The batteries are pre-charged and ready for use immediately after purchase. As with primary batteries, their nature means that they remain charged for a very long time even when not in use. Due to the low self-discharge, the charging capacity is still up to 80% after 1 year without recharging. These rechargeable batteries combine the convenience of a disposable battery with the performance and cost advantages of a rechargeable battery. The AAA battery with 750 mAh can be recharged up to 1600 times, the AA battery with 1900 mAh up to 1000 times.

- low self-discharge

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