This is a top quality professional battery of an exceptional quality which in our opinion is the best high capacity AA low self discharge battery with anti-leakage technology currently available. The performance of these batteries is superb and they represent excellent value for money in every respect. Absolute top quality, Made in Japan. ** A better high capacity low self discharge AA battery simply does not exist **Rare metal coat that keeps the power after long storageRare metal coat is able to keep lower impedance for long storage. Dischange at DSC after 10years on storage (HighPower type AA)Cutting-edge technology prevents battery leakageBy adopting rare metal coat , gas generation inside the battery was suppressed, and leakage prevention performance was further improved.Great performance and reliability with anti-leakage technology.Technology for Anti-CorrosionThe perfect battery for any device (low to high drain).