Time to change batteries
I haven’t been on this forum for a long time. I’m glad to see it is still going strong.
My off grid system consists of 1880 watts of PV, a Morningstar MPPT 60 controller, a Magnum-MS4024PAE Inverter/Charger, Magnum BMK (Battery Monitor Kit), 8 Sun Xtender AGM 6V 305ah batteries set up as two 24 volt strings to give me 610 ah and a generator. My batteries (and system) can see temperatures from -15F to +95F.
My loads are a 19 cubic foot refrigerator, 55 in TV, 3/4 HP
240V well pump that runs about 20 minutes over a 24 hour period and a few LED
lights. I also have an electric coffee maker that only runs when I’m running
I typically use my system on weekends only, with maybe 5 full
weeks a year. So the batteries stay fully charged Monday through Friday.
I almost always turn on the generator in the mornings when making my coffee which always gets the batteries charged to over 90% State of Charge.
I installed my off grid system in 2012, the first set of
batteries went in 2016. I replaced them with the same ones and now my 2nd
set is on its way out. So I’m getting less than 4 years per set of batteries.
I want to switch from AGM to Flooded this time around with the hopes that these will last longer (even though I don’t what to do the maintenance).
- Do you see any flaws in my setup?
- How much time per week do you spend checking water, SG and other battery maintenance?
- How much water do you normally use in a week for the batteries and where do you get it?
- Given the possible temperature range my batteries live in (-15F to +95F), would I be able to use an automatic watering system? Probably not.
- I’m considering the Trojan SSIG 06 405 as my next set of batteries. How does it compart to the L16 RE that is talked about so much on this forum?