Safety has always been an issue for generic battery(li-ion). The electrolyte used in all current Li-Ion batteries is very fragile and prone to chain reactions resulting in fires and in rare cases explosions,

thats the fact 

well.. thats why its cheap.. the materials it used is different... its either u want take risk or not... some lucky enuf.. so save some $$$ and the battery was good.. but the prob is, majority is not good

jz as i mention.... but what happen to my brother's battery is its leaking... while he doing his work.. the battery somekind produce weird fluid.. kinda weird smell..then the notebook shutdown itself    and i know that heat from notebook kills the battery, so i not surprise when this leaking happens.. jz gladly ntg explosion or wat happen