Standard battery charger for the Li-Ion battery for B10. Recharges the B10 battery in less than 90 minutes. A charge status LED lets you know when the charging is ready. The charger can also be plugged to the Profoto B10 battery to prolong battery runtime if the Profoto B10 is used in studio. A Velcro strap on the charger lets you attach it to a light stand.