I just converted a Dremel 10.8 V rotary tool to use Bosch 10.8 V
batteries. I always have the rotary tool immediately in front of
me, so the battery will either be worn on a neck strap or be set
down near the work. The wires coming from the rotary tool plug
into the battery, using a socket taken from another Bosch tool.
That was done because the rotary tool battery charger sucks.
Apparently the charger destroyed one of my two battery packs.
Also, I have lots of Bosch 10.8 V MAX batteries.
Preliminarily speaking, having the battery connected through a
wire to the tool is working great. It's a cutoff tool, so maybe
the fact that it is ultra light without an integrated battery is
the reason. Or maybe it's just infatuation, wouldn't be the first
time. The battery pack can be worn around my neck, hung from a
utility belt, or set on a table (the way I'm doing it now).
I suppose eventually battery technology will be light enough that
we will reach the point of diminishing returns for lightness, but
that hasn't happened yet.
On 11/21/2011 6:54 PM, firstname.lastname@example.org wrote:
I've an old Ryobi 12 volt drill that I was thinking of wiring up to a
cigarette lighter plug for use on the boat.
Run off the house battery.
But removing the batteries doesn't always improve tool balance...
Removing the battery pack and (instead) connecting it through a
short wire improves the balance of my rotary tool.
They could probably make an extremely compact and lightweight
lithium-ion battery powered rotary tool that would function better
than a flexshaft, that way.
I too, have a rotary tool always next to me, actually 3. Dremel does
make a Li-Ion battery model ... that's my #3 unit. Actually, it is
usually my number one go to unit. Its battery and charger seems to be
ok. I only have 1 battery and have had it for many years. It's
probably close to needing replacement. This battery unit does, however,
lack the power a regular AC Dremel possesses. Maybe a new battery would
improve it. The 2 other units I have, which are always on the bench,
is a variable speed AC dremel and a Ryobi. When Dremel built this AC
model, they built pure junk. This model has the variable speed slide
lever. The tool itself is our of balance so that at high speeds it
vibrates. It vibrate so bad that the speed lever will move on its own.
However, I still use it. The Ryobi speed is only 20K max, but has
much more torque than the other 2.
If you have other 10.8 V battery tools (like Bosch 12 V MAX), and
a socket that can be taken from the same type of tool, you can
convert your rotary tool into an ultra light weight cutoff tool.
And likely you will be improving the battery performance at the
same time. I took the connector/socket out of a Bosch 12 V MAX
flashlight, connected a 2 foot wire to it, and soldered the wires
into the rotary tool. I'm going to buy some cheap connectors in
addition to that, so that I can use the same (expensive)
tool/battery connector to connect the same type battery to another
device. For example... For using the bright end of the hacked
Bosch flashlight on my skating helmet.
Might be a good time to move away from the cheap charger that
comes with 8000 series Dremel tools. The only difficulty is
finding a spare connector for the battery.
On Wed, 23 Nov 2011 17:42:36 -0500, email@example.com wrote:
That would depend on the control circuitry and motor combination used
by the tool, and the voltage of the substitute battery used. There can
be considerable di/dt, normally handled by the local battery's
placement. Stick the battery at the end of a cable, you'll get more
than just DC cable losses - there will be voltage spikes at the load,
voltage ripple on the controller supply, and rdiation from the
I'm not worried. It's not my tool, but you don't paint just one side
of a fence.
It IS becoming increasingly difficult to get clean and stable FM
broadcast reception - never mind AM - particularly from smaller or
I expect there are similar problems over the rest of the spectrum -
with effects not so easily identifiable by the victim. The perpetrator
is, inevitably, ignorant of them.
It seems like people are obcessed with cordless everything these days.
I have never understood the reasoning. Granted, there are situations
where a cordless device has an advantage, for example a cordless tool
when working out in a field, a cordless phone when one has to be
walking around, such as in a warehouse, to locate items, etc. But
these situations are rare compared to most uses. They are for unusual
situations. Most of the time there is an outlet nearby. Myself, I
think cordless devices have more disadvantages than advantages.
Batteries going dead at the wrong time are at the top of the list, as
well as lower power, weight, and the cost of batteries is a huge
factor..... and there's much more, not even mentioning all the
pollution found in those batteries.
According to the advertisers "cordless" is a selling point and is
highly praised, but in the real world, cordless is more often than not
a pain in the ass. What is really so bad about a cord? The cord on
my plug in drill, power saw, or other tools is no real problem, as
well as the cord on my house phone.
I think the advertisers all have us brainwashed into thinking cordless
is better, but after using the stuff it dont take long to realize that
it's not best or even good in most instances. If I'm near an outlet,
I use the outlet. Even devices like my laptop computer, are normally
plugged in, because I hate interruptions "low battery".....
Cordless has it's uses, but in most cases they are overused....
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