On 8/26/14, 10:30 PM, micky wrote:
Do coin batteries ever leak?

In a survey of 3,000 watches with dead silver oxide batteries, 40% had
leaked. They contain zinc and lye, which can produce hydrogen, which
can burst seals. High-drain batteries have thinner separators and are
more likely to leak. Energizers are the least likely to leak.
Unbranded cells are the most likely.

Lithium cells won't leak from electrolysis.