is one 12 volt grp 31 battery enough for me
Well here is the deal. I at this time unfortunately only have the chance to go out a few times a year. Previously we were able to go on much longer more frequent trips. I have a 2000 watt inverter ...
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dave17352 wrote:Yes you may run them all the way down. BMS disconnects above 16v or below 8v. But honestly almost all the energy is between 14.5 and 11.5 so I would stick with that for longest life.
On these lithium batteries I did not read where you could run them all the way down. I read someplace that you could run them to 80 percent discharge. Do they deliver more power for the surges than a AGM flooded battery?
Also no worries about leaving them half charged in storage as this is the preferred storage level.
Cranking amps is misleading as it is just rated 3.5 seconds vs. I believe the CCA definition is for 30 seconds. I would stick with max continuous draw or even 80% as a practical design criteria.
This info is included in the linked documentation.
Huge benefit to solar users is that there is no long slow absorption charge. Lithium pretty much fills to 100% at full speed.
And absolutely no need to provide venting for lithium.
