Battery Tender Quick Disconnect USB Charger Adapter — SAE 12V to 2.1A USB-A (Black) with Dust Cap

Battery Tender's Quick Disconnect USB Charger Adapter converts any 12V battery with an SAE connection into a reliable 2.1A USB charging point for phones, tablets, and GPS while you’re away from shore power.

This compact adapter lets you tap into a vehicle, motorcycle, ATV, golf cart, or portable 12V battery quickly and safely. It uses an SAE-style quick-disconnect input so you can couple it to Battery Tender ring-terminal accessory cables or other SAE-equipped leads, providing a clean, on-board charging option without permanent wiring. Built for outdoor use, the charger includes a protective USB cap and a 2.1 amp output suitable for most mobile devices that need a faster charge than standard 1 amp ports.

How do I connect this adapter to a 12V battery?

Attach the adapter to any SAE quick-disconnect harness or accessory cable that’s connected to your battery. The adapter’s SAE plug mates instantly—no tools required—and the USB port is ready to power devices as soon as the battery provides voltage.

• Plug into Battery Tender SAE cable or compatible SAE leads
• No hardwiring; quick-connect/disconnect convenience
• Works with ring-terminal accessory cable for direct battery access

Which devices will charge and how fast?

The adapter supplies up to 2.1 amps through a single USB-A port, suitable for most smartphones, small tablets, GPS units, action cameras, and other USB-powered gadgets. While not a replacement for high-wattage fast chargers, 2.1A gives noticeably quicker charging than legacy 1A ports.

• 2.1 AMP USB output for faster-than-basic charging
• Compatible with phones, GPS, cameras, and tablets within standard USB charge profiles
• Not intended for high-wattage laptop charging

Is the adapter durable enough for outdoor or dirty environments?

Yes — it was designed with field use in mind. The USB port includes a dust-proof cover to keep debris and moisture out, and the simple, rugged construction stands up to typical outdoor vibration and exposure when attached to motorcycles, ATVs, and boats.

• Protective USB cap blocks dust and particles
• Compact, rugged housing tolerates vibration and movement
• Easy to stow when not in use—no permanent installation required

What’s included and what support is available?

The package contains the USB charger adapter with a 12V SAE quick-disconnect input and a single 2.1A USB-A output. Battery Tender backs the product with lifetime customer support to help with compatibility questions and installation guidance.

• One Battery Tender USB charger adapter with SAE input
• 2.1 AMP USB-A charging output
• Lifetime customer support from Battery Tender

Who this is for: This adapter is ideal for outdoorspeople, motorcyclists, off-road riders, and anyone who needs an easy, non-permanent way to charge phones, GPS units, cameras, and similar devices from a 12V battery. If you want a quick-connect solution that’s portable, simple to use, and suited for dusty or mobile environments, this Battery Tender adapter gives a practical, reliable charging point without rewiring your vehicle.