Sojourner1
Itinerant
If I were building from scratch using the aluminum cells with the blue wrap this shelf lining is what I would use between the cells.
What material to use in between prismatic cells
- Thread starter atti
- Start date
giorgosxristou
New Member
old post but i would like to ask,is it necessary to use a material between the cells?
Thank you.
Thank you.
There is some thought that in a mobile environment the vibration can cause the wrapper on the cells to deteriorate. The additional cell separator is insurance against that.
giorgosxristou
New Member
so ,if there not vibrations in not necessary to add a layer between the cells ,am i right? for example my battery pack is for home use ,so it will be fixed peace of equipment.
I think it's good insurance to use a separator.
Coydon
New Member
I'm wondering the same thing, have yet to find any information about what kind of alarming damage people are seeing from 'raw' cells being compressed together, much less of an actual failure linked to this.
Well, it could have been a contributor to the "house burned down" thread; initially the cells had been installed without a separator which may have led to damage.
Partimewages
Solar Addict
Cells expand and contract. This is just another layer of protection.
giorgosxristou
New Member
what is your opinion about cork between the cells? about 1mm or 1.5mm .
chrisski
Solar Boondocker
- Joined
- Aug 14, 2020
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- 5,476
I had a swollen cell today in a smaller battery I had at my house today that was not part of a mobile installation. I had no idea why it swelled. I can crush it into shape with my hands.
I did not notice until after I took it apart after removing compression. I had this one compressed twice, first between four pieces of quarter inch threaded rod, and second three bands of strapping tape. I took all that off and came back a few minutes later and the cell had swollen.
I used Neoprene 1 mm thick, so its compressed to less when thick. I've also used cutting board. Lately, I bought them with my cells. These are the epoxy fiberglass insulation sheets that I got with my last order. I'll hold my opinion on cork, only because I don't know.
hardtop
New Member
I didn't use anything in-between cells. One reason is the bus bars would be further apart and secondly I don't see a need for it since the cells are squeezed together with threaded rod. I will pull it apart after a few years and check for problems. If you wanted something to buy locally the hw stores sell super thin sheets of plexi glass in the window section.
Ordered white cutting board mats here: https://www.ebay.com/itm/334131406675?var=543137963324
Unfortunately they didn't arrive in time - I wanted to get my pack built, so I used VHB tape. Super happy with how it worked out.
Someone mentioned they thought the 3M tape was too permanent, however a piece of mono-filament fishing line does a good job of cutting right through adhesive tape - that's how you get unwanted body trim off a car or truck.
I like that the tape immobilizes the cells for mobile use, insulates the cases from each other, plus provides a little cushion in compression.
The boards finally did arrive and they're really nice - so there's one in the kitchen and one in the motorhome galley. LOL
I think they would have worked out really well, and would surely have used them had I had them on hand.
VHB instead...and I put a sheet of 1/8" rubber on the bottom:
Got a recent like on this post so I thought I would update...
This was from January 2022, so this battery has been in service for two and a half years - 20 charge cycles indicated, it works absolutely perfectly. We have all the power we could want for our little camper.
Here's testing out our new starlink setup:
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