Little buzzing...
 

In my ib4200's, i get this little buz/sizzle sound in both of my packs, (1 cell on each side) it happened today, it was where one part of the cells shrink was ripped off from, and than, a bit of liquid came out, i wiped it away and i am now wondering, what is it? Not alot of liquid came out, just 3-5 drops.

Its battery acid. I had that happen to one of mine to. They seem to do just fine though.

Yep. The spot that did that, dried up and stopped buzzing. Its all good now.

So it's ok if they leaked a bit of liquid? One of my gp3300 cell's did that to(new, solderd to older 6 cell pack) and now trying to get it back alive after reading this. Is it safe to do so or should I rather order a new cell?

Im not really sure, but the cell seems fine, and its been charged/discharged like 3-4 times and its fine.

Trying never hurt nobody. Charging it a few time's on 1 amp.