Is this upgrade the way to go?

[jedics]

My sbms120/9kw lfp/2kw solar/4kw giandel inverter is all running good for 6 years apart from the fact the Giandel cant be switched off by the sbms and has damaged my batteries in the past. So before I upgrade to 8x Eve mb56 628ah batteries I should solve it.

The solution that seems to gives me the best bang for my buck is a Victron 24/1200kva inverter for $500 to run my base loads on and uses 10w in standby power instead of 40w with the Giandel. Program the Victrons low battery cut off to about 25v and then I dont even need the sbms to be able to turn it off.

So I protect my batteries, hugely increase efficiency ( and just switch on the Giandel for my coffee machine, oven and mitre saw when needed.) for about $500.

Any suggestions?

[Dacian Todea (electrodacus)]

Yes that 1200kWA is a good value Victron inverter and it is also very low standby power so excellent for supplying low power ac devices.

[Dave McCampbell]

We also have excellent quality, and reasonably priced Giandel inverters, 120 V and 240 V for large loads, on our boat.  They are normally off until we need them for things like electric cooking and big tools.  When they are on we are watching on our monitor what is happening with our big LFP batteries, so there is little danger.  Our 'base loads' are small, basically recharging battery powered devices.  For those we have always used a small 600 W inverter, now also a Giandel.  It has a very low standby power draw and is off at night.  All of these inverter units get their 12 V power from our main load buss which is controlled by the SBMS0 through a Blue Seas 7713 relay.  Should any cell in our house bank get really low the SBMS0 will disconnect the load buss, including the inverters, from the batteries.   Then we just need to remember to use a resistor to slow the capacitor charging when reconnecting.