For AD400Pro II AD400Pro Flash, Due to the Battery Upgrade, If You Haven't Used the Battery for More Than a Month, It Will Automatically Go to Sleep. Please Try to Activate It If You Use it or Charge it Again After a Month. Activation Method: Short Press the Battery Indicator Button to Activate(the Button Is to the Left of the Indicator)
390 Full-Power Flashes per Charge,a fast recycle time of 0.01 seconds to 1 second
DC21.6V/2600mAh/56.1Wh ,anti-oxidation coating ABS shell and long cycle life, perfect for any shoot.
Adopting superior material and advanced technology, high energy density, has the characteristics of strong safety, high power output, long battery life.
Battery Maintenance: 1. The battery accessory of the Godox speedlight needs to be charged with the original charger; 2. Please charge the battery to approx. 80% before being placed for long time; 3. Please occasionally charge the battery or turn on the flash when it is unused, If the battery had ceased use for over 2 months, please make a full recharge