20A DIODE W/ 5/16 RING

A 20‑amp inline diode with:

• 5/16" ring terminal on at least one end

• 12V–24V compatibility

• One‑way current flow (prevents battery drain or reverse feed)

• Often used between:

  • Trailer battery ↔ tow vehicle charge line

  • Solar panel ↔ battery

  • Auxiliary battery ↔ main battery