Optimate O-118
OptiMate USB O-118 Motorcycle USB-C Charger User Manual
Smart In-Line 3300mA Charger with Standby Mode and Vehicle Battery Monitor
Introduction
The OptiMate USB O-118 is a sophisticated in-line 3300mA USB-C charger designed specifically for motorcycles. It features a standby mode to prevent battery drain and an integrated vehicle battery monitor for optimal power management. This manual provides essential information for the proper installation, operation, and maintenance of your O-118 charger.
Key features include:
- Powerful 3300mA USB-C port for efficient device charging.
- Long 80-inch (200cm) cable for flexible mounting options.
- Includes O-31 battery lead for universal compatibility with motorcycle batteries.
- Weatherproof design with built-in protection for automatic power management.
- LED indicator for real-time battery status monitoring.
Package Contents
Verify that all components are present in your package:
- OptiMate USB O-118 In-line USB-C Charger Unit
- O-31 Battery Lead with 10A Fuse
- USB-C Cable (integrated)
- Rubber Cap for USB-C Port
- Cable Ties (typically two yellow ties)

Setup and Installation
Follow these steps for proper installation of your OptiMate USB O-118 charger:
- Connect to Battery: Attach the O-31 battery lead's ring terminals to your motorcycle's battery terminals. Ensure the red terminal connects to the positive (+) post and the black terminal connects to the negative (-) post.
- Secure Fuse: The O-31 battery lead includes an in-line 10A fuse. Ensure it is properly seated and protected.
- Connect Charger Unit: Connect the O-31 battery lead to the main O-118 charger unit. The connectors are designed to be weatherproof.
- Mounting: Route the 80-inch (200cm) USB-C cable to your desired charging location (e.g., handlebar, tank bag, pannier). Use the provided cable ties to secure the cables and prevent snagging or interference with moving parts.
- Protect USB-C Port: When not in use, always cover the USB-C port with the integrated rubber cap to protect it from water and dust.


Operating Instructions
The OptiMate USB O-118 features intelligent power management to protect your motorcycle's battery.
Automatic Operation:
The charger automatically activates when the vehicle's battery voltage rises above approximately 13.3V, indicating the engine is running or the battery is being charged by the vehicle's alternator. It will automatically turn off when the voltage drops below this threshold or after approximately one hour of inactivity (no charging activity detected), entering a standby mode to prevent battery drain.
Battery Monitor LED Indicator:
The O-118 unit includes an LED indicator that provides real-time feedback on your motorcycle's battery status. Refer to the diagram below for interpretation:

| LED Indication | Battery Voltage (Approx.) | Status |
|---|---|---|
| Green LED On | > 12.7V | Battery Good / Fully Charged |
| Yellow LED On | 12.4V - 12.7V | Battery Discharged / Needs Charging |
| Red LED On | < 12.4V | Battery Critically Discharged |
| No LED On (Standby) | < 13.3V (after 1 hour of inactivity) | Charger in Standby Mode |
Note: The exact voltage thresholds may vary slightly depending on the battery type (e.g., AGM, Flooded, LiFePO4) as indicated on the product packaging diagram.
Maintenance
The OptiMate USB O-118 is designed for durability and minimal maintenance. However, regular checks can ensure its longevity and optimal performance:
- Cleanliness: Periodically wipe the unit and cables with a damp cloth to remove dirt and grime. Avoid using harsh chemicals.
- Connections: Ensure all connections (battery terminals, charger unit connection) remain secure and free of corrosion.
- Cable Integrity: Inspect the cables for any signs of wear, cuts, or damage. Replace the unit if significant damage is found.
- USB-C Port Cap: Always ensure the rubber cap for the USB-C port is properly sealed when not in use to maintain its weatherproof rating.
Troubleshooting
If you encounter issues with your OptiMate USB O-118, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No LED indication / Charger not activating. |
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| Device not charging when connected. |
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| Battery drains quickly after installation. |
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Specifications
| Attribute | Detail |
|---|---|
| Brand | Optimate |
| Model Number | O-118 |
| Manufacturer | TecMate |
| Power Source | Battery Powered (12V Motorcycle Battery) |
| Output | USB-C, 3300mA (3.3A) |
| Cable Length | 200cm / 80 inches |
| Dimensions (L x W x H) | 4.53 x 0.98 x 0.59 inches (approx. for main unit) |
| Item Weight | 5.3 ounces |
| Safety Certification | CE |
| First Available Date | August 8, 2023 |
Warranty and Support
The OptiMate USB O-118 comes with a 3-year warranty, as indicated on the product packaging. For warranty claims, technical support, or further inquiries, please contact TecMate, the manufacturer of OptiMate products.
You can find more information and support resources on the official OptiMate website:
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