many – Energy and Earth

[New Release] Poweradd High Efficient 40W Foldable Solar Panel Portable

June 21, 2015
EaE
Solar Main
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Constructed of SUNPOWER® solar arrays, solar conversion efficiency up to 23.5%.USB port(5V/2A) for charging your 5V powered gadgets, and 18V DC output(18V/2.2A) for charging your laptop or other 18V powered devices.Uniqued voltage regulater design to ensure stable voltage and current,…

Redox battery promises to hold many megawatts

October 12, 2012
EaE
Energy and Earth
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Unlike conventional batteries that store reactive materials in cells, a flow battery stores electrolytes in tanks, one for positive reactions and another for negative. To make a utility-scale system, the standard 7 kW-rated VRB cell stacks are assembled to build 200-kW…