The Duo LCD Battery Charger II from Watson charges 1 or 2 batteries of various types via dedicated interchangeable plates, which are required and available separately. The Duo Charger can simultaneously charge 2 different battery types with different voltages. It runs on 100-240 VAC power, allowing for use all over the world. The charger also features a USB 2.0 port for charging another device simultaneously. The LCD screen provides a digital read-out of each battery's charge percentage while charging and can also show a battery's charge status via the battery test button, even when the charger is unplugged. Integrated detection circuits protect batteries from overheating while charging by automatically stopping the charging process, and also guard against dangers such as defective batteries or short circuits. The Duo includes a power cord with a 2-prong US plug, as well as a 12 VDC car charger that plugs into a cigarette lighter.

Watson Duo LCD Battery Charger    For EN-EL12    Accepts Interchangeable Battery Plates    100-240 VAC Power for Worldwide Use    Charging Time: 2-6 Hours    USB 2.0 Port for Charging Other Devices    Digital Read-Out of Charge Percentage    Power Cord    12 VDC Car Charger

• Accepts up to two Watson interchangeable battery plates, available separately

• Simultaneously charges two batteries independently

• Overcharge and overheat Protection

• LCD screen displays charging status

• USB output charges mobile devices

• 12 VDC car adapter allows mobile charging

Related Questions and Answers

Q: 1. 1) Will this charger charge the OEM batteries fully, and 2) will these batteries charge in the OEM charger? Some 3rd party batteries won't.

A: Yes, the Watson Duo LCD charger will fully charge OEM batteries, and Watson batteries will charge in the OEM charger.

Q: 2. What is the capacity of these batteries?

A: It's a battery charger, not the batteries themselves.

Q: 3. Can complaints about the battery-holder-plates being insecure be solved with tape or gaffers tape applied to the side and bottom of the plates??? Is it feasible to secure them in some manner like this???

A: I have not been able to solve this problem by placing tape or cardboard underneath the plates.

Q: 4. When charging is complete does unit shut off or go into trickle mode?

A: I have been using these Watson charges for years, charging batteries from Nikon, Olympus, Fuji and Sony without any problems. Once charge is completed, the unit appears to go into trickle mode.

Q: 5. I have noticed that this, and other "after-market" chargers only have two pins while the Fuji charger has 4. How does this charger work properly when it is not making contact with all the plates on the battery?

A: The Watson Duo LCD Charger with Two NP-W126 Battery Plates charge fuji batteries properly with no issues.

Q: 6. Can I charge my Nikon D500 & D850 battery with the Watson EN-EL15 Battery Plate?

A: Yes, the Watson plate is compatible with those batteries.

Q: 7. Is there a plate for the Watson charger that supports the Olympus BLS-50 battery?

A: You can use this plate for the Olympus BLS-50 battery: https://bhpho.to/3pKR9C4

Q: 8. if I am in a remote location with an external power source, can the usb be used to connect to the power source to charge the battery?

A: No - the available power sources to charge batteries on the Watson charger are mains power or cigarette lighter - the USB on the device is for output only to change tablet/mobile phone.

Q: 9. Is it possible to use it for the batteries of Nikon z8?

A: The Watson Duo LCD Charger with Two EN-EL15 Battery Plates can charge the Nikon EN-EL15c Rechargeable Lithium-Ion Battery for the Nikon Z8 Mirrorless Camera.

Q: 10. Can this be used with en-el15a batteries?

A: Can be used with any port plate call b.h see if they have the shoe for el15a batteriesCharger works wonderful