EZGO TXT Lithium Upgrade

[cgtech]

They must be bundled together with rigid plates on their "wide sides". We have the plates cut to stick up above the tops of the cells to give a place to mount the plastic cover & it has holes at each corner for "handles" (they're a little tough on the fingers & it is not a one person job). The early 80ah packs didn't have the top part but did have plates.

[BobBoyce]

Originally Posted by JaxPilot

If I were to build a 32 cell pack from these 40AH modules, do I need strapping, threaded rod, end plates, or some kind of tight fitting container to house them? I've seen that the "pre-built" packs are tightly bundled to prevent bulging. Is that a requirement?

Cgtech, what did you guys do, or do you guys do, when you build new prismatic cell packs for customers?

It's a good idea to properly contain prismatic cellls. You should be able to buy the metal cages from the supplier to build your pack in 4 cell groups. Series/Parallel those as needed to build your total pack.

A buddy of mine prefers the 18650 LiFePO4 cells because the cell shape is self reinforcing, requiring no cell cage. Half the weight of prismatic but a LOT more cells to parallel to build up the ampacity. I may be old school but having that many potential failure points in a lithium pack is not a good idea IMHO. The Tesla fire in France was traced to a failed connection in a new 18650 pack. No thanks.

Bob

[JaxPilot]

Tempting. Two of these would make a kick-a$$ battery pack, if they are as legit as described.

Tesla Model S battery module, 24V, 250Ah, 5.3kWh, 444 Panasonic 18650 3400mAh