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Batteries have to contain all of the chemicals on both sides of their energy releasing equation. The very best batteries available today can store about 0.4 MJ/kg (0.05 kw-hr/lb) including the cases and safety systems. In contrast, gasoline carries about 46 MJ/kg (5.7 kw-hrs/lb).\n\nEven with a 20% efficient IC engine, a gasoline tank stores 20 times as much energy as a battery of equal weight. As the vehicle is moving it gets rid of some of that weight. Battery powered vehicles must carry the full weight of their energy source.\n\nThe energy density difference also plays a key role in the time that it takes to put more energy back on the vehicle once a fuel load is consumed. A two minute fill-up of a 12 gallon tank puts the equivalent of 87 kilowatt-hours into the vehicle, again, taking into account the 20% thermal efficiency.\n\n87 kilowatt-hours in 2 minutes works out to 2.6 MegaWatts. Even with a 220 volt connection, that would require about 11,800 amperes of current. Just imagine the size of the electric cables for that current.\n\nThere are certainly places and applications where electric vehicles have a role, but it is worth remembering that at least five or six generations of engineers have looked very hard at trying to meet transportation needs and they keep coming back to the same fact - when you want to move a vehicle, you need power, (energy per unit time).

Well ... time will tell whether plug-in hybrids will be a "licence to print money scheme" or a technology to balance the grid. Because there is a reason for the peak - we all use energy according to the same pattern, driven by day-night, office hours and schools.

Electric Car Conversion Kits are equipments and components that can be used to convert a Gas Powered Car to Electric. There are a few different types - AC kits, DC kits, custom kits, universal kits etc - the kits you end up using will depend on your budget, and your need. Once you build your Own Electric Car you will completely eliminate Gas cost and never pay for gas again, Qualify for up to $1000 IRS refund for driving a clean fuel vehicle. Electric car kits vary in cost depending on make and quality and can be quite expensive. This lens looks into how you can put your own electric car conversion kit together and use it to build your electric car thus avoiding the high cost of of electric car conversion kits or buying a new elctric car.

BAE Systems Demonstrates Hybrid-Electric Drive System for Ground Combat Vehicles 15 August 2007 The NLOS-C self-propelled howitzer is the first application of the common hybrid drive system. BAE Systems demonstrated the first hybrid-electric drive system for ground combat vehicles as part of the US Army's Future Combat Systems (FCS) program. The Traction Drive Subsystem (TDS) for the FCS program is a diesel series-hybrid drive system that will provide vehicle propulsion, steering and braking, and regenerate electrical power from braking and downhill grades for use in vehicle electrical systems

On electric vehicles, we need to be very careful to distill the announcements which represent real products, backed up by organisations with manufacturing facilities.

The Ampera is an electric vehicle that can operate in a wide range of weather climates. It is powered by electricity at all times and speeds. For the first 40 - 80 km, power is supplied by the electricity stored in the 16-kWh, lithium-ion battery. While driving on electricity delivered by the battery, the Ampera drives free of gas- and tailpipe-emissions.

NRG Energy has opened its first eVgo direct-current electric vehicle charging station in Dallas, Texas, today as part of a privately funded 70-station network