Recent content by CalvinChu

To Joe Friday: I'll help you solve your head scratcher. Your laptop has a built-in protection circuit that regulates the voltage. Here's why. When a battery is used, the voltage begins to drop. Internally, the laptop electronics require voltages like 3.3V, 12V, 5V, and so on. Since a...

I've picked up a Lacrosse NiMH charger--this is the one that allows you to adjust the charging rate. It is a smart charger. One thing I found about NiMH is that if you charge them fast, they get hot. If they get hot, they are to some degree outgassing internally and once the gas escapes...

Hi Bourgeoisdude, My goal for the article is mostly to go over very lightly the basic concepts and technical terms (like V, and mAh, etc) and to crack open the black box (literally) and see what ticks underneath with one cocked at the exploding battery phenonenon. It's really by no means an...

Author here. I'm afraid you caught me in a case of some bad napkin calculations, so kudos to Pomaikai for the good catch. I'll be sending up maybe a couple of extra photos to show the series and parallel network inside the battery in more detail. So Pomaikai, I owe you a beer, and I owe...