[RE-wrenches] Frozen LPF batteries - damaged or salvageable?

[Jay]

I guess I’d talk to the battery company about the batteries. 

I mean if they actually froze I suppose the separators could have been damaged which could lead to all sorts of bad issues?  Is that worth the risk? 


But if you’re thinking of total replacement, midnite has everything you need and it’s in your neck of the woods. 

Jay





> On Nov 22, 2024, at 10:55 AM, Kevin Pegg via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
> 
> 
> Hi Wrenches,
>  
> I’ve been asked to take on a project that was abandoned for 16 months. It has 3 stacks of 400Ah 51.2V Lithium batteries (gsl-energy) tied to a Sol-Ark. It was running at one point spring of 2023 with generator charging but has been offline dark for over a year. PV is still in crates.
>  
> The batteries sat in an unheated unfinished building winter 23/24 and it would have got down to -40C (-40F) for weeks during winter cold snaps. The BMS did not power on, did not spend time troubleshooting during the initial assessment as I wanted to learn more.
>  
> The battery specs say storage no colder than 0c (32F) and operation no colder than -20c (-4F).
>  
> What I am trying to determine is if those batteries are salvageable, or damaged and if we should just replace them with new. I am also tempted to replace the sol-ark, haven’t worked with that brand before but am not impressed with what I have heard from other people’s experiences.
>  
> Kevin Pegg
> EA Energy Alternatives Ltd.
> 37471 Hwy 16 E
> Telkwa, BC  V0J 2X2
>  
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