Do you have any special rechargeable batteries for Panasonic cordless phones?
The reason is the increase of internal resistance of Ni MH battery at the end of each charge, the internal chemical reaction occurred joint electrolytic water so that the internal pressure increased, although most of the gas can be combined into water, but in the case of high pressure, there will still be a part of the gas safety valve through the overflow. Over time, the water shortage on the inside, and the following steps to teach you to repair;1, after the battery is removed, the positive and negative pole is shorted from 3 to 5 hours;2, open the safety valve. Four small holes in the head of a battery, with pins or other sharp objects.
The model of this battery should be model HHR-p104, nickel hydrogen battery 830ma, 3.6V.Nickel metal hydride batteries are often used in digital cameras. After a period of time, the capacity of nickel metal hydride batteries has been attenuated. How to repair Ni MH batteries at this time is a critical issue.
Heat the battery with a freshly boiled water. Wait until the positive end is no longer bubbling, but don't boil the battery. Then put it in a cold water pan and shake for a minute. 4, take out the battery, dry, pull out the sheath. Best to use cross screwdriver with a small hammer, the positive cap center position slightly dented, in order to increase the safety valve seal, the concave 0.5mm can hit more dangerous! 5, 5 hours after placing began to charge and discharge repeatedly 3-5 times. The first charge with fast charge (here, the Panasonic BQ390) charge about half an hour, and then use the slow charge (with 100mAGP charging treasure) charged to the terminal voltage above 1.45V (very long time), then with the medium or slow charger (with SONY BC-CS2A). Reset volume. Here is the first full power for 5 hours, and then use the "ZB210 multifunctional battery capacity tester with 1A transverse flow discharge to the end, and then the capacity (10mAh, accurate to four to five homes) with paint pen mark on the battery. This can be reused.
