I have just the opposite experience. My current setup: cheap charger (sub £20, http://www.euroffice.co.uk/i/lcg2/Energizer-Maxi-Battery-Charger-with-4x-AA-2000m

I have just the opposite experience. My current setup: cheap charger (sub £20, http://www.euroffice.co.uk/i/lcg2/Energizer-Maxi-Battery-Charger-with-4x-AA-2000mAh-Batteries-Ref-632325 http://www.euroffice.co.uk/i/lcg2/Energizer-Maxi-Battery-Cha...) and simple rechargeables (http://www.amazon.co.uk/Uniross-AA-2700mAh-Performance-Batteries/dp/B0013IOCO8/ http://www.amazon.co.uk/Uniross-AA-2700mAh-Performance-Batte...). I have 4 batteries and recharge them every two days and rotate. They last around 3 days (6hrs) on this torch http://www.fenixtorch.co.uk/led_torches/fenix-ld20-r4.html http://www.fenixtorch.co.uk/led_torches/fenix-ld20-r4.html. It bit over a year of nearly a day-to-day use and no degradation in power. They seem to behave just as they did a year ago. Perhaps the accurate measurements would show differently, but +-10mins on a 6hr scale is not that important.