

① Function button
② LED indicators
③ Compass
④ Jumper cables
⑤ LED display
⑥ Power switch
⑦ Flashlight
⑧ USB-C input port
⑨ USB output ports
⑩ Jumping port
1. Turn on your Roav Jump Starter Pro and make sure it is over 50% charged.

If it is less than 50% charged, it may not be able to start your engine. We recommend fully charging the battery before you use the jump starter for the first time.
2. Plug in the jumper cables. The LED display on the jump cables should show
circulating clockwise.

3. Connect the red clamp to the positive terminal ( + ) and black clamp to the negative terminal ( - ) of your car battery.

4. Start your engine. The cables’ LED display should show the current voltage of the jump starter battery.

The jump starter will stop power output after 20 seconds, and
will flash on the LED display.
5. After successfully jump starting, unplug the jumper cables within 30 seconds.

1. After every successful jump start, the jump starter will reset automatically. If it fails to jump start your car, remove and reconnect the clamps after two minutes. After the LED display shows the voltage, start the car engine.
2. Do NOT jump the car engine more than three times continuously as it may overheat or damage the product.
6. Promptly remove clamps from the car battery and put away

To avoid serious injury to a person or damage to the jump starter, never try to connect the two clamps together when plugged into the jump starter.
1. The table below indicates the jump starter is working properly
| LED Display | Buzzer | Description |
| The current voltage | / | The clamps are connected correctly. Ready to start the car engine. |
2. The table below shows the error status. Never try to force jump the car engine when the LED display shows as below.
| LED Display | Buzzer | Description |
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/ | Clamps connected to a car battery (not connected to the jump starter) Make sure the clamps are connected to the jump starter before starting your engine. |
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Beeps once per second | Clamps connected to incorrect terminals |
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Beeps once per second | Car battery is trying to charge the jump starter, but the charging is prevented by the clamps. We recommend removing the clamps and then connecting again. |
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Beeps once per second | Clamps connected together (may damage the jump starter) |
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/ |
• Clamps connected to a car battery but connection is over 20 seconds. • Car battery is working. No need to use the jump starter, you can try starting car engine again. • Failed to jump start a car as the peak current (800A) is not high enough to start the car engine. |
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Beeps once per second | Temperature limit exceeded. Let the jump starter and cables cool down. |
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Beeps once per second | The voltage of the jump starter is low. We recommend charging the jump starter first. |
![]() |
/ | Clamps connected to the jump starter, and are ready to be connected to a car battery |




This product complies with the radio interference requirements of the European Community.This product can be used across EU member states.
This product is designed and manufactured with high quality materials and components, which can be recycled and reused.
This symbol means the product must not be discarded as household waste, and should be delivered to an appropriate collection facility for recycling. Proper disposal and recycling helps protect natural resources, human health and the environment. For more information on disposal and recycling of this product, contact your local municipality, disposal service, or the shop where you bought this product.
FCC Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Warning: Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
SAVE THESE INSTRUCTIONS – This manual contains important safety and operating instructions for the jump starter (Model R3120).
Please read and understand all instructions before using this product. If damage is caused by failure to follow the instructions, the warranty does not apply.