Power Storage

Energizer Installing Trojan Malware With Battery Charger

Philip Proefrock

USBTrojan
Energizer's DUO Charger is a battery charger for NiMH (nickel metal hydride) rechargable batteries. (This isn't the same as USB batteries that have a built-in USB port on the batteries themselves.) Energizer provided a nice little desktop app for computers so that the user could see the charge status of their batteries along with the charger. We're not sure what the point of this is, really. I mean, is the indicator light on the charger not enough for you?

Unfortunately, that app included a Trojan that would compromise security and open a back door for unauthorized access on Windows machines. The trojan allows files to be sent and executed on your machine without your permission. There are alerts about this from both the computer security company Symantec as well as from US-CERT (Computer Emergency Readiness Team). Energizer has an advisory notice on their site where the software was downloaded from.

Only users with Windows computers who downloaded the software are at risk; there is noting in the battery charger hardware itself that threatens computers. If you have installed this software, which you would have had to seek out and download separately, you need to uninstall it to prevent it from putting your computer system at risk.

[Edit to add: It's pretty clear that Energizer was not a willing party to this. They have stopped providing the software for download and put out the announcement about the problem. They also note they are "currently working with both CERT and U.S. government officials to
understand how the code was inserted in the software."]

My advice, never install software for a piece of hardware that obviously doesn't need it. Battery chargers should charge batteries, there's no reason to make that relationship more complicated.

Link: Energizer advisory (PDF)

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California Considers Mandated Grid Storage

Philip Proefrock

Legislators in California have introduced a bill that would require electric utilities to provide grid-scale energy storage in their operations. The bill would call for a capacity of 2.25% of daytime peak demand by 2014 and 5% of peak demand by 2020.

A variety of technologies could be included in the mix to provide grid energy storage, including pumped storage hydro, compressed air storage, utility-scale batteries, and flywheel storage systems.

This may have the indirect effect of encouraging the utilities to promote efficiency measures and to encourage load shifting, in order to lower the amount of storage that would be required.

via: Building Energy Performance Info

image credit:

http://www.flickr.com/photos/andyarmstrong/ / CC BY-SA 2.0

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Many Uses for Super Charge Ion Batteries

Philip Proefrock

We've seen Toshiba's SCiB (super-charge ion batteries) before at last summer's Consumer Electronics Show, where they were providing the power storage for a battery-assisted bike. SCiB batteries are useful for a wide range of functions, from electric bicycles and hybrid and electric vehicles, to industrial equipment and renewable energy storage. Toshiba has now opened a US-based technical support center to aid in developing the SCiB, particularly for vehicles, grid storage, and wind and solar power applications.

The SCiB has characteristics that make it very appealing. It performs like an ultracapacitor with rapid charge times, reaching 90% charge in about 5 minutes. It is good for thousands of cycles without extensive capacity loss, and it has a life span of 10 years or more. And, of potentially particular interest for vehicle manufacturers, it is able to perform even at low temperatures down to -30 degrees Celsius (-22 degrees Fahrenheit).

The SCiB batteries are based on lithium chemistry, as are many other batteries currently in use. However, according to Toshiba, in addition to the other beneficial features the SCiB offers, they also have an internal structure which helps prevent short circuits and avoid "thermal runaway" even if they do develop a short circuit.

Link: Toshiba

via: NA Windpower

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Rubber Material Harvests Energy from Small Movements

Megan Treacy

pzt-rubber
A new material developed by researchers at Princeton and Caltech is capable of harvesting energy from the simplest of movements like walking or breathing. This new rubber chip made of PZT (lead zirconate titanate) nanoribbons could eventually power small portable electronic devices like cell phones.

The PZT is embedded in silicone rubber sheets that produce electricity when flexed or other pressure is applied. The scientists who developed the chip see them being inserted into shoes or even within the body to continually harness power for our portable devices.

Before that freaks you out too much, the scientists envision the chips being placed next to the lungs to utilize breathing motions for powering pacemakers. Pacemaker users wouldn't have to undergo surgery to replace batteries since their breathing would be a constant source of energy.

The reason this particular material stands out compared to all of the other piezoelectric materials out there is that it's far more efficient. According to the researchers, PZT can convert 80 percent of mechanical energy applied to it into electric energy, which is 100 times more efficient than quartz. That efficiency allows it to harness such small movements like breathing and opens up a much greater range of possibilities for its use.

via CNET

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Printable Lithium Batteries Coming Soon

Megan Treacy

print-battery
First came printable solar cells, then printable OLED lights and now ladies and gentlemen, we have printable lithium batteries. Japanese researchers have announced they've developed a way to manufacture the batteries with mass-output, roll-to-roll printing technology.

The printed battery sheet is very thin (500 μm), flexible (allowing it to be attached to curved surfaces) and designed for use with a flexible solar battery, a combination that could be both a power generator and power storage unit. The battery prototypes have an output voltage of 2V - 4V, but the battery capacity hasn't been revealed. The benefit of the roll-to-roll printing is that it's highly efficient, meaning cheaper production.

Unlike other prototype technology, this cool breakthrough isn't one that we'll have to wait 10 years to see in production. The research team, who work with the Advanced Materials Innovation Center of Mie Industry and Enterprise Support Center in Japan, plans to finish studying the technology and start shopping around for commercial opportunities sometime next year.

via TechOn

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