Old 07-30-2008, 02:14 AM #1
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Default What type of 18650 do you use with the Flexdrive

I know their all 3.7V But what kind do you use with the FlexDrive? There are 1800ma, 2400ma, and 2500ma. And all 18650's are rechargeable right?

http://www.dealextreme.com/products.dx/category.400


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Old 07-30-2008, 02:25 AM #2
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Default Re: What type of 18650 do you use with the Flexdri

Yep, all 15650's are rechargeable... All of them will be able to deliver the amount of current required by the flexdrive... The only difference is how long it will last per charge. You've missed the H on the end of "mAh".. which stands for "hours", as in "milliamp-hours". As in, how many milliamps it will be able to deliver for an hour, per charge... if your flexdrive is getting some 90% efficiency, and your laser is drawing 300mA, it's drawing 330mA from the battery... a 3300mAh battery (for example) would last ten hours at that draw (theoretically).
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Old 07-30-2008, 03:02 AM #3
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Default Re: What type of 18650 do you use with the Flexdri

Yep, what he said^. The more capacity, the better. Many companies misquote this value, however, since very few of us will bother measuring the capacity of a battery.
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Old 07-30-2008, 04:07 AM #4
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Default Re: What type of 18650 do you use with the Flexdri

Very true [smiley=smiley_up.gif].

So, the higher Mah the better. And these are the same size as AA's right? And the same size as two CR123's.

So which is the better brand?

UltraFire is $5.05, and says they are 2400Mah.
TrustFire is $5.00, and says they are 2500Mah

http://www.dealextreme.com/products.dx/category.400

I get the idea they are all the same. And its just a competition between 2400, and 2500Mah. And that there are only 3 types: 800Mah, 1800Mah, and 2400/2500Mah

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Old 07-30-2008, 06:04 AM #5
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Default Re: What type of 18650 do you use with the Flexdri

No, 18650's aren't the same size as AA's, they're 18mm in diameter, 65mm in length... check a ruler, that's huge. I think AA's are 14mm in diameter and 50mm long, hence they are 14500 lithiums.

Also, two CR123's are wider than an AA (though about the right length)... an N battery is half an AA.
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Old 07-30-2008, 03:56 PM #6
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Default Re: What type of 18650 do you use with the Flexdri

Quote:
Originally Posted by pseudolobster
No, 18650's aren't the same size as AA's, they're 18mm in diameter, 65mm in length... check a ruler, that's huge. I think AA's are 14mm in diameter and 50mm long, hence they are 14500 lithiums.

Also, two CR123's are wider than an AA (though about the right length)... an N battery is half an AA.
So generally you couldn't use a 18650 battery in place of two CR123s. (aside from the fact you wouldn't get as many volts)
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Old 08-01-2008, 07:55 AM #7
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Default Re: What type of 18650 do you use with the Flexdri

Found a decent brand of unproteced Panasonic brand, will be much better then the cheap Chinese one, and more accurate as far as their output.

http://www.eliteled.com/products/acc...thium-ion.html

I am getting these for my green DX200 baton style laser which take 18650 unprotected batteries

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