Batteries

The most common batteries used in conversions today are deep-cycle lead-acid batteries. Although Nickel Metal Hydride (NiMH) batteries are being used by the auto manufacturers for their EVs they are not available to the average EVer building their own EV.

The deep-cycle lead acids are divided into two groups: flooded batteries, also known as wet cells, and sealed batteries, also known as valve-regulated lead-acid (VRLA) batteries.

Flooded batteries are available in 6 and 8-volt versions from Trojan battery and US Battery. Flooded batteries are inexpensive, can take some abuse, and have a high energy density which makes them a good choice for range. They can last anywhere from three to five years. On the down side they are heavy, up to 70 pounds each, and have high internal resistence which doesn't appeal to the racing set. For distance and cost they are a good bet.

The most popular 12-volt sealed batteries used in EVs today are the Optima Yellow Tops and Genisis Hawker batteries from GNB. Sealed batteries are lighter then wet cells, have low internal resistance and can be installed in various positions. On the downside they are expensive, have a shorter lifespan and limited range. To increase range the batteries can be run in parallel strings which increases the amp/hour capacity of the pack.

Next step is to gather the tools and supplies.

Electric Auto Assoc. Promoting the Use of EVs since 1967

EV List Photo Album
Check out EVs from members of the EV Discussion List

EV Rental
Rent an EV on your next trip to LA

EV World
The premeire EV news site

Electric Vehicle Association of the Americas
Advancing EV technology and infrastructure