Reedy lipo charger issue?...

[quincey]

I've got 3 sets of 8 month old reedy 7000mah 70c lipo's and I've had them from new and 2 of them have swelled,only ever balanced charged them at 3 amps and storage charged them between meetings,this is now getting beyond a joke now as I bought them to replace the nosrams that swelled as well,has anyone had the same issue with reedy lipos or does anyone think I the charger or even my truck may be causing the swelling,the charger is a bantam bc6 and my truck is an sc10.2 running 11.5 to 8.5 motors..I've got some 5 year old overlanders 5000mah 25c lipo's which are still in the same condition as when I bought them..