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$13.95
| Voltage | WPC | AH/kVA | Length | Width | Height | Weight |
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| Weight | 1 |
The Tesla Powerwall 3 Spare Bolt-On Expansion Port Cover (1893723-00-B) is a replacement cover for an unused Powerwall 3 battery expansion port. It closes the connection when an expansion harness is not installed, helping protect the interface from moisture, dust, and debris.
Designed as a model-specific service replacement, this accessory is suitable for replacing a missing or damaged matching cover during installation or maintenance. It is a port-cover assembly—not an expansion cable, battery module, or capacity-upgrade kit.
| Category | Detail |
|---|---|
| Product | Tesla Powerwall 3 Spare Bolt-On Expansion Port Cover |
| Tesla Part Number | 1893723-00-B |
| Catalog Description | Spare Bolt-on Portcover, PW3 |
| Product Type | Replacement expansion-port cover assembly |
| Equipment Platform | Tesla Powerwall 3 (PW3) |
| Primary Function | Covering an unused battery expansion port |
| Attachment Method | Bolt-on, screw-retained cover |
| Fastener Tool | Torx T40 |
| Replacement-Cover Screw Torque | 100 in-lb (11 N·m), per Tesla installation instructions |
| Listing Scope | Replacement port-cover assembly; Powerwall equipment and expansion harnesses are not included |
Tesla documents that an expansion port left open, with its cover removed and no harness connected, can trigger a Battery Expansion – CAN Termination Issue alert. Use the specified cover on unused ports rather than an improvised blanking plate, and investigate any remaining alerts using Tesla’s applicable troubleshooting procedures.
Confirm Tesla P/N 1893723-00-B against the equipment’s service requirements before ordering. This is the expansion-port cover, not the Powerwall 3 On/Off switch cover or glass front cover. Verify the required hardware revision and included fastening and sealing components with the supplier.
