Нашли таки обратную сторону коробки :-)) Википедия говорит, что акумы с низким саморозрядом позначают маркировкой "hybrid", "ready-to-use" либо "pre-charged", и мой тест подтверждает это для Ready To Use из Ашана.
В ответ на: Low self-discharge The low self-discharge nickel metal hydride battery (LSD NiMH) has a significantly lower rate of self-discharge. The innovation was introduced in 2005 by Sanyo, under their Eneloop brand.[30] By using an improved electrode separator and improved positive electrode, manufacturers claim the cells retain 70–85% of their capacity when stored one year at 20 °C (68 °F), compared to about half for normal NiMH batteries. They are otherwise similar to other NiMH batteries and can be charged in typical NiMH chargers. These cells are marketed as "hybrid", "ready-to-use" or "pre-charged" rechargeables. Retention of charge depends in large part on the battery's leakage resistance (the higher the better), and on its physical size and charge capacity.