Batteries & Power Accessories

Relay Camera Couplers work in tandem with the Case Relay Camera Power System to keep your camera powered continually with an external 5V USB battery pack or wall power. The Relay Coupler is simply an insert for your camera battery cavity that enables powering the camera via Case Relay Camera Power System. The coupler does not contain a battery or hold a charge.

• For Z 50 Mirrorless Camera
• Charge with MH-32 or EH-7P AC Adapter

• For Canon Rebel T3, T5, T6, T7 Cameras

Two batteries are better than one, but only if they are charged and ready for action. The ProMaster Dually Charger can charge two batteries simultaneously, or just 1 if required. It is compact and convenient with a USB-A input cable that neatly stores itself in the bottom of the charger.

Since it draws power from USB sources, you can use the Dually Charger with a USB AC Adapter (not included), laptop, power bank, car charger, and more.

Two batteries are better than one, but only if they are charged and ready for action. The ProMaster Dually Charger can charge two batteries simultaneously, or just 1 if required. It is compact and convenient with a USB-A input cable that neatly stores itself in the bottom of the charger. 

Since it draws power from USB sources, you can use the Dually Charger with a USB AC Adapter (not included), laptop, power bank, car charger, and more.

ProMaster batteries are a high quality, long lasting power source for your digital camera or camcorder. ProMaster replacement batteries are manufactured to meet or exceed the equipment manufacturer's specifications.

• Multi-Voltage
• Charges Battery in 80 Minutes
• Includes Power Cable

• Rechargeable lithium-ion battery
• For select EOS DSLRs 
• Charge with the LC-E17 Battery Charger.

• Battery charger for W Series battery
• Charge from AC power supply
• Compatible with W Series battery cameras
• Check the power status level while charging
• Compatible with W Series battery

• Fits: Sony Alpha NEX-3, 5, 6 and 7 Series Cameras, DSLR-SLT-A33, DSLR-SLT-A55