lawrosa wrote:
Yes You guys have 4. May make a bit of a difference..
But if you look at my test and my 70 amp draw I ran this for about an hour.
I technically have 220 AH's. Although I didnt pull from the truck batt as expected, with inverter losses I pulled the batts down to some 60% per hydro readings.
AH's are AH's. It would seem if I kept going a bit after alarm I would have successfully pulled the 100 ah's /50% from the batts.
70 amp draw x 1 hour should equate to 70 + ah's out of battery with losses. But Peukerts law comes into play.
https://en.wikipedia.org/wiki/Peukert%27s_law
Two 6 volts @ 225 ah's im sure would perform the same discharge wise but with a more pronounced voltage drop.
But I cant prove this unless someone out there in internet land either trys it, or I buy 6 volts myself and try it.
Its a secret the 6 volts guys are not talking about....LOL
But not too repeat myself I can easily get rid of my high amp draw items and live a happy life with 6 volters I am sure.
From what I read a 70 amp draw on 6 volts for say 10 minutes and I would assume your inverter will be beeping away.. ( 2- 6 ers, not 4...)
a key component to success (or failure) is the inverter shut down voltage. One poster mentioned his shut down near 10v and worked fine on a pair of 6V, not suprising, but that low of a shutdown risks damaging batteries by drawing them down near 0% SOC.
By contrast mine alarms near 11.5V and shuts down around 11.2. all the difference in the world when hooked to a PAIR of GC. 1000W draw drops them down do 11.2 @ around 80%SOC. Pianotuner has had similar experience. now with a 10V shutdown, no problem.
with Four GC, load is shared, and I can run the inverter at less than 50% SOC without an issue.
