de fr es




United Kingdom

United States


Merger LRF
Merger LRF

Table of contents

Battery Charging

Merger LRF binoculars are supplied with a removable and rechargeable APS3 lithium-ion battery pack and a built-in rechargeable lithium-ion battery. The batteries should be charged before first use.

The icons  in the status bar will flash when the battery is low. The batteries need to be charged.

Option 1


  1. Install the APS 3 battery (11) in the battery compartment (14) of the device.
  2. Connect the USB Type-C cable (21) to the USB Type-C connector (17) of the device.
  3. Connect the other end of the USB cable (21) to the Power Adapter (22) by removing the USB Type-A adapter.
  4. Plug the Power Adapter (22) into a 100-240 V socket.
  5. Wait until the batteries are fully charged (indication in the status bar: ; 1 - built-in battery, 2 - removable battery).

Note: next to the USB Type-C connector (17) on the device body there is a light-emitting diode (24) to indicate the battery charge level when the device is switched off.

(24) LED indication

Battery status

Batteries are charging

Batteries are charged

One of the batteries is defective. The device must not be used. The defective battery should be replaced.

Contact Pulsar service to replace the internal battery.


There is no external battery in the device, or the device is switched on

Attention! When charging rechargeable batteries via a USB Type-C connector (17) in the device body section:

  • Charging priority is given to the built-in battery.
  • When the device is off, both batteries are charged at the same time. When using the device, the external battery is discharged first.
  • Built-in and removable batteries support USB Power Delivery fast charging technology when using the USB Type-C cable and power adapter supplied with the device.

Option 2

  1. Insert the Battery Pack (11) along the rail into the APS charger (18) slot as far as it will go. The APS charger is supplied with your device or purchased separately.
  2. Point A on the battery and point B on the charger should match.
  3. Connect the USB Type-C plug of the USB cable (21) to the port (19) of the charger (18).
  4. Connect the second plug of the USB cable (21) to the USB port on the power adapter (22).
  5. Plug the device into a 100-240 V socket.
  6. The LED indicator (20) will display battery charge status.
  7. Wait until the battery is fully charged (LED indication (20): ).
  8. Two batteries* can be charged at the same time: the second slot is designed for it.

(20) LED Indicator**

Battery Charge Status

Battery level is from 0% to 10%. Charger is connected to a power supply.

Battery level is from 0% to 10%. Charger is not connected to a power supply.

Battery level is from 10% to 20%.

Battery level is from 20% to 60%.

Battery level is from 60% to 95%.

Battery completely charged. Charging will automatically stop. The battery can be disconnected from the charger.

Defective battery. Do not use the battery.

* Purchased separately.

** LED indicator displays the current battery charge status for 30 seconds when the APS charger is not plugged in. When the power is being supplied, the indicator is constantly displaying the current battery charge status, the LEDs are additionally flickering to display the battery charging process.