With all the energy bill relief chatter going on, this is for anyone wanting to have off grid solar instead. These new batts are a game changer imo.
We had been maxing out the 3000w inverter for half an hour, boiling kettle several times, Big TV on and lights on. You can hear the cooling fan running, meaning it's working hard. The panels (2400w) were in about 50% shade at the time of day and year, but the batt voltage is not even dropped below 24v.
These weigh under 30kg each and are no bigger than a big diesel 4WD battery. They're designed that dimension for having an off road setup, replacing your original battery and a second one also in the engine bay or somewhere else in an RV. I went with these and a 2000w 4 stroke generator, instead of a Tesla power wall or big capacity of deep cycle lead-acid again, because I'm not here much and if I need to power up to 2000w after the sun goes down or for hours on a black sky day, a 400$ cheapy generator does it. I still have a big 5kva gas guzzler for running welders, compressors,
workshop. There's also a secondary 12v DC system for led lights and to charge a cellphone or laptop at night
The batts I replaced were 4x 6v lead acid deep cycle. Need water monitored and two men to lift one, occupied about a metre square and were about 5k$ in 2013. A lot to have full power all night.
Below:
Under 30kg each, 2x 12v 500ah on special.
2000w generator on special, 77db isn't quiet, but it idles unless it's under load and plugs into inverter far from house anyway.
Just under 1000$ total
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