Ni-MH cell is the abbreviation for nickel hydrogen cell, which is a recyclable battery. The positive active substance of a nickel hydrogen battery is Ni (OH)2, the negative active substance is metal hydride, and the electrolyte is a 6mol/L potassium hydroxide solution. Having 30% more battery capacity than nickel cadmium batteries, lighter than nickel cadmium batteries, longer service life, and no pollution to the environment, it is known as the most environmentally friendly battery. According to usage, it can be divided into: civilian consumer batteries, standard industrial batteries, power type batteries, high-temperature batteries, wide temperature batteries, and low self-discharge batteries.
| Electrochemistry: The chemical reactions of charge and discharge are as follows: • Positive electrode: Ni (OH) 2+OH -=NiOOH+H2O+e- • Negative electrode: M+H2O+e -= MHab +OH- • Total reaction: Ni (OH) 2+M=NiOOH + MH (M: Hydrogen-absorbing Alloy) |  |
Characteristics: • Rated Voltage:1.2V • Charging Voltage:1.4~1.45V • Termination Voltage:0.9~1.0V • Energy/weight:60-120 Wh/kg • Energy/Volume:140-300 Wh/L • Power/Weight:250-1000 W/kg • Self-discharge Rate: Generally, 20-30% per month • Charging and Discharging efficiency:66% • Number of Charging and Discharging cycles: 500-5000 Times |  |
| Advantages: • High Energy Density • Efficient at High-rate Discharges • Long Cycle Life • Wide Temperature Usage Range • Stable Electrochemical Characteristics • Pollution-free Green Battery • No Memory Effect • Lower Costs • Good Safety Performance | Applications: • Solar Lighting • Emergency Lighting • High-temperature Lamps • Car mounted T-BOX • Car OBD • E-CALL system • Electric Tools • Medical Equipment • Vacuum Cleaner • Shaver • Electric Toothbrush • Electric Toy Battery • Game Console Handle |