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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › Balancer Boards
09-06-2013 07:22 PM  4 years agoPost 1
Four Stroker

rrElite Veteran

Atlanta

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I am looking for a source of battery pack balance boards that you permanently install - like camcorder batteries. I found this place: http://www.batteryspace.com/PCM-wit...Pack-at-8A.aspx

But our hobby does not want to protect the battery at the expense of the heli. We want the equilibrium function without the protection.

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09-06-2013 07:55 PM  4 years agoPost 2
JKos

rrProfessor

Redondo Beach, CA

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Are you looking for balancing during operation or charging?

I'm not sure why you would want to keep balance during use since that implies bleeding energy out of the higher cells to bring them down to the lowest cell. That would seem rather wasteful.

If you charged through that board, it would provide balance and over-voltage protection during charge. If you discharged through separate leads, it would have no impact on discharge capabilities. I'm not sure it if would try to maintain balance while discharging though, and that's what would be wasteful.

- John

RR rules!

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09-06-2013 08:23 PM  4 years agoPost 3
Four Stroker

rrElite Veteran

Atlanta

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That board would make a cheap balance buddy used as you say. There are at least two battery places using internal balance boards - Fromeco and Duralite. Then of course there is the 12Z, 14MZ TX camcorder battery. An internal board draws a few 10's of microamps and should be below the self-discharge of A123 ? I would like to use standard switch/charge jacks for nitro RX batteries.

Does anyone have any experience with these internal board packs ?

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09-07-2013 01:53 AM  4 years agoPost 4
Tyler

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Chicagoland area

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I bought a few fromeco balance boards to make my own A123 packs a few years ago, before LiFe packs came with balance tabs. They simply bleed the cells until they hit proper voltage, but the bleed is very slow. Fine for storage, but not fast enough to balance while under load or during a charge. I believe they may help some while charging, but as much as a balance charger.

They were bulky and clumsy to work with. Mounting batteries with them installed limited your options to a single side of the pack.

Still using a few in planks as rx batteries.

Enjoy things that money can buy IF you don't lose the things money can't buy.

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09-07-2013 02:06 AM  4 years agoPost 5
Four Stroker

rrElite Veteran

Atlanta

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My Bantam BC6-10 charger does a terrible job of balancing and occasionally dis-balances packs. I found it had "balanced" one cell at 2.x volts and the other at 4.y volts. I assume this is a bizaar s/w bug. JKos idea of charging only with a protection board has merit but still uses two connectors per pack.

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09-07-2013 02:28 AM  4 years agoPost 6
Ace Dude

rrProfessor

USA

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Chargers such as the Revolectrix Multi4 and PowerLab 8 allow you to charge through the balance leads. I do this all the time on my PL8 when charging my 2s LiFe RX packs on my nitro helis. Works great and I only need to connect the balance tap to the balance board.

The PL8 has 1A/cell balancing current.

  

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