I bought 2 packs of TruTest Supreme (5 batteries, vintage) to replace a lightbulb that was still working, hoping to make it a little stronger. The new battery was the perfect size and looked like a duplicate - perfect fit! I took out the old one, put the first new one in, turned it on, it flashes and nothing! It clearly exploded, as I noticed when inserting the second new one. I pulled out the freshly blown one, put a second new one in, turned it on, blinked, and then nothing! It was definitely