Yes, the nominal voltage of the nickel-metal hydride battery is 1.2V; When the battery is fully charged, the voltage is generally 1.43~1.45V, which varies from manufacturer to manufacturer. The way to charge the rechargeable battery is generally constant current charging and constant voltage charging, 1.5v voltage can be charged to nickel metal hydride, and can be filled.
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Nickel-metal hydride battery is composed of hydrogen ions and metal nickel, energy storage than nickel-cadmium battery 30% more, lighter than nickel-cadmium battery, longer service life, and no pollution to the environment. The disadvantage of nickel-metal hydride batteries is that the price is much more expensive than nickel-cadmium batteries, and the function is worse than lithium batteries.
The \"metal\" part of a nickel-metal hydride battery is in practice a metal hydride.
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Used in the manufacture of nickel-metal hydride batteries, they are mainly divided into two categories. The most common are AB5, A mixtures of rare earth elements (perhaps) plus titanium (Ti); B is nickel (Ni), cobalt (Co), manganese (Mn), and (perhaps) aluminum (Al). The \"multi-component\" electrode of some high-capacity batteries is mainly composed of AB2, where A is titanium (Ti) or vanadium (V), B is zirconium (Zr) or nickel (Ni), plus some chromium (Cr), cobalt (Co), iron (Fe) and\/or manganese (Mn). All of these compounds perform the same role: reversibly forming metal hydrides. When the battery is charged, hydrogen ions (H) in the potassium hydroxide (KOH) electrolyte are released and absorbed by these compounds, preventing the formation of hydrogen gas (H2) to maintain the pressure and volume inside the battery. When the battery is discharged, these hydrogen ions will return to their original place through the opposite process.