Hmm your review says this: Lithium-ion - fastest growing battery system; offers high-energy density and low weight. Protection circuit are needed to limit voltage and current for safety reasons. Applications include notebook computers and cell phones

Does that mean even if I find a Li-ion battery at the same or very close voltage output as my curretny battery pack supplies to my Dinotte that it wont work without protection circuts?

I think that just means if the voltage is too high... but now im confused.