For the life of me I can’t find that original thread Gents but have no doubt that Pollenface Mate is onto something known also we should consider.
IIRC in the other thread my initial concern on a deeper/shadier gully diesel dam pump battery was when I found it swollen/dead which I assumed was the 5W super cheapo solar panel over charging it unregulated.
As it was completely caput I couldn’t test it for being overcharged but was kindly enlightened that over winter it had not received enough charge and calcium (i think educated) build up was the cause of the expansion🥲
My tractor circa 800cca lead acid battery hasn’t faulted for years now with its 20w Jaycar in the most direct sunlight panel position possible on the block but it also has a fairly decent parasitic drain coming from the starter motor diodies too I believe which may negate overcharging possibly?


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