Lithium Batteries

[Tally Ho]

I got out to check the batteries today, and I captured the charger info as well…and I feel better today seeing the battery voltages and SOC’ s.

first, charger reports…I turned off power to go to the fuel dock and pump out, and then turned the power off again to check something else…so ypu see a few short charges most recently. But you see a few longer duration charge cycles as well.


here are the charger settings for Li-ion…


and here are the battery statuses: Both batteries had exact same voltage, but SOC was off by 1%.
neither battery “disconnected” the Charge MOSFET.


I can probably live with this for my limited power needs.

Greg

 

[dlochner]

and here are the battery statuses: Both batteries had exact same voltage, but SOC was off by 1%.
neither battery “disconnected” the Charge MOSFET.

That 1% difference may be due to cell balancing. The second battery was still balancing the cells.

 

[Johann]

Both batteries had exact same voltage, but SOC was off by 1%.
neither battery “disconnected” the Charge MOSFET.

Nice. It’s possible one battery had a greater cell imbalance initially and needed a couple of charge cycles to get the cells closer. Maybe that was the cause of a higher level of protection preventing it from discharging before.