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nuckolls.bob(at)cox.net
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 Posted: Fri Nov 23, 2007 11:26 am Post subject: New consumer product battery |
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Doing some house maintenance this weekend and during
a trip to Home Depot for some parts and supplies, I
was "sucked in" by a Black and Decker "VPX Power" display
at the checkout stand.
http://www.vpxsystem.com/
The battery for this new line of cordless power tools
http://www.aeroelectric.com/Pictures/Battery/Black_and_Decker/VPX_Battery_1.jpg
is LiIon and the battery on display was advertised at 7 volts.
A very compact critter . . .
http://www.aeroelectric.com/Pictures/Battery/Black_and_Decker/VPX_Charger_F1.jpg
but no place on the packaging (or later on the 'net)
was I able to discover the capacity of this device.
Sooooo . . . keeping Lord Kelvin's admonition about
numbers in mind, I purchased a battery/charger
combination to do some testing.
I've got the battery on charge right now. Will cap-test
it later today and report the results. This product
(or a pair of them) might offer some interesting
solutions to brown-out protection and/or small
back-up batteries. Watch this space.
In the mean time, I'll get back to making little
piles of sawdust and drill chips.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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sportav8r(at)gmail.com
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| Posted: Sat Nov 24, 2007 5:40 am Post subject: New consumer product battery |
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I've been taken in by the new offering as well, but decided that the
drill I wanted was the 14volt "2VPX" model, which is not available at
any WalMart within 50 miles for the past month. All have a place on
the shelf for the dual battery drill, and all will sell it for $99
when they come in, but apparently it's a back-order item.
I wonder about ease of secure connection to the battery's terminals in
hobby applications... have you worked something out, Bob?
-Bill B
On 11/23/07, Robert L. Nuckolls, III <nuckolls.bob(at)cox.net> wrote:
| Quote: |
<nuckolls.bob(at)cox.net>
Doing some house maintenance this weekend and during
a trip to Home Depot for some parts and supplies, I
was "sucked in" by a Black and Decker "VPX Power" display
at the checkout stand.
http://www.vpxsystem.com/
The battery for this new line of cordless power tools
http://www.aeroelectric.com/Pictures/Battery/Black_and_Decker/VPX_Battery_1.jpg
is LiIon and the battery on display was advertised at 7 volts.
A very compact critter . . .
http://www.aeroelectric.com/Pictures/Battery/Black_and_Decker/VPX_Charger_F1.jpg
but no place on the packaging (or later on the 'net)
was I able to discover the capacity of this device.
Sooooo . . . keeping Lord Kelvin's admonition about
numbers in mind, I purchased a battery/charger
combination to do some testing.
I've got the battery on charge right now. Will cap-test
it later today and report the results. This product
(or a pair of them) might offer some interesting
solutions to brown-out protection and/or small
back-up batteries. Watch this space.
In the mean time, I'll get back to making little
piles of sawdust and drill chips.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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Eric M. Jones
Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts
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| Posted: Sat Nov 24, 2007 9:37 am Post subject: Re: New consumer product battery |
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Sounds great.
I also want to recommend watching Firefly Energy:
http://www.fireflyenergy.com/
In Summer 2008 (6 months!) they plan to sell Oasis(tm) batteries.
Although I stand guilty of believing that this-or-that battery technology was the Next Big Thing....Caterpillar is behind this deal, and it seems to be real.
Cool....I hope.
"Hey, it ain't rocket surgery!"
--anonymous
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_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net |
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klehman(at)albedo.net
Guest
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| Posted: Sat Nov 24, 2007 10:28 am Post subject: New consumer product battery |
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Hopefully their graphite foam is more successful than the lead thin film
efforts of a few years ago.
65% of capacity at -20*C may be impressive but - thankfully my
batteries are not quite "inert" at that temperature as per their
brochure claims. Sluggish for sure but many batteries start engines
colder than that.
do not archive
Ken
Eric M. Jones wrote:
| Quote: |
Sounds great.
I also want to recommend watching Firefly Energy:
http://www.fireflyenergy.com/
In Summer 2008 (6 months!) they plan to sell Oasis(tm) batteries.
Although I stand guilty of believing that this-or-that battery technology was the Next Big Thing....Caterpillar is behind this deal, and it seems to be real.
Cool....I hope.
"Hey, it ain't rocket surgery!"
--anonymous
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net
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nuckolls.bob(at)cox.net
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| Posted: Sat Nov 24, 2007 7:10 pm Post subject: New consumer product battery |
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At 08:39 AM 11/24/2007 -0500, you wrote:
| Quote: |
I've been taken in by the new offering as well, but decided that the
drill I wanted was the 14volt "2VPX" model, which is not available at
any WalMart within 50 miles for the past month. All have a place on
the shelf for the dual battery drill, and all will sell it for $99
when they come in, but apparently it's a back-order item.
I wonder about ease of secure connection to the battery's terminals in
hobby applications... have you worked something out, Bob?
|
The terminals on the battery are "female" designed
to accept a tab on the order of .03" thick and .2"
wide. I'm using pieces of brass shim stock right
now. I would think that a silver plated brass tab
would be the best connection.
The connection could be problematic. If we develop
a way to charge it in situ then sculpturing the
battery case to allow soldering would be an attractive
option. Obviously, as soon as the battery is "modified"
one cannot use the stock drop-in charger. I wasn't
aware of a 14V version. The battery I'm testing is
a 7V device, two would be needed to craft a system
battery.
The first discharge run a 5 amps produced a capacity
of 0.9 A.h. for a total time of .18 hours or 11 minutes.
The second test at 1 amp produced the expected, slightly
better capacity value of 1.0 A.h. and 1 hour to discharge.
I'm recharging the battery now and will repeat the 5 amp
test to see if this technology shows a slight improvement
in capacity when placed into initial service. Then I'll do
the 1 amp test again. The charger that came with this
particular battery takes about 6 hours to do a full
recharge.
When I'm done with the cap checks, we'll do some
pulsed high current loads to look at internal
resistance. These are not going to be engine
cranking batteries . . . but they might be something
to consider for brownout protection for loads of up
to 10A total or so. We'll see.
Bob . . .
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nuckolls.bob(at)cox.net
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| Posted: Sat Nov 24, 2007 7:18 pm Post subject: New consumer product battery |
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At 08:39 AM 11/24/2007 -0500, you wrote:
| Quote: |
I've been taken in by the new offering as well, but decided that the
drill I wanted was the 14volt "2VPX" model, which is not available at
any WalMart within 50 miles for the past month. All have a place on
the shelf for the dual battery drill, and all will sell it for $99
when they come in, but apparently it's a back-order item.
|
Bill, take a look at
http://tinyurl.com/2347vm
There is a discussion thread below the
promotional data.
I've not found a 14V "2VPX" battery but did
see a two-holer charger offered with a 2VPX
tool. Do you suppose the same battery is used
in both the VPX and 2VPX tools . . . with the
latter requiring two batteries?
After becoming aware of this product line
at Home Depot, I've been watching for it to
pop up in other stores. Haven't seen it
any place else . . . yet.
Bob . . .
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sportav8r(at)gmail.com
Guest
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| Posted: Sun Nov 25, 2007 2:38 pm Post subject: New consumer product battery |
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The 2VPX drill I want to get my hands on loads two of the 7 volt batteries in its base to obtain 14v. As far as I can tell, the entire product line is standardized on the use of the 7 volt batteries. At WalMart, the batteries are 19.99 each.
One concern I have is that the starting voltage of two of these cells in series, freshly topped off, might be enough to push some avionics to the limit. What if there are 16v SMT devices in my Garmin 296 that will fizzle at a tad less, say 15.5 volts, and the fresh cells exceed that at the moment of initial use? Something to get numbers for and think about.
Keep us posted.
-Bill
On Nov 24, 2007 10:17 PM, Robert L. Nuckolls, III < nuckolls.bob(at)cox.net (nuckolls.bob(at)cox.net)> wrote:
[quote] --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)cox.net (nuckolls.bob(at)cox.net)>
At 08:39 AM 11/24/2007 -0500, you wrote:
| Quote: | --> AeroElectric-List message posted by: "Bill Boyd" < sportav8r(at)gmail.com (sportav8r(at)gmail.com)>
I've been taken in by the new offering as well, but decided that the
drill I wanted was the 14volt "2VPX" model, which is not available at
any WalMart within 50 miles for the past month. All have a place on
the shelf for the dual battery drill, and all will sell it for $99
when they come in, but apparently it's a back-order item.
|
Bill, take a look at
http://tinyurl.com/2347vm
There is a discussion thread below the
promotional data.
I've not found a 14V "2VPX" battery but did
see a two-holer charger offered with a 2VPX
tool. Do you suppose the same battery is used
in both the VPX and 2VPX tools . . . with the
latter requiring two batteries?
After becoming aware of this product line
[b]
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