Solar setup advice please

[Mrjmegson]

Speaking of battery prices, have a look in the for sale section on the forum, I'm selling some at less than half price.

 

[binky]

Yeh that's the way I understand it.

A full 0 to 100% charge/discharge hammers them, let's say it takes away 1% of its life.

But then a lesser volume cycle will reduce the life by less, so giving effectively more cycles, let's say 50 to 100% reduces battery life by 0.5%, then 80 to 100% reduces the life by 0.2%, etc.

It's how they have got the charge cycles upto 6000, by limiting the depth of discharge, and trickle charging at low and high charge levels. Surprisingly complicated things are batteries

 

[Mrjmegson]

It's how they have got the charge cycles upto 6000, by limiting the depth of discharge, and trickle charging at low and high charge levels. Surprisingly complicated things are batteries

Yeh, my batteries claim 6k cycles, but with a DOD of 80%.

I'd love to know how Givenergy are doing it, they offer something like 10 year, 100% DOD, unlimited cycle warranty.

 

[Ucatchmydrift]

Yeh, my batteries claim 6k cycles, but with a DOD of 80%.

I'd love to know how Givenergy are doing it, they offer something like 10 year, 100% DOD, unlimited cycle warranty.

I havent checked that make, but usually when claiming 100% dod, the batteries are actually a larger capacity than stated, usually 10-20%, so they can then get away with the 100% advertising, not technically true though.

 

[Mrjmegson]

Yeh, that's true of my batteries, the usable is less than the gross.