Have you ever built a battery drill, using a dead
cordless drill, and external battery pack? For a
while, I was saving a 12 volt drill that was dead.
I save it, becuase I figured I could put a length of
zipcord on it, and run it to a lighter plug. Power it
from the socket of a battery jumper pack.
Most Sub-C that I've found in drills are 1600 mA
hours, Compared to the cheap Rayovac NiMH AA
cells, which are about 2,000. could use a 12 volt
pack that runs AA cells (eight AA cells, Rat Shack
used to have these) and actually have more power
than the original pack. Plus, being able to test and
replace individual cells as they failed.
cells, far better than your original ones. quality rebuild with welded
very affordable the ones i sent came back looking almost like new,
they removed graftti, saying dead and must of polisjhed the packs.
The problem with HF drills is that the chargers suck.
They are not automatic in that they will over charge the batteries and kill
them, so alternate methods of charging should be used. The problem with
that idea is by the time you add the cost of rebuilding the cheap battery
packs, then getting a good charger it costs you more than a good drill
for as much as you need a cordless drill, why not pay once for a good Li ion
with lifetime warrantee?
Per a previuos posting .....................................
Cordless tools have been around for quite a while now.
So you'd think that some agreement on standard shapes and sizes would
have been arrived at?
And before everybody jumps all over that comment; how come we have
pretty well agreed standards for light bulbs, fluorescent tubes, plugs/
sockets, water pipe sizes, alkaline and rechargeable cells (AA, AAA,
D, C) etc. How come all automobile (almost all anyway) are 12 volts
and mostly negative grounded. Telephone dials and/or push button are
much the same, world wide. Even debit cards and credit cards are
somewhat compatible (often world wide). Tyre sizes and ratings follow
standards.. Also within areas of the world radios signals and TV
channels are coordinated ............ you don't have to buy a separate
TV set for each North American network and your 115 volt shaver will
work most places, at least in North and South America from the
Canadian Arctic/Alaska to Tierra Del Fuego! Before digital cameras,
film came in certain 'standard sizes'; while in the 'early days', my
grandfather told me some people used to make their own negative
photographic film plates by coating chemicals onto glass plates, in a
dark room, (black and white then) no colour of course, until around
the 1930s? And then developing their own negatives and pictures.
It's the old 'captive' and short sighted market idea that, among other
things, makes American pharmaceutical drugs among the most expensive
in the world!
For many quick jobs around the house and especially at the bench the
old reliable 115 volt hand drill (BandD $9 at K Mart many, many years
ago) is most convenient. It's no heavier and no fiddling around to see
which of at least two batteries is charged etc.
But later; batteries age, so it becomes cheaper to get a whole new
'cheapie' drill set with different batteries and a different charger
than buy a replacement battery pack/s. It's shame (criminal) how much
stuff like that is scrapped!
How does this ISO (Standards) work. Could it be applied to cordless
While true, not of much use to demonstrate anything about corporate
governance re: design of disparate products since TTI didn't exist until
1985 and didn't acquire Milwaukee until 2005, far too late to have had
any influence on lack of divergence in battery designs/pack configurations.
Of course, your farsighted quality idea is excellent. What
was going through my mind, is that once in a while I need to
turn screws. I use cordless drill, to take things apart, or
do replacements. I've replaced a couple electric sockets
recently, and plan to do a bunch more. Those #6-32 screws
have a LOT of thread, and the old analog screw drivers get
boring after a while.
It would be nice to have another cordless drill for screw
turning. I've got two in the van, and one in the Blazer (the
one in the blazer has the charge plug with it). I did end up
buying a power screw driver with alkaline AA cells for about
eight bucks at Walmart.
The drill with external battery pack is less convenient to
use, but it's nice thought. Being able to replace cells as
they go bad.
As to the HF drill. When it goes low, I put the battery pack
on charge for two hours. I'm not sure how old the drill is,
but it's got to be two years or more. Going strong. Yes, the
chargers are stupid.
I put the cheap "wall wort" type chargers on a timer for a few hours
when dead. Then it turns them on again for about 15 minutes a day.
Works great. A 5 year old B&D 12volt I bought in an emergency still
works great on the original battery.
True the cost is more than you paid for a brand new drill, but the
primecell standard replacement is far better than your original
battery pack. My best friend hads primecell rebiuil;d one harbor
freight pack and he is amazed at how well it works with 4 or 5 times
the original batter operation.
he is so satisfied he is planning on getting all his batteries rebuilt
from primecells website
Replace NICD with high capacity upgrade
Replace NIMH with high capacity upgrade
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