Gregor Scott

I use salvaged 18650 cell from laptop packs. Most of them have higher internal resistance but lots of usable life left. It would be very very useful to have a...

All lithium cells are ok down to 3.0V most are fine down to 2.5V occasionally at higher discharge rates. The problem comes when you have unbalanced cells with no protection...

It's being unbalanced that really screws cells up. A cut off of 3.0V is safe for li-po and li-on which are fundamentally the same chemistry just packaged differently. Again the...

There is a big difference in the discharge cut off voltages on a 5S tool battery and a 5S hobby lipo. Lipo's need to be protected more than other batteries...

most lithium power tool batteries actually have cut out voltages at 2.5V. https://akkuplus.de/mediafiles/Datenblatt/Panasonic/Panasonic_NCR20700A.pdf, that is the battery in the new Dewalt packs. almost all Li-ion 18650 cell can handle 2.5V...

Syonyk's is one of my favourite blogs! BTW the new 20700 cells in the Dewalt packs are amazing. They come from the same pedigree (Panasonic) as the cells Tesla makes...

I doubt DeWalt fulfil many warranties on their batteries. Old "dead" tool packs are a great place to get free high drain Li-ion cells for projects that need them. Actual...