Anyone use the new eneloop battery fm sanyo, is 2000mah, please comment on the performance of the battery for any user, heard it store 80% of power inside a equipment unuse for 1 yr, is it true. Is it good to use on flash? Where to get for a good price? thinking of replace all my current battery(sanyo 2500mah)which alway got discharge problem after change.Any place to get these batteries cheap...