Home Page link

Battery memory on NiCad cordless drill

Home Repair - - If it ain't broken, don't fix it. Otherwise look here. 

Page 1 of 10       1 2 3 > last >> Bookmark this page:  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Battery memory on NiCad cordless drill Dan_Musicant 08-05-2006
If you were  Registered and logged in, you could reply and use other advanced thread options
Posted by Dan_Musicant on August 5, 2006, 5:47 pm
I have a Panasonic 12v (NiCads) cordless drill/driver with 2 batteries
and it seems to me that the batteries aren't holding a charge very well.
They are around 3-4 years old, lightly used. They seem to charge too
quickly. If I leave them in the charger after the charger shows them as
fully charged and let them trickle charge, will that top them up? I
haven't been doing that.

Is this a loss of capacity of the batteries? Is there some way I can
restore the capacity of the batteries? Any experience with these? Thanks
for any ideas, info, suggestions, etc.

Dan

Posted by Andrew Williams on August 5, 2006, 5:57 pm
The traditional way to erase battery memory is to deep-cycle the
battery. For a drill/driver, I would use it until the thing hardly
turns at all, then find a way of clamping the trigger down so as to
completely drain the battery. You want to get it as close to 0VDC as
possible. After that, fully charge the unit and see if the memory has
been erased.








> I have a Panasonic 12v (NiCads) cordless drill/driver with 2 batteries
> and it seems to me that the batteries aren't holding a charge very well.
> They are around 3-4 years old, lightly used. They seem to charge too
> quickly. If I leave them in the charger after the charger shows them as
> fully charged and let them trickle charge, will that top them up? I
> haven't been doing that.
>
> Is this a loss of capacity of the batteries? Is there some way I can
> restore the capacity of the batteries? Any experience with these? Thanks
> for any ideas, info, suggestions, etc.
>
> Dan

Posted by todd on August 5, 2006, 6:43 pm
That is very good advice, providing your goal is to kill the cells entirely.
You should not completely discharge NiCd batteries. Read
http://www.repairfaq.org/ELE/F_NiCd_Battery.html#NICDBATTERY_005 for a
reasonably technical discussion of this and other properties of NiCds.

todd

> The traditional way to erase battery memory is to deep-cycle the
> battery. For a drill/driver, I would use it until the thing hardly
> turns at all, then find a way of clamping the trigger down so as to
> completely drain the battery. You want to get it as close to 0VDC as
> possible. After that, fully charge the unit and see if the memory has
> been erased.
>
>
>
>
>
>
>
>
>> I have a Panasonic 12v (NiCads) cordless drill/driver with 2 batteries
>> and it seems to me that the batteries aren't holding a charge very well.
>> They are around 3-4 years old, lightly used. They seem to charge too
>> quickly. If I leave them in the charger after the charger shows them as
>> fully charged and let them trickle charge, will that top them up? I
>> haven't been doing that.
>>
>> Is this a loss of capacity of the batteries? Is there some way I can
>> restore the capacity of the batteries? Any experience with these? Thanks
>> for any ideas, info, suggestions, etc.
>>
>> Dan



Posted by CW on August 5, 2006, 6:54 pm
True.

> That is very good advice, providing your goal is to kill the cells
entirely.



Posted by Andrew Williams on August 5, 2006, 11:09 pm
What the hell do I know? I've only been successfully doing this for
years. Must be a fluke. At least I gave some advice that can
actually work instead of just shooting down someone's advice.






> That is very good advice, providing your goal is to kill the cells entirely.
> You should not completely discharge NiCd batteries. Read
> http://www.repairfaq.org/ELE/F_NiCd_Battery.html#NICDBATTERY_005 for a
> reasonably technical discussion of this and other properties of NiCds.
>
> todd
>
> > The traditional way to erase battery memory is to deep-cycle the
> > battery. For a drill/driver, I would use it until the thing hardly
> > turns at all, then find a way of clamping the trigger down so as to
> > completely drain the battery. You want to get it as close to 0VDC as
> > possible. After that, fully charge the unit and see if the memory has
> > been erased.
> >
> >
> >
> >
> >
> >
> >
> >
> >> I have a Panasonic 12v (NiCads) cordless drill/driver with 2 batteries
> >> and it seems to me that the batteries aren't holding a charge very well.
> >> They are around 3-4 years old, lightly used. They seem to charge too
> >> quickly. If I leave them in the charger after the charger shows them as
> >> fully charged and let them trickle charge, will that top them up? I
> >> haven't been doing that.
> >>
> >> Is this a loss of capacity of the batteries? Is there some way I can
> >> restore the capacity of the batteries? Any experience with these? Thanks
> >> for any ideas, info, suggestions, etc.
> >>
> >> Dan
>
>

Page 1 of 10       1 2 3 > last >>
Similar ThreadsPosted
Discharging NiCad Cordless Battery Pack June 2, 2008, 10:52 am
Cordless drills - Junk battery power packs and rebuilding old nicad cells March 26, 2008, 12:27 pm
Cordless Drill Battery vs. H.F. Brands October 22, 2007, 10:35 am
Rebuilding Cordless Drill Battery Pack September 6, 2005, 8:44 pm
How to recharge new NiCad battery June 13, 2006, 12:45 am
NiCad battery discharge rate? June 17, 2007, 11:41 pm
Cordless battery replacement December 4, 2005, 3:37 pm
Cordless Phone Battery & V-Tech ? March 10, 2007, 7:03 am
Question about cordless phone battery April 18, 2007, 12:58 am
Cordless battery pack dismantle? October 5, 2007, 4:11 pm

Contact Us | Privacy Policy

XML SitemapXML Sitemap