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how to connect balancer charger to 18650 pack
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What you found is the way to ruin cells. NEVER charge cells in series if possible. Get a charger that charges individual cells, take them out of the holder and charge them. If one cell charges before the others, you'll reverse-charge one or more of them, resulting in a nice red piece of junk.
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thanks rukbat
the way you recommend is the one i do since i begone usind 18650 cells
but my wish was to insert cells into control box
and not to take them out every time for charging
but also i fear to blast my detector box with overcharged cells
ok i must search another solution
regards bernd
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Originally posted by Rukbat View PostWhat you found is the way to ruin cells. NEVER charge cells in series if possible. Get a charger that charges individual cells, take them out of the holder and charge them. If one cell charges before the others, you'll reverse-charge one or more of them, resulting in a nice red piece of junk.
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You have 4 pins for the balance charger.
3 individual positives, one for each cell.
1 ground to be used for all cells
You can solder additional wires into your battery pack to plug into the balance port.
You also have a balance plug for a "2S" (2cell) pack that is similar, 2 positives, 1 ground for both cells.
This is how the charger controls the charge rate of each individual cell.
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Originally posted by Qiaozhi View PostThat may the case in an ideal world, but in reality virtually every piece of equipment with a rechargeable battery pack performs the charging with the cells in series.
Cheap junk will always be cheap junk, no matter how much it sells for.
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Hi Rukbat I know what your saying and you are kind of right, BUT
All of the model aircraft chargers for muticell packs monitor each cel during charge.
So if one cell tries to go above 4.2v it loads that cell during charge so its terminal voltage does not go above 4.2v
So there is no reason to feal this modern charger balancer.
The cells Bernte has are the A123 style and are Lithium IRON LiFe and are extremely safe.
Lithium Polymer can fail and burn up if charged incorrectly, or if loaded beyond their discharge capacity.
Giant cod has the charger multiway plugs.
I make up 3 cells with the charge lead - then glue cels - side by side and place pvc type heatshrink over ~ 2 layers = You must leave the charge plug hanging out to easily plug into charger. I have a main power cord and plug too hanging out of the pack.
When I detect my cell pack is in my pocket and plugs into the front of the control box.
Lighter for 6hours of swinging
S
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Originally posted by UFO View PostLike this,
THIS IS WRONG
If you measure between the first and last pins of the balance plug on a LiPo you'll get the full rated voltage. If you keep the ground probe on the ground pin, and move the positive probe across the pins on the balance plug, the voltage will increase by about 4.2V per cell when the LiPo is fully charged.
THE WIRING DIAGRAM YOU HAVE PROVIDED IS FLAT OUT WRONG AND DANGEROUS FOR A LIPO CHARGER.
In your wiring diagram, measuring the voltage on the first and last pins would only read the voltage of a single cell.
The other diagrams provided are correct.
Originally posted by UFO View PostThis is not a balance charger and the schematic is wrong. Not trying to be a ****, but these suckers will really burn if miss-treated.
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