NiCd vs NiMH in a Mag85

[TheInvader]

Since a NiCd can provide a LOT more current than an equally sized NiMH, would a Mag85 be brighter with nicad's?
Runtime isn't necessary as I only use my lights in pulses of 1-2 minutes.
Nicds are used in 50+ amp RC stuff, while only good quality nimh can only provide 20 and under amp loads.
I also understand that nicd is much more durable and takes overcharging a bit better than nimh, and doesn't sag as much because of the ampacity.

 

[lctorana]

I would say not, because good NiMH (e.g. Eneloops in AA size) hold up a slightly higher voltage under load than NiCads, hence driving a higher current through the bulb.

However, in extreme use (like those who use 600W sealed beam landing lights, your theory definitely comes into its own.

But those high-current cells are not AA size. In my experience, AA NiCads are nothing special.

 

[Billy Ram]

The 1185 bulb only draws 3.3a. I've tried high current batterys like Titanium 1800s and it didn't make any differance. Most AA batterys provide all the current the little 1185 can use.
Billy

 

[TheInvader]

Thanks for your responses, but I'm about to use Duracell LSD's, with black tops.
They are suspected to be rebranded Rayovac Hybrids, which hold up to 6 amps at about 1600 mAh, and 4 amps at about 1750-1800mAh.

Would those make a huge difference versus nicads?

also: I saw in RadioShack the other day I saw this: http://www.radioshack.com/product/index.jsp?productId=2103206
Would that work in a hotwire mag setup? They look like sub c's?

 

[lctorana]

...I'm about to use Duracell LSD's, with black tops.
They are suspected to be rebranded Rayovac Hybrids...

Would those make a huge difference versus nicads?

You'd be about 100 lumens better off with the LSDs, IMHO.

also: I saw in RadioShack the other day I saw this: http://www.radioshack.com/product/index.jsp?productId=2103206
Would that work in a hotwire mag setup? They look like sub c's?

looks like 8 AA cells to my eyes, but more to the point, I can't imagine how this pack could fit in a Maglite. Some kind of lantern, yes, but not a Maglite. The Maglite tube is round.

 

[apete2]

If it is like other radio shack packs, the cells will not be button top. Those are AAs, the 7.2v packs are sub c

 

[fivemega]

Nicds are used in 50+ amp RC stuff, while only good quality nimh can only provide 20 and under amp loads.

Only larger cells like Sub C NiCad can provide such huge continuous current which you don't rally need for M*g85 beside, NiMH sub C batteries will perform very well with much more capacity.
Biggest problem of such a setup is initial spike which kills the bulb specially resistance fixed or hot off the charger.
What you want is regulated 12 Eneloops in quad bored 3D :thumbsup:

 

[TheInvader]

Actually I'm looking to hone out my 3D, and rewrapping my batteries to save on the boring.
Or simply getting a 2D and honing that out, putting in 8 AA nimh's and putting in a sub C to get my needed 10.8v for an 85.

 

[TheInvader]

Well I've decided to make a Mag458....

I guess I'll go with some Elite 1700's, as they hold 10 amps without a flinch.

 

[Billy Ram]

Well I've decided to make a Mag458....

I guess I'll go with some Elite 1700's, as they hold 10 amps without a flinch.

I highly recommend Elite 1700s in the m*g458:twothumbs Titanium 1800s will work but you'll be loosing current and I had 2 out of 16 leak on the first charge:thumbsdow "This makes a mess" Run time is about the same with either one. "About 8-9 mins" 19.2v. @ 10.5a. = 9-10K bulb lumens:rock:
Billy