Turnigy LiFEPO4 packs

[suicideneil]

At the extreme end of the scale you could remove the shrink, paint on some plastidip or silicon sealant at each end of the pack, including over the base of the wires, allow it to dry a little then apply some fresh shrink wrap- it will form a water tight seal pretty well, but it does nothing to waterproof the main power connectors or the balance plugs.

If you want waterproof, go back to NimH