User manual GP BATTERIES PB520

[. . . ] * AC100-240V for worldwide use * Charge 2 or 4 pieces of AA or 2 pieces of AAA rechargeable batteries * Charge NiMH batteries only * Termination methods - Minus delta voltage (-dV) - Safety timer - Temperature sensor * Primary and damaged batteries detection * One dual colour LED indicator * Safety guaranteed Charge 2 or 4 pieces of AA or 2 pieces of AAA batteries in pair(s) only. [. . . ] Once charging is complete, disconnect the charger from the power source and remove the batteries. For best performance and safety, charge only GP NiMH with GP PowerBank M520. For brand new batteries, 2 to 3 times of charging and usage cycles are required to optimize the batteries' performance. If batteries are stored for more than one week, always recharge them before use. It is normal for batteries to become hot during charging and they will gradually cool down to room temperature after fully charged. Remove batteries from the electrical device if the device is not going to be used for a long time. Do not charge other types of batteries such as alkaline, rechargeable alkaline or any other kind of batteries not specified as they may leak or burst, causing personal injury and damage. Do not charge batteries with different stages of charge, brands or capacities at the same time. [. . . ] , use an attachment plug adapter of the proper configuration for the power outlet. [. . . ]