The problem is that the KD adapters are not good on currents above one amp. A bit of soldering and attaching decent copper wire should sort that out though. If memory serves, the WA1185 wants about 3 amps and is a bit brighter than the ROP.
Yes, i did read from the specifications that over 1000mAh would be a problem. I think that it could be easily mod to withstand the current strain as you described. If not, then there are other options to consider.
I had one of the KD ones, and the Fivemega one is probably nicer but not 2.3x nicer.
The alternative which is probably better is the Kiu socket but these seem to be unobtainium just now. In the UK you can get a ceramic G4 bulb holder from Maplin for an outrageous three quid
Ive got a Maglite 3D, modded with a 5xR2 module from DX. It uses 2x18650 or 6xAA NiMH. I was thinking of making something different, but I always found all the other mods pretty expensives.
If you have time I would appreciate more details of your project :)
Well it's pretty simple mod to do. You need to do some sawing and soldering but nothing too difficult.
I think that the Mag85 is definitely worth doing. It's blazingly bright for the cost.
There are a drawback to it.
No good AA adapter's are available. I tried those Kaidomain 3AA->1D but they couldn't handle the current. There are few guys who
manufacture good quality adapter's at CPF but they are pretty expensive. I use 3x18650 wrapped in cardboard. It's not very elegant solution but it did the trick.