linear is one constant charge at one amperage
pulse is like it charge for a few seconds or so at a time then stops and begins again from my understanding...i dont know if the short stops result in a small discharge or not though
i think the pulse charge was meant to help older cells come back a little if they are tired or havent been used in awhile...kinda like a tiny zap...sorry i cant help more...maybe someday can clear it up for you
