How do small batteries, such as the Optima & Odyssey produce high power?
This new range of engine start batteries have been specifically designed to provide extreme high current very quickly whilst maintaining a high stable voltage. This is only possible if internal resistance is very low. This is achieved by using pure lead for plate construction. Ordinary batteries use lead-calcium alloy plates with a higher resistance that limits power output in high rate applications. Usually very large and heavy batteries – generally in excess of 100Ah are specified to compensate for this limitation.
