FoxESS Community - Owners & Installers Forum

Hello all,

I currently have 3x HV25 + 1x BMS stored on one stack, in my loft. System is running great.

In the future, I am planning to swap my old gas stove with an induction stove. We cook almost every day, so I am expecting to require another 1.5-2kwh just for that. Will therefore likely add another module to cater for this. Given that I already now have ~95kg on one sqm, to spread the load, can I place them on two stacks next to each other? e.g. two stacks of two HV25 each and one of them with BMS on top? that would effectively spread only 60kg over one sqm. I think the interconnecting DC cables between the batteries are quite short, so would need to build a longer one?

n.b. loft is fully boarded with T&G 18m chipboard. Would need to check for joist dimensions, but they are I believe standard 40cm spaced.

There are longer (1 meter) FOX branded cables available for interconnecting the battery modules.

I have two phyiscal stacks of HV25s next to each other in one logical stack.

Thank you, that's re-assuring. I will let my installer know.

How many batteries do you have? Any chance you have a picture of the two stacks next to each other?

I've had 5 (and 6 since August, so 164kg!) HV25s up there for 2 years now.

Mine were installed front side up by the installer, so that they span more joists. I haven't encountered any issues but its always been at the back of my mind I must admit.

I would have preferred them in the detached garage to be honest, but it is what it is.

Ahh also in loft then, wow.

If they have been installed front side up, did they have to build some sort of enclosure/rack holding them in place upright?

The battery brackets hold them securely upright and spread the weight over each battery. They're all attached to each other by the brackets so they can't move or fall over.

Thanks. Ah, I thought you had them split into two stacks, e.g. 3+BMS and another 3 next to it. But upright might also help to spread the load.

Mine looks like this.