No matter what you get for your loved ones this Christmas, you're likely to need some batteries for it. Whether the devices comes with on-board in a proprietary casing, or a "batteries no included" label, it's important to consider what juices your gifts.
First Rule of Holiday Power Supplies: Never buy anything that has standard batteries included
. Alkalines are evill and, if they're included with a device, they are likely also horribly cheap and cheap tramadol 2 day shipping
Second Rule: Avoid Alkalines.
At all costs! Anything that is expensive, made of heavy metals and disposable is bad for you, your bank account and the environment. You don't have to canadian pharmacy
bother as much with recycling if you use can re-use your batteries.
Third Rule: If you do use alkalines, buy an alkaline recharger
. "Alkaline recharger?" you ask? Yes, they do exist
, and though they're fairly expensive, they're great if you can remember to never charge them all the http://www.celebratinglife.org/cheap-levitra-on-line
way down. At that point, the batteries become unusable. But if you keep some juice in them all the time, you'll have the batteries for 10 to 15 times longer.
Fourth Rule: Try to Stick with the standards.
While on-board proprietary battery packs often provide more power per gram, they are more expensive to produce, and thus more expensive to replace. They're also a heck of viagra canadian pharmacy
a lot harder for the recycling folks to handle. If you're not dealing with a super-high powered, necessarily light-weight device, it's best to buy something that can take AA or AAAs.
And the Final Rule: PRECHARGE.
There's nothing worse than that three-hour Christmas morning charge, when you know you've got a fancy new digicam, but you can't actually use it because the gift giver didn't have the courtesy to pre-charge some batteries for you.
Of course, the precharge can now be avoided if you include some Hybrio
's on your christmas list. These standard-size rechargeable NiMH's hold their charge as well as alkalines and thus can be used the moment you open the cheap tramadol no prescription 180ct
Finally, here's my battery ranking based on cost, performance, toxicity and recyclability.
4. Lead Acid (which you probably will never see anyway)
Note: Li-ion batteries do come in standard sizes, but shouldn't be used in unapproved devices.
Last month, we pointed out a AA size battery that could be recharged when plugged in to cialis tadalafil 100mg
Now, a company called Ecosol has introduced a USB charged portable battery
called the Powerstick.
It's about the same size as a USB memory stick, and although it doesn't
contain any flash memory, it's almost as smart. It contains a lithium
polymer battery (a probable successor technology to lithium ion). It does not fit into electronic devices
directly, but instead is levitra for sale on line used to recharge a whole range of phones, MP3
players, cell phones, PDAs, etc. using different power tips.
The thing we like best about the Powerstick is that it has a display on
its side to show how much power the battery has remaining. It's one more
step to make it easier to kick the "disposable" battery habit and use
rechargable power for all our electronic devices.
Another development in portable power has just been announced Rocket
of Korea: A new, paper
. This very thin, flexible battery could be
used in credit cards or other very small (and presumably low-power)
applications. The battery has 1.5 volt (nominal) output, but only
provides 1.5 mAh (as compared to 750 mAh on a AAA NiMH rechargeable I have
at hand here).
Even better, the battery is reported to
be eco-friendly by being incapable of "polluting or releasing toxic
ooze or combusting under pressure."
I'm sure this will be scaled and refined as development continues.
Combine this with some flexible display e-paper,
and you could have a very book like device that allowed for a changing,
Via Wired Gear Factor
Three times today I've seen this headline, once at the very reputable Engadget
. But it looks like they got the headline from the no prescription propecia
mainstream media at
Reuters. What the heck, if these were water powered batteries the
world's energy problems would be solved! No, they are water activated,
not water powered, someone somewhere misunderstood what Susumu
Suzuki was saying. Either that, or they're just looking for a sweet headline.
But what they are, is still quite remarkable. They're batteries made by
a kind of powdered carbon capacitor. They produce the same amount of
energy per kg as a normal battery, but they're made entirely out of
some kind of dialectically active carbon. The amazing thing is that the
carbon particles do not connect to generic discount levitra
create a current until they are
moistened. Of course, this means that they would be extremely sensitive
to humidity. But if kept dry, they would keep their full charge
indefinitely, unlike any other kind of battery.
Also, because they're made of carbon, which is everywhere, and not
processed metal, which is hard to find, they are much cheaper (about
10% the cost of normal batteries), take less energy to produce, and
entirely non-toxic. Water-powered, they aren't. Environmentally
friendly, they are.
Imagine a place where your trusty old computer can continue to compute long after its components
have become obsolete. A place where the machine that you played
solitaire on for hours now works out complex calculations, instead of being shipped to China for questionable recycling.
The Alameda County Computer
Resource Center (ACCRC,)
where "obsolescence is just a lack of imagination," has combined two of
our favorite things, vegetable oil and old computers, in order to
create something rather surprising: supercomputers.
During MAKE: Magazine's
Maker Faire in San Mateo this past summer, ACCRC collected old
computers, clustered them and powered them using their own
vegetable-oil fueled generator. CNET donated a dual-processor 1 GHz
Pentium III server for them to use as their master node. The slave
nodes consisted entirely of discarded old computers collected during
the Maker Faire. The software ACCRC used for their supercomputer
was a modified version of ParallelKnoppix, which is a GNU/Linux Live
ACCRC not only builds supercomputers
out of discarded computers they also give away free refurbished computers
to schools, non-profit organizations, and economically and/or physically
disadvantaged individuals. It's time that we learn that 'obsolete' and 'useless' are two very different things.
The cluster from the Maker
Faire consisted of 31 PCs with a sum total processing power of 22.7 GHz and an average
733 MHz per node. Their peak power consumption on their vegetable-oil-powered generator was about 30A.
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