Didn't see you put the 18650 in the flashlight. I tried replacing the 3-battery holder with an 18650 and it was too long to fit. Otherwise got some good info here, thanks.
I'm in the process of cleaning about 600 cells, And I have also decided not to remove the nicklel strips, No matter how good your cutters are you cannot get them completely clean without grinding on them and the contact points are much flatter Leaving the nickel strips attached. I don't think that doubling up on the cap insulator is a good idea.
Only harvested like around 20 and also stopped doing that. Though you can use a dremel with a stone tool but that removes the anti rust coating and leaves nickel dust in the battery which could probably be dangerous.
Hi I salvaged 6 batteries from my laptop battery pack But 2 of them drop voltage after charging. It happens to be 2 first batteries from the pack and I removed them by force. I think i damaged them :(
it is a common failure with lithium cells and is typically the main reason the battery stops taking charge, the cells gets out of balance and the BMS shuts it down. when you salvage these types of cells you should always fully charge and then let them sit for a week or two and check if voltage drops. all cells that keep losing voltage over time for days should be discarded. it is common if two cells is parallell that both fail because the bad cell drops the voltage too low on the good cell and ruin that too. good cells will not lose any mentionable voltage after they settle down at a specific voltage. but it is important not to measure this right away after it´s charged because the voltage must settle for a while before you have the cell in balance. but if the voltage keeps dropping slowly or steadily day after day it's a bad cell
![Cutting open an LG 18650 battery for science [ amateur video warning ]](http://i.ytimg.com/vi/per8ybI55bI/mqdefault.jpg)
Didn't see you put the 18650 in the flashlight.
I tried replacing the 3-battery holder with an 18650 and it was too long to fit.
Otherwise got some good info here, thanks.
I'm in the process of cleaning about 600 cells, And I have also decided not to remove the nicklel strips, No matter how good your cutters are you cannot get them completely clean without grinding on them and the contact points are much flatter Leaving the nickel strips attached. I don't think that doubling up on the cap insulator is a good idea.
Only harvested like around 20 and also stopped doing that. Though you can use a dremel with a stone tool but that removes the anti rust coating and leaves nickel dust in the battery which could probably be dangerous.
Great idea to cut tabs - as long as the tolerances fit with the additional width of the new nickel strip.
Thanks for the advice
Hi
I salvaged 6 batteries from my laptop battery pack
But 2 of them drop voltage after charging.
It happens to be 2 first batteries from the pack and I removed them by force.
I think i damaged them :(
it is a common failure with lithium cells and is typically the main reason the battery stops taking charge, the cells gets out of balance and the BMS shuts it down. when you salvage these types of cells you should always fully charge and then let them sit for a week or two and check if voltage drops. all cells that keep losing voltage over time for days should be discarded. it is common if two cells is parallell that both fail because the bad cell drops the voltage too low on the good cell and ruin that too. good cells will not lose any mentionable voltage after they settle down at a specific voltage. but it is important not to measure this right away after it´s charged because the voltage must settle for a while before you have the cell in balance. but if the voltage keeps dropping slowly or steadily day after day it's a bad cell
Good tips
Didn't learn anything new. For me it's 11 minutes of my time. Give them back! 😀
I made it 2 minutes. TORTURE!
The OP needs to drink drink a gallon of energy drink before making video.
I fell asleep.