Battery Tender OBDII Adapter Cable 22-Inch — Solar Compatible, 3A Output with SAE Quick-Disconnect for 12V Battery Maintenance

Battery Tender's OBDII Adapter Cable (081-0154-DL) is a 22-inch, solar‑compatible adapter that lets you charge or maintain a vehicle's 12V battery through the OBD II port with a steady 3 amp output.

This compact adapter provides a clean, plug-and-play way to access a car or light truck 12V battery without opening the hood. Designed for routine maintenance charging and solar trickle charging, the cable includes an SAE quick-disconnect for easy connection to Battery Tender chargers or compatible solar panels. The 22‑inch length balances reach and tidy installation, while the OBD II plug makes hookup straightforward on most modern vehicles with accessible diagnostic ports.

How does the OBDII adapter connect to my vehicle?

Plug the molded OBD II connector into the vehicle's standard diagnostic port, usually located under the dash near the steering column. Once seated, use the SAE quick-disconnect to attach any compatible Battery Tender charger or a solar charge controller to begin charging or maintaining the battery.

• Molded OBD II plug designed to fit standard vehicle ports
• 22-inch cable length for convenient reach from port to charger
• SAE quick-disconnect allows rapid attach/detach of chargers
• Works without needing to access battery terminals directly

What charging performance should I expect?

The adapter is rated to deliver a steady 3 amps to the vehicle’s 12V electrical system when used with a compatible charger or solar source. That output is ideal for maintaining battery charge and slow recharging; it’s not intended as a rapid start-up booster for severely depleted batteries.

• 3 AMP output suitable for maintenance and trickle charging
• Stable current for preserving battery health over long storage
• Pairs with Battery Tender chargers and solar panels for flexible use
• Not a substitute for high‑current jump-start devices

Is this adapter safe for modern vehicle electronics and solar setups?

Battery Tender designs the adapter for compatibility with modern vehicles and low-voltage solar charging systems to avoid interference with onboard electronics. Using a compatible Battery Tender charger or solar regulator helps ensure proper voltage regulation and safe connection through the OBD II port.

• Designed for low-current maintenance charging via diagnostic port
• Use with regulated chargers or solar controllers to protect electronics
• Simple SAE quick-disconnect reduces wear from repeated connections
• Keep charging sources within recommended specifications for best results

Who is this for? The Battery Tender OBDII Adapter Cable (081-0154-DL) is aimed at vehicle owners, fleet managers, restorers, and anyone who stores cars, motorcycles, or light trucks and wants a tidy, reliable way to keep 12V batteries topped up without repeatedly accessing the battery terminals. It's especially useful for cars kept in garages, dealers offering battery maintenance services, and owners who prefer solar-compatible maintenance options. If you need fast jump-start power or high‑amperage recovery, pair this adapter with appropriate equipment; for routine maintenance and solar trickle charging, it delivers a practical, low-effort solution.