Cycle Of Discharge Can Not Activate The Use Of Nickel-hydrogen Batteries

Ni-MH battery for the main feature is a small internal resistance

, discharge current, so now many digital cameras use 1.2V nickel hydrogen batteries, especially 3v-powered digital camera, using two NiMH batteries Only when the voltage is 2.4V, the camera boot up when the instantaneous current can be more than 2A, then if the internal resistance of the old NiMH battery will result in higher transient voltage drop detection circuit cameras will be mistaken for lack of battery power will cause Battery power can not be completely exhausted itself, or fail to boot.

I had several sets of NiMH batteries has been in use for nearly two years, after the boot is now only half full electric power grid, when placed on a week later will appear with the situation can not be switched, but the battery can be normal in other devices use. The research shows that older nickel-metal hydride batteries used in a long time, the internal electrode will produce oxide battery internal resistance increases, so nickel-metal hydride battery that no longer apply to the larger starting current digital camera. How to reduce the internal resistance of the old NiMH battery is the key to activate the nickel-metal hydride batteries. In use for that type of resistance has been found to increase the nickel-hydrogen batteries that can activate a large current discharge.

Specific approach: first the normal Ni-MH battery charging, and then two Ni-MH battery at the hands chained, with a digital multimeter transferred to 20A current file, use the form document directly to the Ni-MH battery positive and negative terminal, this time within the digital multimeter 20A current shunt resistor and the table files that document lead nickel-metal hydride battery as the load resistance is small only a few zeros in Europe, the observation of direct current meter will be from small to big and stability in 4A above, Ni-MH battery will gradually heat, when sense the temperature of NiMH batteries is about 40 degrees when to stop discharge, Ni-MH battery discharge temperature returned to normal again, repeated every cycle until the voltage of NiMH batteries down to 1V when the discharge process is completed, then give Ni normal hydrogen battery charge, usually through a post-discharge NiMH battery that can be used normally. If you can not normally use on the discharge cycle again, after the third cycle of discharge can not activate the use of nickel-hydrogen batteries also the throw. This method does not apply to the new nickel-metal hydride batteries, nickel metal hydride batteries may shorten the life span. Laptop battery

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by: combattery84

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