I did a Petzl MYO RXP and 3 AA Sanyo Eneloop NIMH 2000 mAh in regulated time test in Power level 8, 7, 6 (when bartery charge indicator isn’t flashing).
Power .. Regulated lighting .. Regulated lighting
level .. Eneloop 2000 mAh.. .. alcaline batteries (Peltz guide)
-----...