Characteristics of Nickel-Metal Hydride (Ni-MH) battery

Features
Rechargeable Ni-MH batteries are the Secondary ones that use alkaline liquor as electrolyte .It uses Nickel hydroxide as the positive electrode and hydrogen-absorbing alloys as the negative electrode. This type of battery is defined by IEC285 as Alkaline Sealed Cylindrical Rechargeable Battery. Ni-MH batteries have about twice the energy density of Ni-Cd batteries and a similar operating voltage as that of Ni-Cd batteries.

1. Green Energy
Ni-MH batteries are free of Cadmium and mercury. They are an environmental friendly chemical power source.

2. Free Maintenance

Simple operation like primary batteries but avoid overcharging and overdischarging (-20?~+60?)

3. Similarity with Ni-Cd batteries
These batteries have similar discharge characteristics to those of Ni-Cd batteries.

4. Double the energy density of conventional batteries
Renon Ni-MH batteries have approximately double the capacity compared with Renon’ standard Ni-Cd batteries.

5. Cycle life equivalent to 500 charge and discharge cycles
Like Renon Ni-Cd batteries, nickel-metal hydride batteries can be repeatedly charged and discharged for about 500 cycles(IEC 61436 charge and discharge conditions).

6. Rapid charge in approx. 1.2 hours
Renon Ni-MH batteries can be rapidly charged in about an hour using a specially designed charger.

7. Excellent discharge characteristics
Since the internal resistance of nickel-metal hydride batteries is low, conditions for high-rate discharge up to 4CmA is possible, similar to Ni-Cd batteries. For the high capacity type battery, they can discharge at 5~10CmA.

Applications

Intercom, cordless phone, Measuring tools, calculator, remote control auto and other power toys, Photographic light, searchlight, lawn light, power shaver, recorder, Earphone stereo system, CD player, radio, DVD, MP3, Digital Camera and other digital products,.Measuring tools, power tools: electric drills, screwdriver and electric saw, electric auto, electric planes, electric bicycle ,other equipment in high power discharge, etc.

Curve of Charge, Discharge, Storage, and Cycle Life characteristics