[RE-wrenches] Exploding LFP battery
Dave Angelini Offgrid Solar
offgridsolar at sti.net
Thu Jun 17 10:01:34 EDT 2021
My .02 on this, and just a guess, the open loop charging parameters were
not set right or charge limits for the battery were too high. The other way
to kill LFP is large loads exceeding the battery max discharge current.
Closing the loop eliminates just about all of those issues. It brings the
battery into the safety area of LA batteries that are still hard to beat
offgrid. I am not saying you can't blow the top off a LA battery either
Dave Angelini Offgrid Solar
"we go where powerlines
don't"
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text 209 813 0060
On Thu, 17 Jun 2021 07:23:07 -0400, John
Blittersdorf wrote: This just proves the weak link is the BMS. I had the
honor of replacing the BMS in that exact model in a stack of 3 batteries.
Luckily it was on the bottom shelf so I could pull the monster out onto the
floor to get access to the lid. The lid is sealed shut but with persistence
it opened. I was working with their tech support and following their
instructions. I disconnected it from the other two that were in a parallel
configuration before opening. Battery voltage was zero at the terminals. I
did voltage checks at various checkpoints to confirm it was the BMS at
fault. Relion sent a new BMS which I carefully installed and it has worked
fine since. Had I seen this photo first, I may have not been so eager to
see the inside of that battery. John Blittersdorf
On Wed, Jun 16,
2021 at 6:13 PM Chris Worcester wrote:
https://www.redwoodmaterials.com/recyclewithus [4] these folks are
seriously getting into recycling lithium batteries, setting up house out by
the Tesla giga factory out east of Reno. Chris Worcester
chris at solarwindworks.com [5] 530-448-9692 Sent from my Samsung Galaxy s9.
-------- Original message -------- From: jay Date: 6/16/21 12:49
PM (GMT-08:00) To: Jeff Clearwater , Jeff Clearwater , RE-wrenches
Subject: Re: [RE-wrenches] Exploding LFP battery Hi Jeff, I don't know
if you saw the photo. No cutting involved. The top is removed with roughly
14 fasteners. No tools or prying was involved in the removal of the top
cover. jay
On Jun 16, 2021, at 12:00 AM, Jeff Clearwater wrote:
Hey Jay,
So I don't believe ReLion batteries are openable - so it's most
likely that when he decided to open it he cut into it and shorted the
leads.
As for recycling - first is health safety! I'd suggest he contact
the manufacturer and get specific instructions for safing the mess. Will
Prowess of DIY Solar Youtube channel had some leaky cells and the
manufacturer sent specific instructions to contain and ship back the unit.
You could contact him and he might know but the manufacturer might know
better for that specific model.
Hope that helps!
Jeff C.
Village Power
Design
frenergy [11] June 15, 2021 at 9:39 PM
Very few
details...What does it mean "he opened it up" I would even know how to do
that with the L-ions I've been around, seems like its something a
manufacturer should be doing. Temperature? charge rate? recent usage
history? Age? Was it disconnected? Did contacts touch a conductor?........
You can probably get water to explode if you abuse it just right.
Bill Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
[12]
Taylorsville, CA 95983 [13]
530.284.7849
CA Lic
874049
www.frenergy.net [14] On 6/15/2021 8:14 PM, Jay wrote: --
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List rules "> Jay [24] June 15, 2021 at 8:14 PM A fellow
installer sent me this just now.
The battery wasn't working, 5v.
He
opened it up and it exploded when he opened it. The lid hit the roof.
Fortunately no one was injured.
Anyone know what to do with this? IE
recycling?
And just another example of non explosive lithium batteries
exploding
Jay
Peltz power.
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