Lithium in DR Slimline canister?

[DaveP]

Anyone using a lithium pack (Li-Ion rechargeable etc) in their DiveRite Slim Line canister?
If so what size pack is it? Burn time?

Thx,
Dave

[350xfire]

Assuming this is an HID you can run 11.1V LiIon... Also assuming a 10W HID current draw should be around 1 amp (20% added for losses)... You could build a 18650 6pack 3s2p and get about a 3-4 hour run time. You may be able to get a 9 cell pack 3s3p in there for about 30% more run time...

It all depends on which cells you use... There are some really crappy cells out there. Go with 2400-2600 mah cells and don't buy the 2 for $5 ones. Get the ones in the 2 for $10 range.

[Superlyte27]

How are you guys welding these together?

[DaveP]

Only 3 to 4hrs?
My current DR 10watt HID gets 3 1/2hrs in a wreck canister with a homebuilt 4.6amp gel cell pack.

Looks like this might fit, but I was hoping for more (maybe the voltage is a little high?):
http://www.batteryspace.com/li-ion18...submarine.aspx

If going with Nimh, I hear the Sanyo pack is worth the extra $$ ?
http://www.batteryspace.com/nimhbatt...vinglight.aspx

http://www.batteryspace.com/nimhbatt...idhalogen.aspx

Like to be able to use the same battery pack for HID and LED.
Thanks,
Dave

[350xfire]

I professional builder that CD welds them together.

Run time depends on the quality of the batteries... The ones I get are usually about 2400mah so you could get about a 4800 mah pack which would run about 4 hours with 6 cells or 6 hours with 9, if you can fit 9 in.

If you don't use your light often, I recommend LiIon as it does not lose capacity as much from sitting around.

[Superlyte27]

I was lied to. I was told you couldn't weld on Li Ion batteries

[DaveP]

So the life span of lithium is better than Nimh?

[350xfire]

Definitely! As an example, I have both and I let a NiMH pack sit around that should have been 10,000mah. I decided to recharge and test and the first time I got 2000 mah. I cycled it 6 times and got it back up to 6500 mah. I did not test it when it was brand new so I don't know if it was 6500 or 10,000 for sure though. I have let LiIon sit for months and they lose very litthe charge over time and they come back to spec pretty quick.

[350xfire]

Well, that depends.. You may not have been lied to. The PROTECTED cells have a PCB mounted in the back that will not allow CD welds. You need to get unprotected cells, weld them and then use a PCB to protect the whole pack. I would not use protected cells in a pack configuration anyway since too many points of failure. Better to use 1 for the pack!

[Superlyte27]

Well, when it's time to get batteries for my 21w Halcyon Explorer, i'll get with you.