Note: If your OptiMate has the black SAE connector, you need the O4. CONNECTORS: Battery clamp to TM.
GC001 X-Connect Battery Clamp Accessories,M6 Eyelets Smart Battery Accessories for NOCO Genius Smart Chargers Accessories, Integrated Clamp Design for All Terminals
OptiMate 4 Battery Charger Optimiser Quad Program TM632 12V Lead Acid & Lithium
Optimate SAE Battery Monitor Status & Charge For Lithium And Lead-Acid O-125
Optimate O114 Battery Charger Motorcycle Smartphone Camera GPS USB Din Plug