How to rejuvenate a Ni cad battery?

Question

does anyone know of an online guide that you don't have to pay for. Even a step by step guide.

Answer 1

Run down the charge completely prior to re-charging.

Answer 2

back when I used to fly radio controlled gliders, we had a problem with the "so called" memory effect. It had nothing to do with "memory",just the natural decline in performance due to ageing. We found that by "zapping" cells with a high current,(20,000 volts!!!!!!) the effect could be reduced. Apparently it worked by burning away the nodes that were shorting between the layers in the cells, also when done to new cells it seemed to make them work better ? The R/C buggy and circuit racing fraternity have been doing this for years, BUT, and here is the BIG WARNING. The technique is EXTREMELY DANGEROUS and can cause the cells too EXPLODE if not done correctly.So how do you find out how too do it, well thats the Catch 22, no-one will show you how, you have to learn it the hard way! BE VERY CAREFUL AND WEAR REALLY GOOD PROTECTIVE CLOTHING< GLOVES, GOGGLES ETC

Answer 3

http://www.zbattery.com/memoryeffect.html
Click on this. It explains it well.


Almost anyone who uses rechargeable batteries has heard of the memory effect problem.
For those who have not heard of this problem it is commonly believed that when rechargeable batteries are not fully discharged between charge cycles that they remember the shortened cycle and are thus reduced in capacity (length

portion copied from :

Answer 4

Basically the memory effect often quoted, is the equivalent of sulphation in lead acid,i.e. car batteries. crystallisation of components. It can be prevented and sometimes cured. Try googling nicad batteries. There are lots of helpful sites out there.

Answer 5

they have memory cycles, compleatly discharge then a good long slow charge. Then repeat a few times. Its about as much as you can do short of replacing the battery

Answer 6

http://www.batteryuniversity.com/index.htm