I am about to buy this cordliss drill, but was wondering if anyone has
any experience/opinions on how much of a difference there is between the
15.6V and an 18V (panasonic has an 18V for ~$40 more, but I like the
idea of lighter/smaller). I know the 15.6 volt will serve most of my
needs, but occasionally I want to drill though studs (for running wires,
e.g.) or 3/4" plywood, treated lumber, etc., and have found my old Ryobi
12V inadequte for such tasks (well, the batteries are pretty old in that
one). Will the 15.6V have the torque to accomplish such tasks, in
Its better to have too much power than not enough. For a high end drill like
Panasonic $40 difference is not that much more but the 18V maybe too heavy
for all around use. If it was me I just get a 14.4V drill (or keep the 12V
Ryobi and get new batteries) and grab my corded drill for heavy duty
drilling. I have a couple of older Panasonics and those batteies are
expensive and only good for a few years.
How do you think you get amps? Power (V*A) is really the metric of
interest (power = torque*RPM) . There will be less loss in a
higher-voltage drill, given the same power. Higher voltage = more power,
While it's true that for both volts and amps, more is better, in the
context of power drills the relationship between voltage and "more
power" is ambiguous. Drills can be geared to run at any range of
speeds, and voltage doesn't tell one anything about how much
_torque_ they can generate, which is the important spec with
regard to drills (at least for purposes of this discussion). Amps
on the other hand is a much better spec to determine the amount
of torque drills can generate. E.g. 5A is 5A, regardless of how
a drill is geared or its range of speeds.
Good try but I have to go with Keith. Power=VxA as stated by him and there
is no getting around that. Gearing down does not give you more power, just
more torque but less time to do the work given the same amount of power.
Efficiencies and battery quality vary across brands, and even
within models of the same brand. E.g. it's easy to find 15.6V
drills that have both more torque and longer capacity than
some 18 and even 19.2V models. The point is, an amp (or
at least ft/lb) rating is a much more accurate bottom line for
torque, whereas voltage isn't.
No one raised "efficiency". Even then, a lower voltage (thus higher
current) battery at the same power will be less efficient. There *are*
loses in the battery, controls, and motor. Voltage *does* matter.
No it's not. A high torque rating doesn't mean more power at all. Power
is torque *times* RPM. You really do need both, which is why any decent
cordless drill has two gear ranges. AFAIK, there isn't a standard for
torque measurement either. Stalling a drill isn't exactly recommended.
I just bought this drill this morning the 15.6v EY6432. I did my homework,
it was picked as the top drill by the editors of Fine Homebuilding in the
March 2003 issue. By all accounts it's awesome. NiMH batteries with a SMART
Charger -- alleluia! . It has the feel of a precision instrument. The only
down side is the price. But I finally got tired of buying a new drill every
two or three years. I'm hoping I'll get at least 5 or 10 years out of this
one. I'm going to try to rebuild my old drill's battery packs (see my post)
to use as a back up or as a spare.
I bought the Panasonic 15.6V drill in July and it's great. Based on
published reviews and
hands-on shopping, my choices were down to the 15.6V Panasonic and the 18V
I bought the Panasonic because it was lower cost, lighter and smaller to get
places. I am in the process of remodelling our lake cottage and spent a lot
this summer rewiring the place. I've been using 3/4" spade bits to drill
through doubled up
studs and top plates to pull romex wire. Plenty of torque for that job;
enough to almost
break my wrist when the bits catch unexpectedly. The charge in the batteries
I also used it to drill through 4x4 treated lumber for some dock repair. No
Got it for $175 (+S&H) through Amazon on one of their sales.
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