It's cold. I'm sitting here with a heating pad on my desk chair. I use it all the time, but I have no idea what its real impact on my electric bill is. The same goes for my LED Christmas tree and the glowing smartphone charger I leave plugged in all the time. The big mystery around the cost of electrical appliances could soon be cleared up if a little device called MeterPlug hits its fundraising goal on Indiegogo.

MeterPlug plugs into an outlet. You then plug your appliance directly into the MeterPlug. The gadget reports energy usage over Bluetooth to an app that translates the draw into actual dollars. You can manually enter your local electricity prices or use the app's average for your country.… Read more

Liquid Metal Battery, an MIT spinoff backed by Bill Gates, has secured an additional $15 million in series B financing in a funding round led by Khosla Ventures, the company announced today.

The Cambridge, Mass.-based company, which aims to build a cheap battery for bulk storage of wind and solar power, also announced that Andrew Chung, a Khosla Ventures partner, would join the board.

"Our Liquid Metal Battery technology is tremendously exciting because it has the potential to dramatically change the electric power system everywhere," Liquid Metal Battery CEO Phil Giudice said in a statement announcing the … Read more

Scientists are genetically engineering viruses in the pursuit of better battery life, perhaps leading to smartphones charged from the motion of walking.

The Department of Energy's Lawrence Berkeley National Laboratory yesterday described a microelectronic device that uses a benign virus to build up electric charge from movement.

Its first prototype was able to display the No. 1 on an LCD display when a person pressed a postage-stamp size button.

That amount of current isn't useful enough to charge common electronics, such as a music player or phone. But the researchers' novel approach to harvesting energy from motion shows … Read more

Ten years from now, range anxiety for electric cars could be a thing of the past.

IBM today announced two partners for a project aimed at building a lithium air battery able to propel an electric car 500 miles. Scientists from Asahi Kasei and Central Glass with expertise in membranes and electrolyte chemistries will join IBM researchers on the initiative.

Called the Battery 500 Project, the goal is to design an "air-breathing" battery that will use oxygen from the air to drive a new type of battery chemical reaction and, in the process, deliver a big jump in … Read more

A123 Systems will need to replace defective batteries made at its Livonia, Mich., plant, costing the company $55 million.

The company announced today it has isolated the problem and will begin sending replacements battery packs and modules this week. One of the cars affected is the Fisker Karma, which Consumer Reports testers were unable to start during a review earlier month.

A defect in A123 Systems' prismatic lithium ion cells can cause batteries to short out and prematurely fail. The company said it is confident that it has isolated the problem to a single automated welding machine at its Michigan … Read more

With the auto industry pining for a battery breakthrough to lower electric vehicle costs, Envia Systems has some interesting performance data to share.

The five-year-old company today is expected to disclose technical details of its batteries which executives say could lead to cutting EV battery pack prices in half in three or four years. Envia Systems' batteries are being evaluated by a number of automakers, including its largest investor General Motors, according to CEO Atul Kapadia.

The lithium ion batteries in cars, such as the Chevy Volt or Nissan Leaf, provide ample power to accelerate a car, but the cost … Read more

Tesla Motors today detailed measures to prevent a full discharge of the batteries in its forthcoming Model S, saying drivers of the electric sedan would have to be particularly negligent to cause a costly battery replacement.

The company published a response to a blog earlier this week that recounted the problem of "bricked" Tesla Roadster batteries. The blog claimed that five owners of the Roadster electric sports car allowed their batteries to be completely discharged, rendering them inoperable.

Tesla on Wednesday did not deny the stories of Roadster battery problems but noted that Roadsters can remain unplugged for several weeks … Read more

To build a better energy storage device, startup EnerG2 is making better carbon.

The company today flipped the switch on a factory in Albany, Ore., that will turn out a resin used in the manufacture of batteries and ultracapacitors. Its engineered carbon material improves the performance of existing energy storage devices, promising lower prices for hybrid vehicles or grid storage.

The first customers for EnerG2's product are ultracapacitor makers who can expect 25 percent to 30 percent better energy storage capacity, said company COO and CFO Chris Wheaton. Lithium ion and lead acid batteries can get a three times … Read more

Beacon Power, which had received a government loan and then went bankrupt, has found a buyer, in a deal that will recoup some of the loaned money.

The flywheel energy storage company today said it has reached a deal with private equity firm Rockland Capital to buy most of its assets for $30.5 million. That includes Beacon Power's intellectual property around flywheel grid storage and a New York energy storage project partially financed by a Department of Energy loan guarantee.

If the deal is finalized, the Energy Department stands to recover 70 percent of the loan, according to … Read more