How many devices do you use daily that require batteries?

almost everything I rely on for work or getting around the city has a battery. another interesting question is what would you do without them?

I can't count. I bet there's a battery operated version of almost everything.

7 - ipad, another iPad, remote, mouse at home, mouse at work, phone, laptop

Remote controls, laptops, a cell phone - though it's battery life quickly ends.

Plenty, because I'm always running out!!

Probably at least 8 a day....

way too many to count...remote controls, kid's toys, alarm system, smoke and carbon monoxide alarms, garage door openers etc etc probably 20 items easy!

too many to count. 10+ probably

non-removable batteries count? Too many...iphone, ipad, etc..

Removable batteries...I think just my TV Remote Control. I do usually remove the batteries from all my kid's toys just to keep them silent :)

It is an endless list... it is amazing when you think about it though, as what did people do before batteries and the need to have everything "instantly"

Car, remote control (x 4), iPhone, iPad, smoke alarm, carbon monoxide alarm, laptop, watch and those are just the ones off the top of my head...

Does my wheelchair count?

If so, I have two power-chairs one being a back-up, then there's the RCs for my televisions. . . that's it!

I'd love to find an alternative when it comes to the wheelchairs; firstly, those batteries are huge & heavy and while they last for several years for most, they still contribute to hazard-waste situations.

I just saw a thing on the Science channel of some such, in which a Car was featured, that runs on compressed air. Seems my chair could do the same and could be recharged by a small compressor at home. . . get the same speed and mileage, possibly charging the rest of what little power that is needed, via solar or at least, much smaller batteries, such as cell phone batteries.

Oops. . . there goes another million dollar idea I'm going to miss out on.

Too many....I have six things within two feet of me right now. My remote control, laptop, cellphone, calculator, plantronics headset and the watch on my wrist all run on batteries.

i wonder how long i could last without batteries. no phone, no computer, no remote to turn on the tv, no cars, taxis... would be rough but it might be a fun exercise!

Too many to count them all!

Liquid battery... Neat. It can be scaled up, but to what degree can it be scaled down? This is important for portable devices.

What does that mean? Everything runs on batteries:

Phone
IPOD
Remote
IPAD
Computer
Car

I can go on and on and on...

Oh, jeez....laptop, iDevice, digital camera, clocks, car, remote, XBox controller, pocket watch (alas,it is not mechanical) and that's just off the top of my head.

hmmm...i dont know. probably about 20!

Seems like my remote control is the only thing I'm putting batteries into regularly... and a couple of clocks.

awe man, no vibrator bad marraiges jokes.if shit has gotten so serious that some one can lob a gem about battery operated devices, and we are all so serious no vibrator jokes are to be found, we are in deep trouble.

Laptop, Ipod, cell phone, two remotes (one T.V. the other DvD), a laser pointer, kindle, Nintendo DS, car, two flashlights, and a digital camera.

The only two devices not running on rechargeable batteries are one of the remotes and one of the flashlights, but it is hard to find rechargeable D's.

A few clocks and a few remotes.

Probably more than I realize -- remote controls, cell phones, cars, watches, smoke alarms, and about a zillion others...

I would guess around 10 or so. I never seem to have the right size batteries laying around when I need them though!

There's no doubt that us Earthlings need some new ways to power our world, but getting the most out of renewable energy is still a profound problem. Wind and solar power have always been attractive solutions for a variety of reasons, but one of the most compelling is that they never run out. So in theory, if we can find a way to extract energy through windmills and solar panels, we have a potentially unlimited well of juice to keep the lights on all over the globe. Of course, extracting enough of it to power the world is a pretty big problem, and thanks to scientists, engineers and other brainy folks, we may actually get there some day.

But harnessing it is only half the battle, because if we rely on wind and sunlight to keep our cities powered, what do we do when the sun isn't shining and the wind isn't blowing? We need to store energy somewhere in those stiller, darker times, but the batteries that we have now aren't up to the task. Before we resign ourselves to a future where there's no TV after sunset, it might make sense to listen to TED speaker Donald Sadoway. He's reinvented the battery and created a new way to contain energy which might just be the ticket to keeping the streetlights on in a greener future.

His "liquid battery" is, in principle, a lot like the traditional battery -- a positive and a negative electrode on either end, and an electrolyte in the middle. But in Sadoway's battery, the contents are all fluid and the components separate naturally like oil and water. These liquid metals are dramatically more affordable than their solid counterparts, which makes scalability much easier. They could get hundreds of times bigger than what's in your remote control right now. Moreover, fluids are more conductive than solids, so you can move ultra-high currents through them with considerably less resistance.

The liquid battery is a great example of how a little smart thinking might help us out with a big real world problem.