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

[Dave Angelini Offgrid Solar]

Hey Kevin,
Think the op and storage Temps are mixed up? Even
so,  pretty cold, even for electronics 😉

Bill in advance on this one !
The all in one's are hard to warm up to but...

Good Luck!

Dave Angelini Offgrid Solar
"we go where powerlines don't"
    [1]https://offgridsolar1.com/ [2]  [1]
e-mail  offgridsolar at sti.net
text 209 813 0060

On 2024-11-22 9:54 am, Kevin Pegg via RE-wrenches 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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Links:
------
[1] http://members.sti.net/offgridsolar/
[2] https://offgridsolar1.com/
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