Able to last for multiple times longer than conventional AA batteries, the Profoto Speedlight Battery will keep your flashes powered up. This can produce up to 450 full-power flashes on a single charge (depending on the A-series flash model). Additionally, it is UN-certified for air travel. The battery charges in 80 approximately minutes using a separately available battery charger.CompatibilityProfoto A1Profoto A1XProfoto A10Profoto A2