Nimh Chargers, and Nimh Battery Charger. Perfect for travel, or at home! Keep your batteries charged and ready for anything that may come up. Did you know that daniell cellin the 1800s, before the invention of the electrical generator the generator was not invented and perfected until the 1870s, the daniell cell which is also known by three other names the crowfoot cell because of the typical shape of the zinc electrode, the gravity cell because gravity keeps the two sulfates separated, and a wet cell, as opposed to the modern dry cell, because it uses liquids for the electrolytes, was extremely common for operating telegraphs and doorbells. If the charger uses a higher rate, it would have to detect when the batteries are fully charged and shut off, or risk damaging them.