FoxESS Community - Owners & Installers Forum

Hi

Am looking to increase my Fox battery storage - at present 3 x 2600V batteries - can anyone recommend a local installer who may be able to help - our original installer not being very helpful!

Thanks

Simon

From what I've read on here, if you can source the right modules (you need the batteries to match the BMS!) then the actual installation is DIYable. Essentially you shut the existing system down (ideally with the batteries charged to about 50% since that is roughly what the new modules will be supplied at), physically add the new modules into the stack, reconfigure the connections, check them, check them again set the DIP switches on the BMS, and then power back up.

I should say - I haven't done this myself! But reading the installation manual for these units - it's not difficult, you just have to be sure to get it right. I appreciate that this will depend on your level of confidence and technical knowledge, so it won't be for everyone. But it's certainly doable.

I'd also say, any electrician worth their salt should be able to sense check the connections with you.

Thanks

Happy to give it a go - is there any way of working out what is the optimum number of batteries in terms of investment vs payback?? Thinking 6-8??

Are there any video links with installation tips??

15 x 370w evolution ultra max panels facing SE-SW
5Kw Fox Hybrid Inverter
3 x 5200V Type C batteries

Thanks in anticipation

I went for coverage of our average daily use, excluding heat pump or EV charging or any other "big" users of power. That said my wife and I both work from home and all our cooking is done with electricity so that works out to be around 12kWh/day.

I'm kinda sorta thinking about adding a seventh battery since we recently changed our heating to a heatpump, but otherwise our six modules are generally fine.

So have a look at your bills / smart meter IHD / whatever and work out your average, and then look at covering that with your batteries.

As to the installation procedure, you can get a reasonable idea of it from the manual. I'm not aware of any videos but I'd be astonished if there weren't some out there, that said there's definitely folks on here with the knowledge and experience to advise you.