User manual SONY NHAA-DA

[. . . ] Repeat this a few times, and the "memory effect" will disappear. Follow the instructions below to prevent the occurrence of death or serious injury resulting from fire or explosions: To avoid the danger of leakage, internal heat build-up, or explosion, please keep the following in mind. Do not charge the batteries with any charger other than a Sony-specified battery charger. [. . . ] If the liquid leaking from the batteries gets in your eyes, wash your eyes out with clean water, then see a doctor for the proper treatment immediately. To avoid the occurrence of death or serious injury resulting from fire, please take the following precautions. Be sure to insert the batteries with the correct 3/# polarities. Do not allow any metal objects to come into contact with the 3/# terminals of the batteries. Also, do not transport or store the batteries with metal objects like necklaces or hairpins. Do not strip, peel off, or damage the outer covering of the batteries. If liquid that leaks from the batteries gets on your hands or clothing, wash it off immediately with clean water. Store the batteries out of the reach of young children. this is a characteristic of such batteries. However, if you use up the charge completely, and then recharge them, after a few times, they will again accept a full charge. To obtain the best performance from the batteries, use up the charge completely, and then recharge them fully, repeating this process several times. How to use Nickel-Metal Hydride batteries Use the batteries only after charging them fully. The batteries have only a small charge when shipped from the factory. Charge the batteries after you have fully used up the previous charge. Please be sure to charge the batteries just before you use them. If the batteries are left fully charged without being used, the charge will decrease naturally, so it is recommended that you charge them immediately prior to the time you intend to use them. [. . . ] Charge the batteries in an environment where the ambient temperature is between 10°C and 30°C (50°F and 86°F). The lower the ambient temperature, the longer it will take to charge the batteries. It is better to prepare enough batteries for two or three times the length of time you plan to use the unit. [. . . ]