This lamp at maximum power produces in access of 3500 lumens as a mixture of beam and bare emitter.

My thinking on this new model has gone along the lines of producing a lamp without the front extension and therefore much smaller, and also dispensing with the old models switching arrangement to produce a lamp that is a lot more user friendly.
To this end I have constructed a lamp that runs on 12 volts rather than the previous 8V. The battery is a 10 ampere hour, 12 cell, 4 in parallel X 3 in series belt mount pack. It balance charges through a 4 way plug in the top, and has the same built in voltmeter as the 8Volt. It’s just a little taller to take the 2 extra cells which are laid flat. The LED layout is in series arrays of threes, so can be switched by a single driver through various modes. Gone is the ‘all the way forward, all the way back’ internal switch. An extra array is switched by an external switch built into the cable.


There are 3 XM-Ls in series behind the same small reflectors as the old MagnumStar and driven from the same basic driver as used in the Trigon to a maximum current of 2.75 amps to give 2625 lumens.
There is another 3  bare XM-Ls, again with 1 driver being driven up to 2.5 amps to give 2400 lumens, plus 2 bare XP-Gs at about 1.3 amps to give about 830 lumens, total 3200 lumens of flood.

The XP-Gs are switched from a small light and waterproof plastic switch box mounted into the cable. This means that the 2 XP-Gs can be switched independently of the switch on the lamp, making it very user friendly.

If switched together with the beam the total output is almost 3500 lumens.

The drivers are the same as I use in the Trigon and modded to run on 12V, they fill the back of the lamp. They each have 3 modes. Beam “Standard” is set to 0.11 amps and produces about 160 lumens for a battery hit of 1.4 watts, pretty good, as if it makes any difference with that battery! Middle is about 750 mA and you know the rest.

The bare emitters are different and has its lowest mode set right down to 0.08 amps.
There is also the emergency light as in the other lamps.

I have not bothered with a low voltage warning as the belt mount pack has its own built in voltmeter.
 

This lamp has two thermal conductors, an aluminium based one same as the Trigon, and also a copper based one similar to the previous MagumStar, this caused the heat generated to be conducted to the external heatsinks very quickly.

In use the lamp is very user friendly and although as heavy as the previous model its smaller size places its centre of gravity further to the rear. This makes it more comfortable to wear. The battery comes across as particularly sturdy, in use even after a trip with a lot of use on the power settings, the capacity has been hardly dented.

Package: Lamp with side switch, 12 cell 10 ampere hour 12V battery and dedicated charger. £250 plus post and packing.

Below is an exploded view of the new lamp

USEFULNESS?

Accepting that the usefulness of a lamp of this power is somewhat questionable, the main useful purpose is for photography and video. It is possible to takes photos underground without any flash

Below are pictures taken using the earlier model, the new model has a higher output of flood

Below is a photo of Ystrad Einion waterwheel taken on daylight mode, Fujifilm S9600, ASA 100 F5.6 at 13 seconds. No other lighting.

TABLE OF FIGURES, PRICE ETC TO BE UPDATED AFTER PROLONGED TESTING OF NEW LAMP

This lamp is now in production