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Camping/emergency battery pack
#11
(11-29-2019, 12:10 AM)ptchernegovski Wrote: Does anyone have an idea for the modular cell pack design I could do?

After reading some other posts, and modular tool cases, I am thinking of going with this Tactix case for the cells and charger: https://www.bunnings.co.nz/tactix-562-x-..._p05821075

Than having this case on top for inverter, BMS, and outputs: https://www.bunnings.co.nz/tactix-modula..._p06120421

I designed my cooler to use the same packs I have in my home powerwall - so I could interchange them.  Don't know if you have a home powerwall but maybe find a design so they can interchange?  Just a thought.
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#12
(11-29-2019, 01:57 AM)OffGridInTheCity Wrote: I designed my cooler to use the same packs I have in my home powerwall - so I could interchange them.  Don't know if you have a home powerwall but maybe find a design so they can interchange?  Just a thought.

Only just saw your reply.

No home powerwall as I rent, and don't want to upset the landlord.

Is it best to design a pack to the case, and 3D print it, or buy some of the holders there already are?
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#13
(12-15-2019, 05:52 PM)ptchernegovski Wrote:
(11-29-2019, 01:57 AM)OffGridInTheCity Wrote: I designed my cooler to use the same packs I have in my home powerwall - so I could interchange them.  Don't know if you have a home powerwall but maybe find a design so they can interchange?  Just a thought.

Only just saw your reply.

No home powerwall as I rent, and don't want to upset the landlord.

Is it best to design a pack to the case, and 3D print it, or buy some of the holders there already are?
Its all up to you.  In my case, I made a PVC pipe framework/box to keep the batteries 1" off the bottom (what if someone spilled a drink in there) and make a 'top' I could put a piece of wood to mount the inverter etc.   This all 'wasted' some space.     Here examples from @jehugarcia

I like this one in particular as a complete package and very compact with a pretty complete parts list:   DIY Inergy Kodiak Solar Generator  https://youtu.be/ZDSOIN0egMo
     (these flat cells are available from ebay.com alarmhookup  -   https://www.ebay.com/itm/42-SPIM08HP-3-7...SwBwNcv2G8

Here's one with 18650s:   600,000mAh DIY Power Pack build   https://youtu.be/bn0KtdrpoEM

Part of my trouble was just getting 'off the dime' and doing something as there are many choices Smile
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