Ed Blough
12-19-2005, 5:47 PM
I have a Makita 14.4 Ni MH 2.6 amp system. On one battery if I put it in the charger it will be there about 5 minutes and the charger signals it is finished and goes into top off mode. If I use the battery it is fully charged but will drain in about 3 minutes.
I have measured the battery after charging and it reads 14.4+ volts. So I think that is saying all cells work. Since it reaches full charge and seems to have good amperage for a minute or two I'm confused with what could be wrong. The battery can sit on my bench for about week and still have a charge so I don't see a short anywhere.
I would think if a there was a bad cell the charger would tell me yet the charger seems to think everything is great. I have tried to cycle the battery with little change in charge or discharge rate. I tried to put them in the freezer, but chickened out after about 30 minutes. I even tried to reverse charge it but all that did was make the battery hot.
Other than getting a new battery anyone have any idea what could be wrong and or how to fix it?
Thanks so much
I have measured the battery after charging and it reads 14.4+ volts. So I think that is saying all cells work. Since it reaches full charge and seems to have good amperage for a minute or two I'm confused with what could be wrong. The battery can sit on my bench for about week and still have a charge so I don't see a short anywhere.
I would think if a there was a bad cell the charger would tell me yet the charger seems to think everything is great. I have tried to cycle the battery with little change in charge or discharge rate. I tried to put them in the freezer, but chickened out after about 30 minutes. I even tried to reverse charge it but all that did was make the battery hot.
Other than getting a new battery anyone have any idea what could be wrong and or how to fix it?
Thanks so much