MIT study shows plunge in lithium-ion battery cost over the last 10 years

nismo91

Posts: 1,110   +149
I'm doing my part by repurposing 18650 batteries from broken laptop batteries into bright LED torchlights. it's hard to believe that 18650 batteries from 2008 laptop can still power up a flashlight in medium brightness for over 2 hours.

I've thrown out many emergency lamps and bulb torchlights which use 12V VRLA batteries, D batteries etc because when it's time to replace the batteries, I quickly realized that using 18650 batteries are the logical choice.

since the newer laptops no longer use 18650 cells, I have to get my 18650 from something else. over the last 5 years I only purchased powerbanks which uses 18650 cells so that I know for sure I can repurpose the cells for more torchlights. I mean a 4-yo powerbank usually could still work but it lacks quick-charge or type-C input. or sometimes the usb port is loose. time to break the plastic and repurpose all 6 cells.

it'll be interesting to see if someone found a way to mass-repurpose a portion of 18650 cells from retired electric cars. who knows if that'll have a slight effect in driving down the price of new lithium batteries. I personally would still trust a Samsung, LG or Sanyo cells coming from 3-yo laptop than a new cheap 18650 cell from China.
 

bexwhitt

Posts: 528   +218
I'm doing my part by repurposing 18650 batteries from broken laptop batteries into bright LED torchlights. it's hard to believe that 18650 batteries from 2008 laptop can still power up a flashlight in medium brightness for over 2 hours.

I've thrown out many emergency lamps and bulb torchlights which use 12V VRLA batteries, D batteries etc because when it's time to replace the batteries, I quickly realized that using 18650 batteries are the logical choice.

since the newer laptops no longer use 18650 cells, I have to get my 18650 from something else. over the last 5 years I only purchased powerbanks which uses 18650 cells so that I know for sure I can repurpose the cells for more torchlights. I mean a 4-yo powerbank usually could still work but it lacks quick-charge or type-C input. or sometimes the usb port is loose. time to break the plastic and repurpose all 6 cells.

it'll be interesting to see if someone found a way to mass-repurpose a portion of 18650 cells from retired electric cars. who knows if that'll have a slight effect in driving down the price of new lithium batteries. I personally would still trust a Samsung, LG or Sanyo cells coming from 3-yo laptop than a new cheap 18650 cell from China.
no modern ev uses 18650 cells, tesla used to but they have moved to a bigger form form factor