Another low engine battery.

[bigtwin]

I think you have forgotten the scenario involves the lithium being discharged via the BM.

How much current do you think that the BM is asking of the LiFePO4?

Not really. Lots of people leave their motorhomes over winter then post on forums asking why their battery has gone flat .

Which battery?

Ian

 

[Ian_H]

How much current do you think that the BM is asking of the LiFePO4?

Whatever the starter battery needs to replace losses. Rereading my message I realise you may have thought I meant bms rather than battery master!

 

[bigtree]

The Ablemail can be programmed for different charge regimes, I had to set mine for on more than off last winter in Scotland.

The Ablemail charges with a 3s pulse of 3a in ever 15s whereas the Battery Master is a constant 1.1a, so what am I missing as to what is being delivered to the starter battery between the two ?

 

[Two on Tour]

The Ablemail can be programmed for different charge regimes, I had to set mine for on more than off last winter in Scotland.

The Ablemail does indeed have different charge regimes, but their instructions are as clear as mud as to which setting does what.

 

[bigtree]

The Ablemail does indeed have different charge regimes, but their instructions are as clear as mud as to which setting does what.

View attachment 975485

True, I set mine to 6.

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[Ian_H]

And I have mine set to 4, so the starter battery is charged without any solar being present. Edit- this results in the 230Ah lithium losing about 1% a day when parked up for a week (measured by fully charging at start and end)