First Use
Power options
MRX(G) Marker locators are shipped as standard configured to use Li-Ion battery packs.
The transmitter can also be powered using NiMH D-cells batteries or by the optional transmitter Li-Ion rechargeable battery pack.
It’s important to set the correct battery chemistry in the locator to optimize performance.
Transmitters can also be powered using optional accessory mains or vehicle power adapters.
On the Locator:
To connect the Li-ion battery pack unlatch the battery compartment and plug the battery lead into the battery connector.
NOTE: Fully charge your lithium-ion battery pack before its first use.
On the Transmitter:
To fit the D-cell batteries in the transmitter, unlatch the accessory tray. The battery compartment is located underneath the transmitter body. Use the turnkey to unlatch the battery compartment. Insert eight D-Cell Alkaline or NiMH batteries.
D-cell battery trays
Battery status
The locator and transmitter displays provide a battery level indicator. 
When battery replacement is necessary, the display shows a flashing battery icon.
NOTE: Prolonged use of maximum volume and vibration alerts on the locator will reduce battery life.
NOTE: Prolonged use of high power output on the transmitter will reduce battery life.
Removing / fitting battery packs
Locator battery pack:
- To connect the Li-Ion battery pack un-plug the lead connector.
To fit a new battery, lift both accessory covers slightly, then gently push the replacement pack into place until it clicks on both sides, then close the battery pack.
Installing a new battery pack
Alternative power sources
Radiodetection recommends using the Lithium-Ion battery pack for optimal performance.
Alternatively, the 3 D-cell battery tray (part number: 10/RX-MARKER-3DCELL-TRAY, sold separately) may be used, though it will significantly reduce run time.
NOTE: ALK must be selected from the BATT menu.
CAUTION: Do not use NiMH cells.
NOTE: Fully charge your lithium-ion battery pack before its first use.
Transmitter battery pack:
- Unlatch then remove the accessory tray.
- Turn the release catch, then open the battery compartment.
- Release the retaining catch by pressing gently, then lift the battery pack away.
- Line up the battery pack clips with the corresponding recesses on the transmitter body and press into place.
- Close the battery pack, turn the retaining latch and replace the accessory tray.
Release then remove the accessory tray
Opening the battery compartment
Press the release catch and lift the battery pack away
Line up the battery pack and press into position
Charging the battery packs
WARNING! Only use charging equipment provided by Radiodetection. The use of alternative chargers may cause a safety hazard and/or reduce the life of the battery.
CAUTION: Do not let your battery completely discharge as this may reduce its life or damage it permanently. If you are not using your equipment for a long period do charge them at least once a month.
WARNING! Batteries can get hot after prolonged use at full output power. Take care while replacing or handling batteries.
WARNING! Do not tamper with, or attempt to disassemble the battery packs.
CAUTION: If battery failure is suspected or if the battery shows any sign of discoloration / physical damage return the entire unit to an authorized repair center for investigation and repair. Local, national or IATA transport regulations may restrict the shipment of faulty batteries. Check with your courier for restrictions and best practice guidelines. Your local Radiodetection representative will be able to direct you to our authorized repair centers.
You can re-charge your batteries using the Radiodetection mains or automotive chargers.
NOTE: The charging temperature range is 0 to 45 °C, 32 to 113°F. Do not attempt to recharge your batteries outside this temperature range
WARNING! do not heat the rechargeable battery pack above 60°C (140°F) as this will damage the battery's thermal fuses.
Locator Li-Ion battery pack
To recharge the locator battery pack, connect the battery charger to the DC input connector on the front of the battery pack.
Charging the locator Li-ion battery pack
Transmitter Li-Ion battery pack
To recharge the battery pack, remove the pack from the transmitter and connect the transmitter battery charger.
Charging the transmitter Li-ion battery pack
For more information about recharging batteries refer to the instructions that came with your charger.