Battery Tender 12V 35W Mountable Solar Battery Charger is a compact solar maintainer built to keep a 12V battery topped off when shore power isn’t available. It’s designed for long-term storage and light parasitic loads (ECUs, trackers, alarms).

Best for

• Best for storage charging without AC power: 35W panel output for maintaining a healthy battery
• Best for powersports & seasonal vehicles: motorcycles, ATVs/UTVs, lawn equipment, stored cars
• Best for outdoor installs: IP67 rating and simple mounting options

Key technical details

• SKU: 021-1174
• UPC: 734357117400
• System voltage: 12V
• Solar output: 35W
• Ingress rating: IP67
• Total reach: ~15 ft total reach
• Included hardware: solar controller, ring terminal + alligator clip leads

Quick technical Q&A

Will a solar maintainer charge a dead battery?

It’s primarily for maintaining or slowly recovering a lightly discharged battery. If the battery is deeply depleted, use an AC charger first, then maintain with solar.

Does it prevent overcharging?

Yes—these kits use regulation/charge control so the battery is maintained instead of being continuously pushed upward by the panel.

Can I leave it connected all the time?

That’s the point. Mount it securely, route the cable safely, and periodically verify battery condition and connections.