Charging Smart Locks Troubleshooting Veno Pro
Sep 13, 2026
official Lockin

Lockin Battery Indicator Flashes Red and Green: What Should You Do?

Is your Lockin battery flashing red and green? The Veno Pro manual calls it a charging error. Check the battery, replace the cable and charger, then contact support.

If you searched for “Lockin battery flashing red green,” the short answer is: on a Veno Pro, the battery indicator’s continuous alternating red-and-green pattern means a charging error. Stop using that charging setup, try a suitable replacement USB cable and charger, and contact Lockin customer service if the alternating lights continue. Do not open the lock or attempt an internal repair.

What the red-and-green flashing means on Veno Pro

The Veno Pro User Manual V1.2 identifies the alternating red-and-green battery light as a battery charging error. This is different from the two normal charging states:

Battery indicator Meaning What to do
Red, steady Charging Leave the battery connected to the charging setup.
Green, steady Fully charged Disconnect it when convenient and reinstall/use it as directed.
Red and green, alternating, continuous blinking Charging error Try a replacement USB cable and charger. Contact customer service if the error remains.

So, if your Lockin battery indicator flashes red and green, it is not the normal “still charging” or “fully charged” signal. The Veno Pro manual’s instruction is to change the cable and charger first.

What to do, step by step

1. Confirm that you are reading the battery-charging indicator

The Veno Pro has several indicators. A red key light can relate to failed verification or a low-battery alert, while the palm-vein indicator can blink red when an unlock attempt fails. The red-and-green pattern in this article is the battery charging indicator, not the key or palm-vein light.

If the lights are coming from another part of the exterior assembly, check the Veno Pro user manual in Lockin’s manual library before changing the charging setup.

2. Stop the current charging attempt

Disconnect the cable from the battery and charger. Check that the cable ends and charger are not visibly damaged, wet, or contaminated. Do not force a connector, bend a port, or continue charging if you notice heat, swelling, a burning smell, or other physical damage. Move the battery away from heat and contact Lockin support for direction.

3. Verify the battery and connection

Make sure you are charging the rechargeable battery intended for your Veno Pro and that the connection is fully seated. Keep the battery and connectors dry. Follow the manual’s battery-handling instructions; do not remove the lock’s housing, bypass the charging circuit, or substitute an unverified battery pack.

4. Try a suitable replacement USB cable and charger

The manual’s first remedy for a red-and-green charging error is to try replacing the USB cable and charger. Use a suitable, undamaged replacement and make one controlled charging test. Avoid repeatedly swapping random adapters while the battery is unattended.

Watch the indicator during the test:

  • Steady red: the battery is charging normally.
  • Steady green: the battery reports fully charged.
  • Continuous alternating red and green: the charging error remains; stop troubleshooting and contact Lockin.

This simple test helps separate a cable-or-charger problem from an issue that needs product support. It does not prove that the battery or lock electronics are healthy if the light returns to normal only briefly.

5. Use a backup entry method if the lock needs power

The Veno Pro product page lists a mechanical-key backup and power-bank emergency access. A charging error is not the same as a completely depleted battery, but you should keep a backup available while the issue is unresolved. Do not depend on the app alone if the lock cannot maintain power.

For broader planning, see Lockin’s FAQ and the Veno Pro product details. The product page also describes a low-battery alert at 10%; that alert is separate from the red-and-green charging-error pattern.

When to stop and contact Lockin

Contact Lockin customer service if the Veno Pro battery indicator still flashes red and green after you have tried a suitable replacement cable and charger. Include:

  • Your order number and proof of purchase, if available.
  • The lock model and battery details.
  • A short description of the light pattern and when it appears.
  • The cable and charger you tested.
  • Any unusual heat, odor, swelling, visible damage, or recent liquid exposure.

Lockin lists support at support@lockin.com. Do not disassemble the lock or battery while waiting for instructions. Unauthorized modification or disassembly can complicate warranty support and may create a safety risk.

Do not confuse this signal with other Veno Pro battery questions

The red-and-green pattern answers one narrow question: the Veno Pro is reporting a charging error. It does not tell you that the battery is simply full, that the lock has reached its expected runtime, or that you need a higher-capacity battery.

If the indicator is steady red or steady green, follow the normal charging state instead. If the lock reports low battery, use the backup plan and recharge or replace the battery as directed. If the indicator remains alternating red and green after the cable-and-charger test, the right next step is Lockin support—not repeated charging experiments or opening the hardware.

The short answer

When your Lockin battery indicator flashes red and green, the Veno Pro manual defines it as a charging error. Confirm the exact Veno Pro battery, try a suitable replacement USB cable and charger, and contact Lockin customer service if the alternating pattern continues. Keep the mechanical key or emergency power option available until the charging problem is resolved. That is the complete answer to “Lockin battery flashing red green” for this model.

Updated September 13, 2026