Yes totally agree with the DoD issue, I have tried to help it a bit using a good charge controller.. time will tell... So far it's been a good setup... Keith *Keith R. Martin, P.Eng.* *Burnaby, B.C. CanadaSerenity M17, #353* On 28 December 2017 at 20:52, John Schinnerer <john@eco-living.net> wrote:
This...
On 12/28/2017 03:56 PM, Keith R. Martin wrote: ...
My choice was a sealed ultra pure lead AGM group 24 battery providing 76 AH of capacity, with a self discharge rate of about 1-2% per month, 400 charge/discharge cycles to 80% depth of discharge and over 900 cycles at 50% depth of discharge
...is a great example of how DoD affects lead-acid battery life. Take it down to 80% repeatedly instead of only 50% and you shorten the life by over half.
Also the "ultra pure" lead is going to have longer life on average than lower price point batteries. Also lower odds of early catastrophic failure from impurities in the lead.
cheers, John S.
-- John Schinnerer - M.A., Whole Systems Design -------------------------------------------- - Eco-Living - Whole Systems Design Services People - Place - Learning - Integration john@eco-living.net - 510.982.1334 http://eco-living.net http://sociocracyconsulting.com