Does the SRAM card have a battery?
Yes. There is a small lithium coin cell in the SRAM card. The purpose of this battery is to keep the data alive in the card’s memory. When the battery dies, all the data in the card is lost. There are some SRAM cards that actually have two batteries, one very small one to keep the data while changing the main batteries. The life of the battery in the SRAM card depends on its memory capacity. The batteries in 1MB SRAM cards usually last three years or more. The batteries in a 2MB are typically good for about two years.
