Update 15/09/2024 :
The 14Ah cells were replaced by 32AH cells and the difference was almost frightening. Despite having been in hospital for 6 weeks the mower starts within a second of cranking. There is no sag in the crank speed, it's a case of turn key and let it go.
The BMS still performs with aplomb though the dump resistor burnt out. I replaced it with a 55W headlight globe. Still Chinese watts though so who knows if it will last.
The system has proven to be robust and reliable. The only downside is I can no longer avoid mowing the lawn due to a flat battery!
If you're interested in more details you're welcome to contact me.
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