subject: Memory Effect For Trouble Because The Battery Capacity Loss Occurs [print this page] NiMH batteries on the activation of the old method of one essence
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 practices are:
First, the normal charge of the NiMH battery, and then two NiMH battery in 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 20A Digital Multimeter shunt current file wire resistance and table document that is a load of nickel hydrogen battery, a small tenths of a European resistance to observe the direct current meter will be from small to big and stability in 4A above, Ni-MH battery will gradually heat, when the feeling of Ni-MH battery When the temperature at 40 degrees 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 the normal Ni-MH battery charging Following a general discharge after the nickel-hydrogen batteries 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. Ni-MH battery in theory there is no memory effect. Memory effect for trouble because the battery capacity loss occurs, we can once again shine through once adequate way repeated several times, most of the battery can be repaired. Set aside time for some old, inactivation of the battery can try to use the high-current shocks to try and hit live. Laptop battery
