OptiMate O-11 x20 Heavy Duty Weatherproof Premium Battery Lead Bulk Pack (20-Count) with Adaptable M8-M10 Ringlets for Automotive, Marine, and Industrial Batteries

The OptiMate O-11 x20 is a professional bulk-pack containing 20 of our heavy-duty, weatherproof premium battery leads, designed to create quick-connect permanent charge access for fleets or multiple automotive, marine, and industrial 12V batteries. Engineered specifically for larger battery terminals, each lead bolts securely onto round battery posts or built-in bolt terminals, allowing you to easily connect smart chargers or vehicle accessories via a standard, protected SAE connection without ever tearing into a battery compartment again.

Features and Benefits

• Professional 20-piece bulk pack — Ideal for commercial shops, battery specialists, fleet managers, or powersport dealerships looking to outfit multiple vehicles with heavy-duty permanent leads.

• Adaptable dual-ring technology — Engineered with unique, heavy-duty molded ring terminals that default to 5/16" (M8) but are easily adaptable to 3/8" (M10) to cleanly fit any major automotive, marine, or industrial battery post.

• SAE quick-connect access — Provides an immediate hookup point; just plug your charger or 12V accessory directly into the robust SAE sleeve for instant, reliable power transfer.

• Length: 50 cm (20″) cable offers the perfect amount of slack to route your connection safely away from moving parts to an easily accessible spot.

• High-capacity current delivery — Safely rated for a 10A continuous average and up to a 13A max current rating, making it robust enough for heavier electrical demands.

• 16 AWG / 1.31 mm² cable — Features thick, premium copper wiring paired with heavy-duty SPT-2W insulation for superior durability, low resistance, and maximum abrasion protection.

• Inline safety protection — Each lead includes a built-in 15A fuse to thoroughly shield your vehicle’s wiring, equipment, and battery charger from hazardous electrical shorts.

• Protected SAE connection system — Designed with built-in zip-tie and Velcro slots for "out of harm's way" securement, alongside a heavy-duty rubber sealing cap and shroud to entirely lock out water, mud, and corrosion.

• Rated for –40 °C/°F — Built to survive the harshest outdoor conditions, the ultra-grade insulation stays completely pliable and operational even in deep sub-zero freezing environments.

What’s in the Box

• 20 × OptiMate O-11 Battery Leads (5/16"-3/8" Adaptable Ringlets to SAE, 50 cm)

• 20 × Integrated 15A inline fuses

• 20 × Weather-proof rubber sealing caps and shrouds for the SAE connectors

• 20 × Additional black protective caps

Warranty

• 3-year limited replacement warranty