that kind of overcharging are when one or more of the packs being charged in parallel has a weak cell. For that reason I don't usually parallel more than two packs at a time. Too many cells being charged with no idea exactly what each indidividual cell is doing by either you or the safety features of the charger.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

10-16-2016 02:18 PM
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helifanatix

Veteran

Fountain Valley, CA

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Try this:

- Charge at 500mah per pack
- end the charge cycle @ 4.15v or 90%
- this should help charging the weaker cell (as Dr Ben indicates)

- Scott

10-16-2016 04:57 PM
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