Why are my trailer lights dimming, flickering, or cutting out?

Please take a moment to watch the video below for step-by-step guidance, or follow the step-by-step written directions.

If you need additional help, our After Sales team at Escape Trailer will be happy to assist you. You can submit a support ticket using this form. 

1. Notice the symptom

• Watch for RV lights that:
  • Dim and brighten repeatedly
  • Flicker or pulse
  • Cut out when you turn on other appliances

2. Understand the most likely cause

• These symptoms are almost always caused by low battery voltage.
• Think of voltage like water pressure:
  • Battery = pump
  • Voltage = pressure pushing electricity through your RV

3. Identify your battery type

• Check whether you have:

  • Lead-acid battery
  • Lithium battery

• This matters because they behave differently.

4. If you have a lead-acid battery

• Expect voltage to slowly drop as you use power.
• Typical behavior:
  • Fully charged: about 12.6 volts
  • As you use power: voltage steadily decreases
• When voltage gets low:
  • Around 10.5 volts under load
  • You may see:
    • Dim lights
    • Flickering or pulsing lights
    • Electrical cutouts

• What this means:

  • The battery is getting low and needs recharging.

5. If you have a lithium battery

• Voltage stays mostly steady until nearly empty.
• You usually will NOT see dimming or flickering.

• Instead:

  • Everything works normally
  • Then suddenly:
    • Power shuts off completely

• What this means:

  • The battery’s Battery Management System (BMS) has shut it down to protect it.

6. Do a quick voltage check

• Use a voltmeter to confirm battery status:

  • Lead-acid battery:
    • Below ~11 volts = needs charging soon
  • Lithium battery:
    • Below ~12 volts = getting close to empty

7. Take action

• If voltage is low:
  • Recharge the battery fully
• After charging:
  • Lights and systems should return to normal