Hog Bikes

Best Motorcycle Battery Tender

The best motorcycle battery tender for most riders is the Battery Tender Junior 12V (750mA). It works on any 12V lead-acid, AGM or gel motorcycle battery, Harleys included. It charges the battery fully, then switches to float mode so it can stay plugged in all winter, and it comes with a ring terminal lead you can leave on the bike.

Riding a big touring bike and want a faster top-up? Go with the Battery Tender Plus (1.25 amps). Running a lithium battery? The NOCO GENIUS1 works with lithium (LiFePO4) as well as regular lead-acid and AGM batteries.

Updated

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Quick picks

Our picks

Best overall

Battery Tender Junior 12V (750mA)

Good for: keeping your bike's battery healthy through winter storage. Plug it in and forget it.

  • 750mA charger with a 4-step program that ends in float mode
  • Works with 12V lead-acid, flooded, AGM and gel batteries
  • Comes with a 12-foot cord, a ring terminal harness and alligator clips
  • 5-year warranty, per the listing
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Best for touring bikes

Battery Tender Plus 12V (1.25A)

Good for: bigger touring batteries and riders who want a quicker top-up.

  • 1.25 amp output with a 4-step charging program
  • Ring terminal and alligator clip cables included
  • Quick-disconnect harness for easy hookup
  • 10-year warranty, per the listing
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Best smart charger

NOCO GENIUS1

Good for: lithium batteries, or riders who also want to keep a car or mower battery healthy.

  • 1 amp charger for 6V and 12V batteries
  • Handles lead-acid (AGM, gel) and lithium (LiFePO4)
  • Built-in temperature sensor adjusts charging for hot or cold garages
  • Charger, maintainer and desulfator in one
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Best budget pick

MOTOPOWER MP00205A 12V (800mA)

Good for: a simple, no-fuss maintainer that still switches to maintenance mode on its own.

  • 800mA automatic charger, maintainer and desulfator
  • For 12V lead-acid, AGM and gel batteries
  • Spark-proof hookup, and no battery drain in standby
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Best for two bikes

Battery Tender Plus 2-Bank

Good for: two bikes (or a bike and a car) parked for the season.

  • Two independent 1.25 amp charging stations
  • Temperature compensation for the garage you're in
  • Listed for standard, AGM and lithium (LiFePO4) batteries
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Handy add-on

Battery Tender Ring Terminal Harness

Good for: leaving a plug on your bike so hooking up the tender takes seconds.

  • 18-inch quick-disconnect lead
  • Ring terminals stay connected to the battery
  • Built-in 7.5 amp fuse
  • Works with 12V Battery Tender chargers
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What is the best motorcycle battery tender?

The Battery Tender Junior 12V (750mA) is the best pick for most riders. It's made for powersports batteries, switches to float mode for long storage, and includes a ring terminal lead. Pick the Battery Tender Plus if you want more charging power, or the NOCO GENIUS1 if your bike has a lithium battery.

What is the best battery tender for a Harley-Davidson?

The same picks work great on a Harley. Every charger on this page is for 12V batteries, which is what modern Harleys use. Go with the Battery Tender Junior for most Harleys, the Battery Tender Plus for big touring bikes and baggers, or the NOCO GENIUS1 if you've switched to a lithium battery. Riding a vintage Harley? Check your owner's manual for battery voltage first; the NOCO GENIUS1 also handles 6V batteries.

How many amps does a motorcycle battery tender need?

For keeping a parked bike's battery topped up, a low-amp maintainer is all you need. Every pick on this page sits between 750mA and 1.25 amps. Bigger chargers are for bringing a dead battery back faster, not for long-term storage.

Can I leave a battery tender on my motorcycle all winter?

Yes. That's what a battery tender is for. All the chargers here are listed as maintainers that stop charging when the battery is full and switch to a float or maintenance mode, so they can stay connected all season.

How do I hook a battery tender to my motorcycle?

The easiest way is to install a ring terminal lead once, then leave it on the battery with the plug tucked somewhere you can reach. After that you just plug the tender in. Your owner's manual shows where the battery is and how to get to it.

What do the lights on a battery tender mean?

Each brand uses its own light codes, so check the quick-start card or manual that came with your charger. It will tell you which light means charging and which means the battery is full and being maintained.

How we picked

We looked at what riders actually buy on Amazon, kept the products lots of riders already use and like, and favored known motorcycle brands. We read each maker's listing and pulled the key details you see on the cards. We haven't lab-tested these products, so we don't give scores. Details come from the product listings as of October 10, 2026, so check the listing for current sizes and fit before you buy.