When to remove batteries?

[LowlyAssassin]

As theotf said lithium IoN batteries don't leak,
If they are going to do anything it'll be
Work
Not work
Explode

Not necessarily in that order, but exploding batteries are extremely rare, unless.you go poking it with a sharp pokey thing or exposing it to extreme temperatures then expect some exploding and deadly gases (we had a couple of exploding batteries at work, and the whole building of about 400 people had to be cleared out until the tiny bit of gas had been dispersed by air con, they where fun days with hour long breaks because things blow up



Edit
I had never thought of batteries, I leave my Xbox 360 play and charge batteries completely empty and flat and not connected, I don't know how much of a problem this males

[fiirmoth]

Thank you very much for the replies!! I didnt realize that these should all be Lithium Ion and that they shouldnt leak. That makes me feel much better. Thank you all for the replies.