[RE-wrenches] New Lithium Batteries on Sunny Island System

[jay]

HI Jim,

If youre not doing AC coupling and AGS then shouldn’t be a problem. 



> On Nov 25, 2025, at 8:31 AM, Jim Gowdy via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
> 
> Hello All,
>      I have a client that just got some lithium batteries and they have a sunny island inverter with a Midnight Charge controller.  I've heard and experienced integrating Lithium batteries into a Sunny Island inverter is challenging and could create problems.  Has anyone had experience with these batteries or installing lithium batteries with these components?  Below are some details about the system so far.....
> 
> System:
> 48v
> 
> NEW BATTERY:
> China Aviation Lithium Battery CO. 
> model: CA180F 
> nominal voltage: 3.2v
> rated capacity: 180Ah
> rated energy: 576Wh
> 
> Inverter:
> Sunny Island 
> model: SI 4548-US-10
> 
> CHARGE CONTROLLER:
> Midnight Solar Classic 150
> 
> SOLAR ARRAY:
> N/A....it was dark when I was at the site so I couldn't take any notes
> 
> 
> 
> --
> Jim with Gowdy Electric
> Cambria, Ca 93428
> business  805 927 2630
> cell  805 975 5279
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