Panasonic Eneloop Pre-Charged Rechargeable Batteries

Made in Japan and keeping enough power to run anything that needs up to a D Cell these babies kick mud maker. I got a mess of them at Costco some years ago and they quickly replaced both standard and all other rechargeable batteries in my home.

I've been using them for years now with great results and they are reliable enough for me to use in my work flashlight. Further, they hold a charge and light my flashlight longer than normal batteries.