Source for battery cap covers?


What sources have people used for the overlying battery cap covers? Didn't notice it on the bill of materials.




I bought them in a local "rubber store" together with the O-Rings


In case anyone is looking for parts in the United States:

Stockcap ( has a nice selection of caps and plugs, I’ve ordered a few and will update when they come in.



Hey Chris,

Here's where we sourced the end caps for the kits:


hi all. just a question. how are the end caps sealed against the water pressure

are they just a tight push-on fit and the water pressure pushes then hard to seal?

also, how are the battery wires potted? are details?

-thanks andrew