Best Battery Tender for Harley Davidson Motorcycle | NOCO G3500 vs CTEK MUS 4.3

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ctek vs nocoIf you need a Battery Tender for a Harley Davidson Motorcycle, Victory Motorcycle or any other street racer, then you have come to the right place. We reviewed the two top manufacturers in smart trickle chargers. CTEK vs NOCO

Every car or motorcycle battery in the world needs a quality battery tender, be it lead acid, AGM or gel. Why is that?

Keeping your battery in tip-top condition is vital for you to exceed the use by date, on your motorcycle or car battery. This puts more money in your pocket, to buy mods and upgrades for your pride and joy.

As we needed a new battery tender for our Harley Davidson 2007 FXSTC custom Softail, due to the battery failing. We decided to review the top 2 new battery tender chargers on the market for 2017.

The best battery tender for Harley Davidson ended up being the NOCO Genius G3500 smart battery tender. Read on for how we came to that conclusion.

Top 2 Mid-range Battery Tenders are Noco Genius G3500,  and Ctek Mus 4.3

Lets check out their features and specifications.

Best motorcycle battery charger

ctek mus 4.3 vs noco review noco best harley davidson battery tender
Features CTEK MUS4.3 NOCO Genius G3500
Model No. MUS 4.3 G3500
Dimensions 6.6 x 1.5 x 2.6 inches 7.7 x 2.7 x 1.9 inches
Max Amps 4.3 3.5 Amps
Voltage  12v 6v, and 12v
Recondition Mode Yes Yes
Multi Step Charger yes 8 yes 7
Included Cables Alligator clamps, permanent  eyelets  Alligator clamps, permanent  eyelets
Stay Connected 24/7 Yes Yes
Warranty 5 Years 5 Years
Temp Range -4 to +122F (-20 to +50C)  32°F to +104°F, (0°C to +40°C)
IP Rating IP65 IP65
Price $$$ $$

 Where to buy

There has been a lot of advancement in the way lead acid battery’s are charged. In the good old days battery fast chargers would just pump in some amps, and your battery would boil away. The side effect to this is you slowly run out of battery acid and dry up the cell. Destroying the battery in the process. Now your up for a new battery and having to jump start your bike until you do.

Check out our No1 pick Lithium Ion Jump Starters for Motorcycles

 

Quality Motorcycle Battery tenders came to the rescue with a multi step process which works something like this.

ctek charger tender 8 step harley davidson

CTEK 8 Step Battery tender process

  • STEP 1 DESULPHATION : Detects sulphated batteries. Will try to repair the battery by pulsing current and voltage, this removes sulphate from the lead plates of the battery in-turn restoring the battery capacity.
  • STEP 2 SOFT START : Slowly ramps up current and voltage, this tests if the battery can accept charge. This step prevents charging with a defect battery.
  • STEP 3 BULK:  Charges with maximum current of the tender, until approximately 80% battery capacity. 
  • STEP 4 ABSORPTION : Charges with declining current to maximise 100% of the  battery capacity.
  • STEP 5 ANALYSE: Tests if your battery can hold charge. Batteries that can not hold charge over a short time will need to be replaced.
  • STEP 6 RECONDITION: This is user selected and during the reconditioning step, the voltage increases to create controlled gassing in the battery. Gasing mixes the battery acid and gives back energy to the battery. Doing this a few times a year can help the longevity of your battery.
  • STEP 7 FLOAT: Maintaining the battery voltage at maximum level 100%, by providing a constant tender voltage charge. 
  • STEP 8 PULSE: Maintaining the battery at 95–100% capacity. The tender trickle charger monitors the battery voltage and gives a short pulse whenever necessary to keep the battery fully charged.

Ctek Vs NOCO Battery Tenders

The top two multi step battery smart fast chargers currently on the market are the Ctek and the NOCO. These two manufactures, are the main players in the Battery Tender market. 

Each Ctek vs Noco brand have multiple trickle chargers, to suit different ranges of batteries. From Jet-skis, like Sea-doo and Yamaha, ATVs, Harley Davidson Motorcycles and 4x4s. The two mid-range models that can do just about everything at a great price are the Ctek MUS4.3 and the Noco G3500.

The only real difference is the Noco G3500 can do 6v and 12v charging, whereas the Ctek Mus4.3 can only do the 12v charging. Not a game changer if you don’t have any 6v batteries.

Smaller 6 volt SLA batteries will be in things like auto/self-start lawnmowers and smaller motorcycles.

The Ctek MUS 4.3 has a slightly higher amp charging rate so is better for larger capacity car batteries. But the Noco is cheaper. WIN

In the end, I ended up with the Noco g3500 charger as I wanted the ability to charge 6 volt batteries, and the slightly slower charge rate is not a big deal. Hey, you just will be charging a few hours more, so what…

Price, on the other hand, is the big plus for me, I needed quality but also affordability. I didn’t want to buy junk. It’s great value. Like the old saying, “Buy Cheap, Buy Twice” 

If you want to know how to use your new battery tender charger read on…

How to use a Battery Tender for Motorcycles

1. Connect the red clamp to the battery’s positive terminal it should have a red cable. (no need to disconnect the battery leads)

2. Connect the battery tender black clamp to a bare frame or engine bolt, away from the fuel hose.

3. Push the battery tender plug into the wall socket and turn on. Charge up your battery until 100% then,

4. Turn off power to the Battery Tender and disconnect the trickle charger from the wall socket. You can now disconnect the battery.

5. Disconnect the Harley Davidson battery tender black clamp before the red clamp.

Canbus Charging on Harley Davidson

The NOCO G3500 directly supports CANbus charging on Harley Davidson’s.

So what is Canbus? Well, it is the electrical systems found on some Harley-Davidson motorcycles and many other vehicles and motorbikes. It is a protocol that sends and receives information like speed, temperature, steering angles, tilt sensors, pressure, user input and many other sensors to improve the engine fuel economy and overall user experience. Making for a safer and more technology driven experience. 

CANbus stands for :Controller Area Network (CAN bus

More technical information about CANbus can be found here

If you use a standard battery tender for your Harley Davidson Motorcycle, you will soon realize that the 12-volt charging port is disabled when the ignition is off. Recharging requires the ignition to be on, or direct connection to the battery. Keeping the Ignition on is crazy unless your motorcycle is in a locked up fortification. With CANbus enabled technology, the Noco g3500 charger sends a special voltage signal, that automatically opens a relay and allows charging through the 12-volt accessory port. Nice.

 

NOCO Genius G3500 6V and 12V 3.5A  Harley Davidson battery tender


Battery Tender for Harley Davidson Motorcycle

NOCO have  been around for a while as an innovation company. They have many battery related products like lithium-ion jump starters and top-rated smart battery tenders.

The NOCO G3500 battery charger is a dual voltage charger that has the ability to charge 6v and 12v motorcycle batteries, lawn mowers, Jet Skis, ATVs, boats, sports cars and four-wheel drives.

 A very new feature is the ability to charge 12v Lithium Ion batteries which are starting to come out to market.

  • Cutting-edge technology delivers superior performance. Charge 2x faster, repair damaged batteries and use with micro-hybrid start-stop vehicles and CANBUS electrical systems.
  • Streamlined design that’s ultra-compact, portable and incredibly lightweight. It features external mounting holes and a rubberized base that avoids surface slipping and scratches, all while remaining impact, UV and water-resistant (IP65).
  • Able to be safely connected 24/7. It monitors battery activity for safe and efficient charging, automatically minimises energy consumption, and includes spark-proof technology, as well as reverse polarity and overcharge protection. This will be indicated with a problem status LED that will light up, alerting you to an issue.
  • Intuitive LED indicators provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode.

NOCO G3500 Charging Modes Explained.

noco g3500 charging modes explained
image no.co
  • 1.) 12V Norm Mode Noco

    This is the normal charging mode for all 12-volt Wet Cell, Gel Cell, acid flooded, and Maintenance-Free with the G3500 Smart Charger. When selected, by pressing the mode button a white LED will illuminate. Volts 14.5V max 3.5A – Up To 120Ah Batteries. Standard mode for cars and 4x4s

  • 2.) Winter 12V Cold/AGM Mode Noco

    For winter charging 12-volt batteries below 50ºF (10ºC) or AGM batteries. When selected, by pressing the mode button a blue LED will illuminate. Pushes out 14.8V @ 3.5A – Up To 120Ah Batteries

  • 3.) Small capacity 12V Norm Mode

    For charging small capacity 12-volt Wet Cell, Gel Cell, and Maintenance-Free. When selected, by pressing the mode button a white LED will illuminate. Pumps out 14.5V @ 900mA. Up To 35Ah Batteries. This will be the standard mode setting for your Battery Tender for Harley Davidson Motorcycle. As each motorcycle battery will be about 20 to 30 Ah

  • 4.) Winter Small capacity 12V Cold/AGM Mode

    For cold winter smart charging 12-volt batteries in temperatures below 50ºF (10ºC) or AGM batteries. When selected, by pressing the mode button a blue LED will illuminate. Volts 14.8V max 900mA – Up To 35Ah Batteries 

  • 5.) 6V charging Norm Mode

    For charging 6 volt Wet Cell, Gel Cell, Enhanced Flooded, Maintenance-Free and Calcium batteries. When selected, a white LED will illuminate. Pushes out 7.25V @ 3.5A  Up To 120Ah Batteries

  • 6.) Special 12V Lithium Mode

    For charging 12-volt lithium-ion batteries, including lithium iron phosphate. When selected, by pressing the mode button, a blue LED light will illuminate. Max 14.2V at 3.5A  Up To 120Ah Batteries.

  • 7.) 12V Battery Tender Repair Mode

    A smart advanced battery recovery mode 7 step, for repairing and storing, old, idle, damaged, or sulfated batteries. When selected, by pressing the mode button a red LED will illuminate and flash. Higher Voltage 16.5V @ 1.5A  Any Capacity no limit.

  • 8.) Standby Mode

    In Standby mode, the battery tender is not charging or providing any power to the battery until required. Energy Save is activated during this mode, only a small amount of power is required from the electrical outlet, to power the Noco g3500 unit. When selected, by pressing the mode button, an orange LED will illuminate.

NOCO G3500 Best Battery Tender for Harley Davidson Motorcycle special features reviewed

The Noco g3500 mid range battery tender is a very well-built charger. It feels very well made and has a nice solid heavy weight to it.
 
It is able to full charge drained lead-acid and lithium-ion batteries up to 120Ah, (can go higher just turn off then on again) including ATVs, lawn mowers, motorcycles like Harley Davidson, Ducati and most importantly cars. Safely maintain all types of automotive, marine, RV, power-sport, lawn & garden and deep-cycle batteries.

Features

  • The new Noco G3500 has new technology which delivers superior performance. Charge, repair damaged batteries and being able to be used with micro-hybrid start-stop vehicles and CANBUS electrical systems.
  • As its ultra-compact, portable and incredibly lightweight. 
  •  It can easily be able to be stored in your glove box when needed. Furthermore it features external mounting holes so you can mount it in your shed, on a trolley or even in your car or boat. Rubberised base makes sure it wont slip around.
  • Impact, UV and water-resistant (IP65).
  • You can leave it connected and powered on safely 24/7. It will monitors battery usage for safe and efficient charging, spark-proof technology, as well as reverse polarity and overcharge protection. This is one super safe battery tender charger
  • LED multi coloured lights provide visual battery tender feedback and diagnostic information, even when in maintenance mode.
  • NOCO Genius Smart Battery Chargers are some of the safest and most advanced on the market. Designed for use on 120-volt 50-60Hz electrical systems, the G3500 includes both X-Connect battery clamps and permanently mounted eyelet terminals. If you hard wire the Harley Davidson battery tender pigtail it will make charging simple. An added bonus was the 10 amp inline fuse connected to the Eyelet cable, as well as a 10 amp fuse in the battery clamp connector.
  • A 5-year limited warranty was nice to see.
  • The best Harley Davidson battery tender at the cheapest price.
  • Download the user manual for the Noco G3500 

 

CTEK (56-864) MUS 4.3 12 Volt Auto 8 Step Battery Charger Review

ctek mus 4.3 vs noco review Battery Tender for victory MotorcycleThe excellent Ctek mus 4.3 is the latest mid range battery tender that provides a great deal for the money. 

There are many examples of people getting massively extended run times before failure of their car batteries, because of using smart battery tenders. IF you can keep your SLA or Gel battery fully charged at all times you can get 6 years + out of your battery. Without a battery tender, you will be lucky to get 3 years.

Ctek Mus 4.3 Special features 

  • Auto charging and maintenance in 8 steps to maximise your battery life.
  • IP65 Splash and dust resistant means it is safe to use in all climate situations
  • Full safety features like no spark, short-circuit proof and reverse polarity protected makes it one of the safer battery tenders on the market.
  • Patented maintenance charge to maximise battery life and performance
  • Many accessories like longer charge leads, permanent eyelet charge leads and quick disconnect clamps. This simplifies using the same charger for multiple battery applications. I like that there are inline fuses to the clams and the eyelet cables. Just like the NOCO g3500. Great to see, safety is important.

Who needs a Battery Tender?

The CTEK MUS 4.3 battery charger is perfect for those who want a no fuss charger that can be set and forget.

Especially for those with a Harley Davidson motorcycle or Jet-Ski which usually sits idle in the off-season. Your vehicles are having a constant drain on the battery through security systems, therefore you really need to keep topping up the battery every month or so.

The Ctek mus 4.3 can solve a broad range of battery-related problems like, low cranking amps and batteries that don’t hold a charge. The Mus 4.3 can bring those batteries back to life.

It features 8 step charging to maximise battery life and performance.

So how does this 8 step battery tender charge work? Well similar to the Noco charger, the key features are a de-sulphation process which removes sulfate from the lead plates.

The smart battery diagnosis will show if a battery can take and retain a charge, a special reconditioning procedure that restores sulfide and deeply discharged batteries.

Special maintenance charging, a mode for optimised charging during really cold days, and charging of my favorite the AGM battery. The color changing LED display allows the user to see the overall charging process steps. It’s a wise choice battery tender for Harley Davidson Motorcycle, providing you have easy access to your battery.

Ctec Mus 4.3 safe for your Harley Davidson

The top-rated Ctek MUS 4.3 is a non-sparking, short-circuit proof, reverse polarity protected unit designed for year round usage and has built-in overcharging protection. The Ctek is splash, dust and water-resistant therefore you can keep your battery charged even if it rains or snows. (ip65 rated)

Included with the MUS 4.3 is the charging unit, 2  battery clamps, a Comfort Connect M6 (6mm) eyelets, and a mesh storage bag. With a huge range of optional accessories, the charger can to used to charge all your battery needs, with a simple quick plug-in connector. I really like this feature as I can keep the eyelets or crimp ring pigtail connected to the hard to reach batteries of my Harley Davidson and Sea-doo. 

The MUS 4.3 battery charger has a 5-year Limited warranty likewise so does the NOCO unit.

Conclusion 

At the end of the day you cant go wrong with either of these 2 battery tenders for your Harley Davidson motorcycle. The Noco G3500 is clearly the winner, with added features like 6v charging and CANbus support. If you decide you don’t need these options, it still may be good to future proof your charger.

The top rated Noco Genius G3500 is currently the best value smart trickle charger on the market. Don’t waste your money-getting a non-smart battery tender, which may destroy your expensive  HDX30L Harley Davidson or Victory motorcycle battery over time. It’s not worth the risk.

If you don’t ride for a month, your battery is at risk of a slow death. Then your battery gets too low in volts, you are up for either a new battery if it won’t take a charge, or a Lithium Ion Jump starter. Get it connected to a tender now. Your wallet will thank you. 

 

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3 Comments on "Best Battery Tender for Harley Davidson Motorcycle | NOCO G3500 vs CTEK MUS 4.3"

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Dan Hammack
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3.5 and 4.3 amps is IMO too much for most motorcycles. I have a Noco Genius G3500 hooked up to my Harley but it has a 26 amp battery, and I wouldn’t even consider using the 4.3 amp CTEK for any motorcycle..

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