Researchers at the Fraunhofer Research Institution for Electronic Nano Systems ENAS in Chemnitz led by Prof. Dr. Reinhard Baumann have unveiled tiny, printable batteries that they hope to put into production for pennies apiece. The new battery prototype is primarily composed of a zinc anode and a manganese cathode that can be screen printed and covered with a non-printed template cover. Each mercury-free battery weighs less than one gram, and can individually produce about 1.5 volts of electricity. By placing several batteries side by side, however, up to 6 volts can be generated. The institute has already produced these little power houses in the lab, and hopes to see them into production by the end of the year. The batteries have a relatively short lifespan, making them suitable for applications such as powering greeting cards. All we can say is that this battery would have made the card we got two years ago that sang "Word Up" much, much awesomer.

[Via Physorg]

There are plenty of terrible portable chargers out there, but the "Wrist Band Portable Battery" sure isn't one of them. The name pretty much tells the whole tale -- it's a wrist band packed with a lithium-ion battery (that supposedly gets about five hours of juicing time) for charging numberless portable devices. It comes with 7 different adapters, and the totally awesomely-styled band itself has a set of LEDs which indicate the battery life remaining. It'll cost you about $25 to get one of your own and prove once and for all that no, punk is not dead. Check out a few more pics after the break.

It's not clear exactly how widespread the problem is, but it looks like at least some Dell Mini 9s are shipping with smaller batteries than they should be -- a situation that, you may remember, also plagued some Eee PCs a little ways back. According to jkkmobile, while the all the batteries are labeled a 32Wh, 4 cell batteries, a quick software test of their own Mini 9 revealed that the battery was in fact only 24Wh, which certainly cuts into the promised four-hour runtime a bit. Apparently, the folks on the MyDellMini forums were able to surmise that batteries with labels beginning in "CN" are the proper 32Wh models, while those that begin with "KR" are the smaller ones. Of course, there's no way to check that until you actually get one in your hands, so we're hoping Dell steps in to clear things up a bit.

[Via jkkmobile]

Update: It looks like MyDellMini forum member that initially reported this issue has since run a few more tests and discovered that the two batteries aren't as different as it seems at first, and likely not different enough to worry about. That's further backed up by some rundown tests, which actually showed the supposedly smaller KR battery lasting a bit longer than the CN one.

While there's plenty of folks out there focused on making lithium-ion batteries safer and longer-lasting, there's also thankfully some dedicated to making 'em cheaper, which is especially welcome when we're talking about the expensive batteries powering cars. Among those in the latter camp is University of Texas at Austin professor Arumugam Manthiram, who has devised a method of using microwaves to heat a concoction of commercially available chemicals, which ultimately results in the Rorschach test of rod-shaped particles of lithium iron phosphate pictured above. While the use of lithium iron phosphate instead of the more commonly used lithium cobalt oxide apparently cuts back on the total amount of energy the batteries can store, it is apparently particularly well-suited to delivering large bursts of power, which should make the batteries ideal for use in hybrid vehicles. What's more, while the actual cost of the materials may not be much cheaper than other solutions, the sheer speed at which Manthiram's process works could allow for higher production rates from the same amount of equipment, which should result in cheaper batteries by the time they roll off the assembly line.

[Via Daily Tech]