Great! But not 195 lumens.

Now of course you have to say that the reflector and the whole lamp were never designed for LED operation and therefore the cone of light is not as homogeneous as in the LED Lensern. But that's not the fault of the LED module, although it even better, but could also make it more expensive certainly.

I've previously had in the Maglites alkaline C-cells, because that are not permanently needed and the large batteries would die there really only useless to himself. Now with the LED also rich Mignon / AA cells in the adapter to operate with reasonable duration. These include:

Because I was curious I've built with an Arduino, a display and a photoresistor a test setup to detect the battery life in lighting time with some accuracy. It stops the timing when the light intensity falls below about 90% of the maximum. After that, the brightness falls off more quickly and the batteries run increasingly Risk of total discharge to be damaged.

On this basis I have with Sanyo eneloop AA cells a duration of 5:28 hours and with IKEA mignon cells with low self-discharge reaches 6:25 hours. Both couples had nominal battery 2000 mAh and reach the relatively accurate. The eneloops were already a couple of weeks .... From this then a consumption of about 800 mWh calculated (2.4V x 2000 mAh / 6 hours) - it can be concluded that the LED module with 2 cells in series in the life produced no lumen 195, but at best half. But as well as that's about as bright as the Originalbirnchen, it's enough for me to have pointed to the fact.

In fact, one can with 2 mignon cells have smaller bulbs or equal in size to a LED Lenser with 18650 cell - I have indeed. But the Maglites are made to last and the last with the help of this upgrade module a few years longer. And with two baby cells (as battery to 6000 mAh) can perhaps even the 20-hour mark crack ...