Tap waterSounds bad
What type of water......de-ionised, tap water, river water, sea water???
Though, I doubt the batteries are sealed units so no way of knowing what effect water(of any type) will have on a Li-Ion battery????
The weird thing is that mine didn't do that - they look the same as before.
There are Lithium Polymer and Lithium Ion batteries.
I left them to try and then put them to charge - no water came out when charging and the temperature was the same as normal.
I then dried again and they worked fine no problems.