The removable Li-Ion Battery for ELB 500 TTL is a power source that provides 400 full-power flashes or 28,000 minimum-power flashes on a full charge. The packs Active Charging ability allows the battery to be charged when shooting while powered by AC current. The battery has no memory effect, making it immune to partial charging and discharging. A built-in Automatic Fault Detection System will disconnect the battery if temperature, voltage, or current levels exceed safe ranges.
