Panasonic AA eneloop per ready-to-use NI-MH AA Battery BK-3HCCE / 4BE (2,450 mAh, 4-pack) - (Accessories)
I use two sets set Eneloop Pro in a 10 Guide Plus, a so-called. Power Bank, which is recharged by solar. The Eneloop I conditioned before the first use in a MEC AV4m diagnostic charger and thereby a usable capacity per cell was determined from 3.7 Wh