Building battery pack, shrink wrap

[Polaris steve]

What size shrink wrap will work for 3 cells x 12 cells with foam and BMS?
110mm, 120mm , 130 mm?
Thanks

 

[harryS]

I used to buy it from this guy, and his formula is circumference of your pack, divided by 2, plus 5 mm. That seems tight, because the blue material can shrink 48%. You probably can't go wrong with 10% slop.

PVC: 2.68 inch (68mm)Width Shrink Wrap (3' L) for DIY Battery Packs

2453

www.batteryspace.com

With the shipping, it is expensive, but if you want the really good black rubberized stuff, I haven't seen that on amazon. Lately on amazon, I found I can buy the blue stuff and get free shipping.
.

 

[Polaris steve]

I used to buy it from this guy, and his formula is circumference of your pack, divided by 2, plus 5 mm. That seems tight, because the blue material can shrink 48%. You probably can't go wrong with 10% slop.

PVC: 2.68 inch (68mm)Width Shrink Wrap (3' L) for DIY Battery Packs

2453

www.batteryspace.com

With the shipping, it is expensive, but if you want the really good black rubberized stuff, I haven't seen that on amazon. Lately on amazon, I found I can buy the blue stuff and get free shipping.
.

Thanks

 

[tomjasz]

12s?

36v is 13s, 14s gets you to 52v. 3p battery pack can be a little wimpy dependent on controller/motor demand.