OptiMate USB O-108

MSRP $33.95

Smart in-line 3300mA USB charger, with standby mode & vehicle battery monitor.

The fully sealed in-line SAE to USB 3300mA charger with 150cm / 60″ of cable (also available: the O-108KIT with 150cm / 60″ of cable + 50cm / 20″ O-31 battery lead), delivers safe and fast USB charging to your phone or other device that needs charging, either on the handlebar or inside your tankbag or pannier – Charge cable routes to where USB charging is needed!

  • Connects to battery lead with industry standard SAE 2-pin connector – In-line seal makes 12V connection weatherproof!
  • Charges 1x USB device with up to 3300mA current available (or get optional O-110 USB splitter and charge 2 devices). – Charge current adapts to connected device for safe recharging.
  • Weatherproof USB charge port easily zip-tie to handlebar, strut or even brake / clutch cable – Seals againt inserted USB cable for charging in any weather!
  • Built in protection turns off USB charging & prevents your parked vehicle’s LFP (LiFePO4) or AGM (Pb) battery from draining Starts back up when vehicle engine fires up. 
  • Monitors and displays parked vehicle’s battery status – Indicates battery is ‘start ready’ at the blink of an LED!





SKU: O-108 Categories: , ,


MSRP = Manufacturer Recommended Retail Pricing. Price in EURO and GBP include VAT of 20%. VAT in your region may differ. Price in USD and CAD do not include sales tax.


SKU: O-108

SKU: O-108

SKU: O-108

SKU: O-108


Charge your phone, GPS, camera & tablet with your weatherproof charger, on your motorcycle or up to 80″ / 200cm away from 12V supply.

LENGTH: 60" / 150cm


POWER (INPUT): Vehicle 12V system with 12V lead-acid or 12.8V lithium battery.


POWER (OUTPUT): 3300mA @ 5V

OPERATION:  fully automatic

  • Vehicle battery protection: Low input (<12.4V) auto-off protects vehicle battery from total discharge. Supply range: 12.4 to 16Vdc.
  • Turns on if vehicle battery voltage increases above 13.3V.
  • 2 LED battery monitor
  • Short circuit, overheat, over-voltage protection.


  • USB ON - 13.3V to 18V – unlimited USB output, USB LED on. Delivers USB power when vehicle engine is charging battery.
  • USB 1 HOUR - 12.4V to 13.3V – 1 hour USB output, USB LED on. Go to standby mode after 1 hour or voltage < 12.4V.
  • STANDBY MODE – Monitoring voltage, turns back on if vehicle battery voltage increases above 13.3V.
  • AGM / LFP MONITOR - LED blink every 5 seconds if battery charge ≥ 50% , sufficient to start vehicle engine.
    • LED LFP: 13.1V to 13.3V.
    • LED AGM: 12.4V to 13.1V.
    • NO LED < 12.4V.
  • OFF ≤ 9V


USE: -20°C/-4°F very low temperature, remains flexible at ‘below freezing’ temperatures

STYLE: Fully enclosed electronic circuitry with multiple LEDs, unique seal and cap design for USB socket ; use any USB cable, seals when inserted.

WARRANTY: 3-year limited replacement warranty


USB Product

Vehicle Connection

Special use