Old 07-26-2011, 09:04 AM #1
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Default Something i did not know.

Alot of lasers take 18650 lithium Batteries, turns out these are inside 90% of laptop Batteries, i was just about to order some then i seen this vid ‪Laptop Battery Repair / Rebuild : Lithium Ion Cells 18650‬‏ - YouTube

i knew i kept that old broken laptop for a reason


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Old 07-26-2011, 10:47 AM #2
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Default Re: Something i did not know.

I bought an 18650 battery for my laser though I had about 20 18650s lying around from laptops. I did this incase I wanted to sell my laser and give the client a brand new battery. But for testing of lasers I always use the Li-ion batteries from the laptops.
Thanks for nice addition to the forum :P
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Old 07-26-2011, 11:08 AM #3
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Default Re: Something i did not know.

just remember that these 18650 ( iirc actually 18500 or 18600 ) are not protected, so be carefull with over/under charging them.
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Old 07-27-2011, 07:59 AM #4
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Default Re: Something i did not know.

Also those batteries have a shelf life. If they are 4 or 5 years old they are pretty much at the end of their usefulness.
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Old 07-28-2011, 03:15 PM #5
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Default Re: Something i did not know.

Whats the deal with the mAh though will a laptop battery work regardless of that or does it need to be above or below a certain mAh?
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Old 07-28-2011, 03:58 PM #6
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Default Re: Something i did not know.

it will work with any mAh rating, it just holds its charge longer or shorter depending on the cells
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Old 07-28-2011, 06:25 PM #7
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Default Re: Something i did not know.

my laptop would not hold a charge, but when i ripped apart the battery, all the 18650 batteries seem to work fine.....
i now have them scattered all throughout the house and my laptop has to stay connected to the charger because i'm too cheap to buy a new battery.
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