For home use I've moved to the 26650 Lithium LiFePo4 Cells.

http://www.amazon.com/KINGSOLAR-trade-3300mAh-Rechargeable-Phosphate/dp/B00QR7X32W

Using a generic 15 CREE XM-L T6 4x26650 cell torch.

On the lowest setting the torch gives about 250-300 lumens for about 25-30hrs of runtime.

Does anyone out there make a good quality 4x26250 cell Cree MT-G2 flashlight?