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I am in the middle of my initial pre-install cell top-balance with cells wired in parallel and charging to 3.7v with my mastech power supply. Its been chugging away for two days now at 7+ amps and dropping a little, and I expect a couple more days...
I connected the cells using my bus bars on every other and 16ga wire between. After discussion in a different thread about my final design to use 16ga wire to monitor/balance cells after installed from central, or at least easy access, terminal blocks.... I checked the voltage drop from the 'first' cell the power supply is connected to the 'last' in the string.
Turns out that there is not a LOT of drop, only about .1v, but some for sure I guess from the 16ga sections adding up to *some* resistance.
MY QUESTION is... as the cells come up closer to my final voltage (set to 3.70), will they balance out across the whole pack in parallel? I am assuming the cells closer to the power supply will reach the target first; and the whole idea of a parallel setup is that the charge will essentially skip over the cells at the final voltage and the amp draw drops off to nothing once all cells are at the setpoint.... right?
just checking!
I want to make sure that the batteries at the end of the line won't be ending up lower than the earlier ones by virtue of the voltage drop in the wires?
or, do I need to 'finish' each cell individually with a fixed length of wire to be certain they all 'finished' at the same top voltage?
I connected the cells using my bus bars on every other and 16ga wire between. After discussion in a different thread about my final design to use 16ga wire to monitor/balance cells after installed from central, or at least easy access, terminal blocks.... I checked the voltage drop from the 'first' cell the power supply is connected to the 'last' in the string.
Turns out that there is not a LOT of drop, only about .1v, but some for sure I guess from the 16ga sections adding up to *some* resistance.
MY QUESTION is... as the cells come up closer to my final voltage (set to 3.70), will they balance out across the whole pack in parallel? I am assuming the cells closer to the power supply will reach the target first; and the whole idea of a parallel setup is that the charge will essentially skip over the cells at the final voltage and the amp draw drops off to nothing once all cells are at the setpoint.... right?
just checking!
I want to make sure that the batteries at the end of the line won't be ending up lower than the earlier ones by virtue of the voltage drop in the wires?
or, do I need to 'finish' each cell individually with a fixed length of wire to be certain they all 'finished' at the same top voltage?