No worries, it seems manufacturers are more pressed to get as much mAh into the least amount of space than to add protection. 4.2 is good, so if you dont sleep/ leave home it should be ok.
There's these chargers
Cellphonefocus: Germany Plug Universal Mobile Cell Phone Battery Charger, Universal Battery Charger, Cell Phone Charger, Mobile Charger, Travell Charger that have charge protection, so you cant go so wrong.
On a tangent, charging multiple protected batts in parallel will work properly as each batt will stop when full and the charger will keep going til the last batt is full? Am I right with this? I want to charge multiple 14500's with a single slot charger. Cheers for input on this