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NOCO G3500

Genius Series 3.5A 6-volt/12-volt battery charger and maintainer

Item # 598G3500

As a member of the Genius Series of portable battery chargers, NOCO's G3500 charges 6- and 12-volt...

As a member of the Genius Series of portable battery chargers, NOCO's G3500 charges 6- and 12-volt...

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Item # 598G3500

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About the NOCO G3500

Versatile power 

As a member of the Genius Series of portable battery chargers, NOCO's G3500 charges 6- and 12-volt batteries with capacities up to 120 amp-hours, including cars, boats, diesel trucks, motorcycles, ATVs, snowmobiles, and other applications. The G3500 will maintain any size battery, and its four charging modes give you separate options for charging 6-volt, small and large 12-volt, and lithium-ion batteries. batteries. Repair mode allows you to recover old, damaged, stratified or sulfated batteries. 

Versatile power 

As a member of the Genius Series of portable battery chargers, NOCO's G3500 charges 6- and 12-volt batteries with capacities up to 120 amp-hours, including cars, boats, diesel trucks, motorcycles, ATVs, snowmobiles, and other applications. The G3500 will maintain any size battery, and its four charging modes give you separate options for charging 6-volt, small and large 12-volt, and lithium-ion batteries. batteries. Repair mode allows you to recover old, damaged, stratified or sulfated batteries. 

Multiple connection modes

The G3500's smart charging system monitors charge level, automatically shutting down to prevent over-charging. The charger is also spark-proof and provides reverse-polarity protection when connecting the battery. Its battery clamps make connecting quick and easy. The clamps can be removed, leaving eyelet terminals which allow a permanent connection for hooking up your charger.

IP65 rating

With the GC011 X-Connect 12-volt male plug (sold separately), you can charge vehicles with CANbus electrical systems through the 12-volt accessory port without connecting to the battery. If you want to install your charger in the engine compartment or elsewhere in your vehicle, its IP65 rating means it's dust tight and waterproof, so it'll withstand the elements and keep on charging. 

With its multiple modes and connection options, the G3500 will keep your battery topped up and your vehicle ready for the road.

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Product highlights:

  • works with all 6- and 12-volt batteries
  • maintains charge at normal level indefinitely without over-charging
  • spark and reverse polarity protection
  • IP65 water and dust resistant
  • includes cables with removable battery clamps and eyelet terminals
  • warranty: 5 years
  • Our 60-day money-back guarantee
  • MFR # G3500

What's in the box:

  • Smart battery charger & maintainer (attached 4.5' DC output cable and 6' AC power cord)
  • 18" Battery clamp connector cable (clamps can be removed to expose eyelet terminals)
  • 10-amp ATO fuse (installed inline)
  • Four 1-1/4" Screws
  • User Guide
  • Warranty Information

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NOCO G3500

Crutchfield customer from Hibbing, MN on 4/21/2019

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A lot better product then I expected. Works as stated. Looking at buying a Noco booster for jump starts.

Pros: Easy directions .

Cons: As always with any newer product with mutiple wires are stiff and hardto manage.

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NOCO G3500

Daniel from Flushing, MI on 3/6/2019

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good product

Pros: good clamps

Cons: a lot of plastic

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NOCO G3500

Crutchfield customer from Christoval, TX on 4/25/2018

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excellent value, works as advertised, I recommend it highly

Pros:

Cons:

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NOCO G3500

Crutchfield customer from Roselle, IL on 4/11/2018

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The NoCo G3500 is more than I expected. I,m very very pleased with this charger.

Pros:

Cons:

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NOCO G3500

Jason from VA on 8/1/2017

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Works great on the AGM setting with my Optima Red Tops and a Yellow Top. Doesn't exceed the recommended 15V limit. Runs cool. Very impressed.

Pros: Small size, rugged construction, should charge my vehicles using the Noco cigarette lighter cable without popping the hood.

Cons: None yet.

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More details on the NOCO G3500

Russ B.

Product Research

Features
Specifications

Features

UltraSafe Battery Charger and Maintainer: The Noco Genius G3500 is a portable and automatic battery charger. It can be used for both 6V and 12V lead-acid and lithium-ion batteries. The G3500 is designed for charging cars, boats, RVs, SUVs, diesel trucks, motorcycles, ATVs, snowmobiles, personal watercraft, lawn mowers, and much more. It can be used as a battery maintainer to keep both starter and deep-cycle batteries fully charged. It also monitors battery activity for safe and efficient charging without any overcharge. The G3500 is complete with a built-in battery desulfator in order to rejuvenate underperforming batteries. It is suitable for charging battery capacities up to 120 Amp-Hours and maintaining all battery sizes.

Note: Selecting the proper battery charger depends on your needs. Do you need to recharge a dead battery entirely, or just keep a battery at full charge? Battery charging means you need to recharge a dead battery fully, whereas battery maintenance requires a mere trickle charge. Most battery chargers perform both functions, but understanding their limits and the amount of time to recharge depends on the size of the battery and vehicle. The G3500 is designed for charging smaller applications - like a motorcycle, ATV, snowmobile, or any lawn and garden equipment. But it's also a perfect battery maintainer for a car, boat, RV or even a truck.

Next Gen Charging Technology: This next generation smart battery charger utilizes the latest advancements in battery charging technology. The Noco G3500 is built on a high-frequency and high-efficiency platform, which converts energy 30,000x faster than traditional automotive battery chargers. It's this efficient use of electricity is what makes Noco chargers not only compact, lightweight, and incredibly portable, but one that minimizes energy consumption and compliant with California Energy Commission regulations.

Intelligent Maintenance Technology: Most manual, automatic or semi-automatic battery chargers continuously trickle charge batteries, making them susceptible to overcharge, which limits battery life. Noco's intelligent battery maintenance technology monitors battery activity and only begins charging when needed, and allows for continuous operation without user intervention and zero risks of overcharging your battery. The charger can be left connected to the battery indefinitely.

Charging Modes: With the Noco Genius G3500, you can simply push of a button to switch between various charging modes within one, complete multi-purpose battery charger. Its even equipped with a progressive repair method for recovering heavily sulfated and weak 12-volt batteries.

  • 12V Norm (14.5V/3.5A): For charging 12-volt Wet Cell, Gel Cell, Enhanced Flooded, Maintenance-Free and Calcium batteries (up to 120Ah). When selected, a white LED will illuminate.
  • 12V Norm Small (14.5/900mA):For charging 12-volt, Wet Cell, Gel Cell, Enhanced Flooded, Maintenance-Free and Calcium batteries (up to 35Ah). When selected, a white LED will illuminate.
  • 12V Cold/AGM (14.8V/3.5A): For charging 12-volt batteries in cold temperatures below 50ºF or AGM batteries (up to 120Ah). When selected, a blue LED will illuminate.
  • 12V Cold/AGM Small (14.8V/900mA): For charging 12-volt batteries (up to 35Ah) in cold temperatures below 50ºF or AGM batteries. When selected, a blue LED will illuminate.
  • 12V Lithium (14.2V/3.5A): For charging 12-volt lithium-ion batteries (up to 120Ah), including lithium iron phosphate. When selected, a blue LED will illuminate.
  • 6V Norm (7.25V/3.5A): For charging 6-volt, Wet Cell, Gel Cell, Enhanced Flooded, Maintenance-Free and Calcium batteries (up to 120Ah). When selected, a white LED will illuminate.
  • 12V Repair: An advanced battery recovery mode for repairing and storing, old, idle, damaged, stratified or sulfated batteries. When selected, a red LED will illuminate and flash.
  • Standby (No Power): In standby mode, the charger is not charging or providing any power to the battery. Energy Save is activated during this mode, drawing microscopic power from the electrical outlet. When selected, an orange LED will illuminate.

Simple User Interface: The Noco G3500 is designed with a simple, easy to understand user interface to make battery charging modes easily selectable, the charging status readily visible, and any charging errors efficiently communicated. From advanced diagnostics to initialization, this advanced battery charging solution keeps you informed at a moments glance. The smart battery goes through 8 charging steps -

  • Analyze & Diagnose (Steps 1/2): Checks the battery's initial condition, including voltage, state-of-charge and health, to determine if the battery is stable before charging.
  • Recovery & Initialize (Step 3/4): Initializes the Recovery desulfation process (if needed) for deeply discharged or sulfated batteries by pulsing small amounts of current. Initialization starts the charging process with a gentle (soft) charge.
  • Bulk & Absorption (Steps 5/6):Begins the Bulk charging process based on the condition of the battery and returns 80% of the battery's capacity. Absorption brings the charge level to 90% by delivering small amounts of current to provide a safe, efficient charge; this limits battery gassing and is essential to prolonging battery life.
  • Optimization (Step 7): Finalizes the charging process and brings the battery to maximum capacity. In this step, the charger utilizes multi-layered charging profiles to fully recapture capacity and optimize the specific gravity of the battery for increased run time and performance. The charger will switch to Maintenance if the battery tells the charger that more current is needed.
  • Maintenance (Step 8): Continuously monitors the battery to determine when a maintenance charge should be initiated. If the battery voltage falls below its target threshold, the charger will restart the Maintenance cycle until voltage reaches its optimal state and then discontinues the charge cycle. The cycle between Optimization and Maintenance is repeated indefinitely to keep the battery at full charge. The battery charger can be safely left connected indefinitely without the risk of overcharging.

CANbus Enabled: CANbus electrical systems found on BMW, Ducati, Triumph, and Harley-Davidson motorcycles disable the 12-volt charging port when the ignition is off. Recharging requires the ignition to be on, or connected directly to the battery. With CANbus enabled technology, it sends a unique voltage signal that automatically opens, and allows charging through the 12-volt accessory port. Noco's X-Connect 12V dual-size male plug (598GC011, sold separately) is required.

Safety Protection & Advanced Diagnostics: Noco battery chargers are not designed to merely work, but also remain safe after a major failure. Noco built in redundant levels of safety protection for their chargers to keep you and your vehicle safe. It offers protection against reverse polarity, sparks, overcharging, over current, open-circuits, short-circuits, and overheating. The Noco Genius smart battery charger also offers Advanced Diagnostics, which analyzes battery feedback and displays a particular error pattern if a problem is detected. Each LED flash pattern tells you what's wrong, and how to quickly fix it.

  • Single Flash: Battery will not hold a charge and should be checked by a professional.
  • Double Flash: Possible battery short, and should be verified by a professional.
  • Triple Flash: Battery voltage is too high for the selected charge mode. Double check the battery matches the charge mode.
  • Error LED Solid Red: Reverse polarity. Reverse the connections to the battery.
  • Standby LED Solid Orange: Battery voltage is too low for the battery charger to detect the battery.

Charge LEDs: The charger has four Charge LEDs (25, 50, 75, &100%). This Charge LED indicates the connected battery's state-of-charge (SOC).

  • The 25% Charge LED will slowly pulse when the battery is less than 25% fully charged. When the battery is 25% charged, the red Charge LED will be solid.
  • The 50% Charge LED will slowly pulse when the battery is less than 50% fully charged. When the battery is 50% charged, the red Charge LED will be solid.
  • The 75% Charge LED will slowly pulse when the battery is less than 75% fully charged. When the battery is 75% charged, the orange Charge LED will be solid.
  • The 100% Charge LED will slowly pulse when the battery is less than 100% fully charged. When the battery is fully charged, the green LED will be solid, and the 25%, 50% and 75% Charge LEDs will turn off.
  • During maintenance charging, the 100% Charge LED will pulse slowly. When the battery is topped off and fully charged again, the 100% Charge LED will turn solid green.

Efficient & Compact Design: A mix of electrical engineering and industrial design create a powerful battery charger into a tiny footprint. It's only slightly bigger than the power outlet itself. It uses high-frequency switch-mode technology to efficiency convert A/C power into safe D/C power for battery charging. And it's onboard microcomputer precisely controls the charging to minimize power loss to create an incredibly compact form factor.

Mounting & Installation: The Noco Genius G3500 has four external holes for mounting (screws included). It is important to keep in mind the distance to the battery. The G3500 is outfitted with an attached 6' AC power cord and a 4.5' DC output cable. The AC power cord is terminated by a two-prong AC plug, while the 4.5' DC cable is terminated by a Noco proprietary X-Connect terminal. The DC cable plugs into the included 18" battery clamp connector cable. The clamps can be removed, leaving eyelet terminals (1/4" internal diameter, 1/2" outer width). Noco also offers a 10' Extension cable (sold separately). Do not connect the G3500's AC power plug until the battery connections are made.

Note: Check out the Accessories Tab for a full list Noco X-Connect installation accessories.

Rugged Construction w/ 5 Year Warranty: The Noco Genius smart charger is designed for a rugged working environment. It's water, shock, dirt and dust-proof; rated at IP65. Noco battery chargers are built to last. That's why they are backed with a 5 Year Warranty.

Specifications

Charging Times: The estimated time to charge a battery is shown in the table below. The size of the battery (Ah) and its depth of discharge (DOD) greatly affect its charging time. The charge time is based on an average depth of discharge to a fully charged battery and is for reference purposes only. Actual data may differ due to battery conditions. The time to charge a normally discharged battery is based on a 50% DOD.

Battery Size (Ah) Approximate Time to Charge (Hours)
6V 12V
20 2.9 2.9
40 5.7 5.7
80 11.4 11.4
100 14.3 14.3
120 17.1 17.1

Battery Voltages: Charges 6-Volt and 12-Volt batteries

Types of Batteries: Suitable for Wet Cell (Flooded), Gel Cell, Calcium, Lithium-Ion, AGM, Enhanced Flooded Battery or any Maintenance-Free Battery

Battery Capacity Range: Ideal for Batteries up to 120 Amp-Hours; Suitable for Maintaining All Battery Sizes

Efficiency: Approximately 85%

Charging Current: 3.5 Amps (12V & 6V) / .9A (12V Small)

Power Consumption: 60 Watts (Max)

Voltage AC: 110-120 VAC, 50-60Hz (Input), 85-130 VAC, 50-60Hz (Working)

Low-Voltage Detection: 2V

Back Current Drain: <5mA

Cooling: Natural Convection

Operating Temperature: 32°F to +104°F

Dimensions: 9.75" (w) x 1.9375" (h) x 2.6875" (d)

Weight: 1.13 lbs

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Great user reviews. [ David  Jan 01, 2019 ]
A
To maintain agm battery and recondition batteries if possible. [ Irvin  Jun 12, 2017 ]

2 questions already asked

Q
NOCO 3500 Genius is not working??? Purchased the NOCO 3500 Genius and have been using it for about 9 months. Today, I plugged it in. The Orange - Power light Comes on and after about 5 seconds, the power light flickers off, the white light on the mode line above the status flickers on and off and then the power light turns on. This continues for 10 minutes and then I turned the G3500 off. I have tried this 4 or 5 times with the same relults. Am not sure what's going on, but the car won't start. Any thoughts or suggestions. Thx, David
[ David  Apr 16, 2019 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Apr 29, 2019 ]  Staff
Q
How can you charge your battery from the cigerete lighter?
[ Robert  Apr 11, 2018 ]
1 answer
A
I did not know if this was possible but there is some info on Google. There is no mention of it in the manual that came with the charger and there was no attachment that came with the charger to fit the lighter socket. Hope this helps
[ Michael  Apr 12, 2018 ]

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