Sony Nickel-Metal Hydride batteries 4-pack Micro Ni-MH 1.2 V 1000 mAh (optional)
I have more than one battery on Feb. 2012 and March 2013, furzer time ago, Sept. 2014 appointed (a total of 16 pieces). I use them both in a photo flash from Canon (430EX II). The self-discharge, I have not measured, but to feel it is low because I a