Battery Charging - Absorption Voltage - Calcium/Calcium Batteries

[sailinglegend420]

Sailing legend still has a tart tongue - perhaps it comes as part of being a film-maker.

Being a film-maker means great attention to detail. If people don't read the threads properly and reply with irrelevant posts then they should expect to be criticised for time wasting.

 

[halcyon]

I am familiar with NiCad batteries developing a memory but am sure I read somewhere that this was not the case with FLA batteries; although not everything one reads on the internet is true!!! Perhaps the "memory" of the Freedom batteries was to do with reduced capacity caused by partial sulphating; the sulphating being reversed by the shock of charging at the higher voltage every so often - and I have just gone and dumped 4 batteries upon which I could have tested this theory - b****r.

The Freedom capacity was not reversible, leave them over winter at 50% charge, come summer all you could get was 50%. The high charge voltage was to generate gassing and stir the electrolyte, otherwise you got stratification and chemicals separated.

These may be only Freedom design problems, or could be common to battery type.

Brian

 

[pmyatt]

The Freedom capacity was not reversible, leave them over winter at 50% charge, come summer all you could get was 50%. The high charge voltage was to generate gassing and stir the electrolyte, otherwise you got stratification and chemicals separated.

These may be only Freedom design problems, or could be common to battery type.

Brian

Hi, Brian, have had a think about that. Surely the inability to charge above the winter 50% level must have been down to stratification of the electrolyte, hence sulphation; not "memory" as in a NiCad battery? I have no idea what causes the NiCad battery memory, perhaps something akin to sulphating? I await being shot down in flames . . . . . .