Additional battery for the Walimex pro Studio Mover 400 TTL battery flash for more mobile power. Perfect for on the go. The small energy giant ensures that your Walimex pro Studio battery flash Mover 400 TTL does not run out of power in advance. When fully charged, 500 flash triggers are possible with full power and thus continuous work. The recharge time is approx. 4 hours. With a second battery, this time can be usefully bridged. Use the original charger of the Mover 400 TTL to charge.