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Watson Duo LCD Charger for L & M Series Batteries

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Quick Overview

  • Charges Two Batteries Simultaneously
  • Interchangeable Battery Plates
  • LCD Screen for Charge Status
  • Includes AC Cord & DC Car Adapter
  • USB Power Output (5V DC)

Watson Duo LCD Charger


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The Duo LCD Charger for L & M Series Batteries from Watson conveniently charges two batteries simultaneously, drawing power from either an AC wall source (an AC cord with two-prong plug is included) or a 12/24V DC power source (a DC car charger is also included). Additionally, the Duo Charger features a USB power output to charge and power MP3 players, phones, digital cameras, and other devices with a USB power input.

With two easily interchangeable plates, this charger can also be used for other battery models via the separate purchase of a compatible additional battery plate.

The intelligent charger features an LCD display that graphically shows charge status for both batteries. This allows you to test batteries instantaneously, so you can easily decide which Li-ion cells to bring with you for the day. With protection against overcharging, overheating, and short circuit, the Duo Charger safely, conveniently, and quickly recharges up to two compatible Li-ion batteries and one USB-powered device.

Dual Bay Charger

Charges two batteries simultaneously.

LCD Display

The LCD display shows charging status, charging voltage, USB output, and DC output.

USB Output

Charge or supply power for MP3 devices, mobile phones, digital cameras, and other related devices with a USB power input--even while you're charging your digital camera or camcorder batteries. USB output is also displayed on the LCD.

Test Button

Test the charge of a battery even with the Duo Charger unplugged by sliding the battery into the charging plate and pressing the Test button. Press the button a second time to display the voltage of the battery.

Safety Features

Short-circuit protection, overcharge protection, and overheat protection.


Sony NP-F550, NP-F570, NP-F730H, NP-F750, NP-F770, NP-F930, NP-F950, NP-F960, NP-F970, NP-FM30, NP-FM50, NP-FM500H, NP-FM55H, NP-FM70, NP-FM90, NP-FM91, NP-QM71, NP-QM71D, NP-QM91, and NP-QM91D type.


Power Input100-240 VAC, 50/60 Hz, 12/24 VDC, 2.0 A
Power Output1.2-8.4 VDC, 2.0 A (max),
Additional OutputUSB 2.0, 5 VDC, 1 A (max), for charging USB devices
Charging Time2-6 hours
Operating Temperature32 to 104°F (0 to 40°C)
Storage Temperature-4 to 140°F (-20 to 60°C)
DimensionsCharger: 4.9 x 4.5 x 1.8"" (12.5 x 11.5 x 4.5 cm) , Cord length: 4.7 ft (1.4 m)
Weight.5 lb (218 g)


Packaging Info  
Package Weight 1.35 lb
Box Dimensions (LxWxH) 9.7 x 6.3 x 2.6"
Manufacturer Watson

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