Originally Posted by DrMoze
A little knowledge is a dangerous thing. Ten bucks says it is impossible under anything close to normal conditions to release that energy in anywhere close to a second, even in a poorly-manufactured battery. Even if you shorted the battery, terminal-to-terminal. So the 'caution' is way overblown.
FWIW, I bought 2 eBay batteries for my Pearl used them for over a year (rotating occasionally). Normal life, never a problem.
And yeah, sometimes OEM batteries are defective too.
My apologies. I share this coming from watching some colleagues build a battery protection system using a real-time controller and custom-made PCBs. Obviously, we used cells that had ZERO protection (the pack consists of 598 of them, to be exact).