I recently saw this.  I haven’t used either, but its looks well done.  

https://signaturesolar.com/eg4-powerpro-ess-14-3-28-6kwh-capacity-eg4-18kpv-eg4-powerpro-wallmount-battery-9540-pending/
 
<https://signaturesolar.com/eg4-powerpro-ess-14-3-28-6kwh-capacity-eg4-18kpv-eg4-powerpro-wallmount-battery-9540-pending/>



> On Sep 16, 2023, at 5:02 AM, Jason Szumlanski via RE-wrenches 
> <re-wrenches@lists.re-wrenches.org> wrote:
> 
> I would definitely consider Sol-Ark if there were a NEMA 3R wall-mountable 
> 48V battery on the market. I'm having a hard time finding that.
> 
> For what it's worth, Franklin got back to me and they fully and 
> enthusiastically will support an off-grid system. There is no question that 
> they are making inroads. We are getting requests from clients for their brand 
> specifically. That said, I agree that there is significant risk in trying out 
> a newcomer for an important project, but I'm running out of options.
> 
> Jason Szumlanski
> Principal Solar Designer | Florida Solar Design Group
> NABCEP Certified Solar Professional (PVIP)
> Florida State Certified Solar Contractor CVC56956
> 
> 
> 
> On Fri, Sep 15, 2023 at 11:24 PM Jerry Shafer <jerrysgarag...@gmail.com 
> <mailto:jerrysgarag...@gmail.com>> wrote:
> Jason, Wrenches
> I am familiar with Franklin and when I asked them about the battery they had 
> all the answers but when I asked about the AC coupled inverter inside, mainly 
> who made it is it field serviceable I got deer in the headlights and a few 
> weeks later I asked them the same thing and again no answer. I would go with 
> something that has been around some. You talked about Solark, I have had no 
> issues with any of their inverters and my latest install was today connected 
> to a fortress. Of course time will tell on anything we use, Maybe franklin 
> has made it known what is inside but for me I will not use my customers as 
> unknowing guinea pigs, I test products myself and see what survives.
> Jerry
> 
> On Thu, Sep 14, 2023 at 1:35 PM Jason Szumlanski via RE-wrenches 
> <re-wrenches@lists.re-wrenches.org 
> <mailto:re-wrenches@lists.re-wrenches.org>> wrote:
> Does anyone know if Franklin supports their AC-coupled battery solution in a 
> completely off-grid scenario (no grid present)?
> 
> I need to install a demonstration system with ~40kWh capacity to run loads in 
> an outdoor off-grid facility. It needs to be wall mounted, NEMA 3R, and have 
> 10kW AC output rating minimum. Aesthetics are important.
> 
> I'm contemplating installing an Enphase 5P battery system, but it's not 
> officially supported, even though I believe I can trick the system enough to 
> get it commissioned and running in off-grid mode. If Franklin supports this, 
> that's a checkmark in their column of the comparison chart.
> 
> I'm not opposed to a 48V DC battery system with a Sol-Ark 15k or something 
> like that, but I think my options for wall-mount, outdoor, and beautiful are 
> going to be limited.
> 
> I don't need any generator integration.
> 
> Jason Szumlanski
> Florida Solar Design Group
> 
> 
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