This is my 24V/280AH Square Pack boxes I made up.
I use Chargery BMS which sits external to the box.
Here is my 280H Block Pack boxes, made with 3/4" PureBond Plywood (left over from some cabinet making I was doing).
This provides a very Snug Fit for the cells.
The cells are bound anyways to prevent expansion when being charged.
There is orange Nylon Pull Strings to help make it easier IF a bundle of 4 as to be yanked out of the box.
Lugs attached to cells have 1/4" hole to match cell bolts, 3/8's hole attaching to battery terminal on box.
* REVISIONS Oct.2020:
I am replacing the Ply top with a hinged clear acrylic top so I can see inside the packs.
Replacing BMS Harness with new 14Ga wire, as I am installing a QNBBM 8S Active Balancer into each pack that is far more Amperage output than Chargery Passive Balancing (which will be disabled). The new QNBBMS will fit into that "slot" between the cell divider and box front with room to spare front & back of the board.
REFERENCE Links to products in use:
Purebond Plywood:
https://purebondplywood.com/
Kreg Pocket Hole Jig (I use an R3):
https://www.kregtool.com/shop/pocket-hole-joinery/pocket-hole-jigs/
Chargery BMS8T:
http://www.chargerystore.com/index.php?route=product/product&path=20_26&product_id=86
Chargery DCC 300A:
http://www.chargerystore.com/index.php?route=product/product&path=62&product_id=66
QNBBM 8S Active Balancer:
https://deligreen.en.made-in-china....tteries-Pack-Equalizer-Voltage-Balancing.html
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Assembled Box below and to the right with 280AH cells BusBars & BMS harness in place.
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