Urbana, MO: Troubleshooting a Tesla Powerwall Backup System

Batteries aren't set-and-forget. In spring 2026 our crew went out to a Tesla Powerwall system in Urbana, MO that was reporting site-meter faults.

What we did

• Opened up and checked the Backup Gateway 2 wiring and terminations.
• Took meter readings at the gateway and the Powerwall to isolate the fault.
• Worked with Tesla support. Site-meter issues usually trace back to the current transformers (CTs), and hardware that needed replacing went through Tesla's warranty process.

Takeaway

When a battery acts up, the fix comes from careful testing, not guesswork. If your Powerwall, FranklinWH, or Enphase battery is throwing errors, call Solar Sam at (573) 819-9623. We're based in Columbia, MO.