I've been reading around on the forum about compressing LiFePo4 batteries but my question isn't about how to compress the batteries specifically.
When you're top balancing the cells (all in parallel, 3.65v) and the charge is complete, one would want to disassemble the compression, rearrange the cells to a more useful voltage (~12v) for discharging or using.
I came across a video that I'm hoping was being over the top, but it went on to say that once the cells are above 3.4v, the compression should not be removed as the cells could start to swell.
So my question, Once the cells are top balanced (3.65v), how does everyone go about reconfiguring their pack to their nominal voltage (12/24/etc..).
Do you, after top balancing;
When you're top balancing the cells (all in parallel, 3.65v) and the charge is complete, one would want to disassemble the compression, rearrange the cells to a more useful voltage (~12v) for discharging or using.
I came across a video that I'm hoping was being over the top, but it went on to say that once the cells are above 3.4v, the compression should not be removed as the cells could start to swell.
So my question, Once the cells are top balanced (3.65v), how does everyone go about reconfiguring their pack to their nominal voltage (12/24/etc..).
Do you, after top balancing;
- dissasemble the compression, and rearrange as the cells wont swell in the 5 mins it takes to reconfigure
- Arrange the pack to its final configuration and use wire/jumpers to parralell. Once charged its just swapping in bus bars
- No compression because its something that wont happen until the batteries age and 1-2 cycles is fine.