Hi!
I am new here, but I have been reading for a long time.
Recently I see more and more people complaining about issue, that 18650 from laptops are harder and harder to get. What do you think about flat batteries? I have a bunch of reclaimed flat batteries from laptop packs, some are lithium-polymer pouchbut I think that most are lithium-ion metal-case cells.
Personally, whey it is harder to get 18650 I believe that flat cells are good alternative. They have safety features like vent holes and very conveniently most have integrated, resealable theremo-fuse that opens when you pull too much current and fuse heats.
Two things that I do not like - metal cases are positive instead of negative like 18650 cell shell, and it is almost impossible get datasheets for them.
Photo: one Samsung SDI cell from a loot of ~30. Tested a few, some worn out with ~1800-2100 mAh, some good ~3500 mAh. Didn't find datasheet, so I do not know what nominal capacity is.
I am new here, but I have been reading for a long time.
Recently I see more and more people complaining about issue, that 18650 from laptops are harder and harder to get. What do you think about flat batteries? I have a bunch of reclaimed flat batteries from laptop packs, some are lithium-polymer pouchbut I think that most are lithium-ion metal-case cells.
Personally, whey it is harder to get 18650 I believe that flat cells are good alternative. They have safety features like vent holes and very conveniently most have integrated, resealable theremo-fuse that opens when you pull too much current and fuse heats.
Two things that I do not like - metal cases are positive instead of negative like 18650 cell shell, and it is almost impossible get datasheets for them.
Photo: one Samsung SDI cell from a loot of ~30. Tested a few, some worn out with ~1800-2100 mAh, some good ~3500 mAh. Didn't find datasheet, so I do not know what nominal capacity is.