I'm setting up a new system and currently have a brand new 105Ah Duracel AGM deep cycle battery. I need to bump up to 24v so I need a pair of matching batteries. The question is if I should buy a second 105Ah AGM or if I should instead go out and purchase two 105Ah FLA deep cycle batteries instead. Or if there's a third option I've not considered.
The system I've got in mind (discussed in another thread) is as follows:
3 x 265W panels
~93V output @ ~9A
100' 10AGW copper wire to controller
40A controller
unobstructed southern exposure for roughly 10 hours a day
summer months primary + tail end of spring and start of fall
I expect to drain about 30Ah a day for two days in a row then shut down all draw on the batteries for the following five days. This means there's seven days of variable strength charge for two days of drain. As far as I can tell the planned system has what I need to charge either FLA or AGM option sufficiently for my needs.
Thoughts about what I should do?
If the advice is to ditch the AGM I'll do that, even though I don't have much use for it elsewhere. Sucks to think of the money in that battery going to waste, but if that's the way it winds up that's the way it winds up.
Thanks!
Steve
The system I've got in mind (discussed in another thread) is as follows:
3 x 265W panels
~93V output @ ~9A
100' 10AGW copper wire to controller
40A controller
unobstructed southern exposure for roughly 10 hours a day
summer months primary + tail end of spring and start of fall
I expect to drain about 30Ah a day for two days in a row then shut down all draw on the batteries for the following five days. This means there's seven days of variable strength charge for two days of drain. As far as I can tell the planned system has what I need to charge either FLA or AGM option sufficiently for my needs.
Thoughts about what I should do?
If the advice is to ditch the AGM I'll do that, even though I don't have much use for it elsewhere. Sucks to think of the money in that battery going to waste, but if that's the way it winds up that's the way it winds up.
Thanks!
Steve
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