NOCO Car Battery Charger and Maintainer

Last updated date: November 23, 2019

DWYM Score
9.1


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We looked at the top Car Battery Chargers and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Car Battery Charger you should buy.

Overall Take

In our analysis of 155 expert reviews, the NOCO NOCO Car Battery Charger and Maintainer placed 7th when we looked at the top 10 products in the category. For the full ranking, see below.

Editor's Note May 28, 2020:
Checkout The Best Car Battery Charger for a detailed review of all the top car battery chargers.

Expert Summarized Score
9.3
15 expert reviews
User Summarized Score
8.6
1,920 user reviews
Our Favorite Video Reviews
What experts liked
Intuitive diagnostic tool helps understand battery damage
- Jump Starter Expert
October 22, 2019 | Full review
The Maintenance Plus mode automatically keeps your battery at full charge without overheating. It uses state-of-the-art technology to keep all the internal chemistry stabilized, which boosts battery performance and keeps your battery working for longer
- Byways
This capable model can charge and maintain 6-volt and 12-volt batteries and works in the safest manner possible, featuring spark proof technology as well as reverse polarity to protect your battery against an unprecedented overcharge.
- 10 Bees
The NOCO Genius G3500 charger features 7 different charger modes to help you more effectively start and charge any lithium battery depending on the voltage and drainage. It can completely recharge a fully-drained battery and safely maintain a battery’s charge.
- Battery Focus
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.
- Geartec Online
It delivers good power to charge both 6 and 12-volt batteries. The unit is effective on lead-acid, lithium-ion, Gel and other types of batteries.
- Best Selected Products
Streamlined design makes it easy to carry and lightweight
- The 10 Pro
The charger must be easy to use. It should be fully automatic and with minimal adjustment. Of course, the charge must be portable and lightweight. The cables must have the best length of convenience.
- Top Ten Product Review
This charger also features active monitoring systems that let you know how your battery’s overall health is looking and work to repair damage from discharge and sulfate to lengthen and optimize battery life.
- 10beasts
September 28, 2019 | Full review
The battery features a rubberized base that avoids surface scratches and slipping all while remaining impact and external mounting holes, UV, and water-resistant (IP65).
- Disneysmmoms
September 9, 2019 | Full review
This battery can provide 30 amp per hour with null overcharge rate. This would increase the versatility and performance of the charger. The charger is applicable to automotive, powersport garden batteries, RV’s and other deep-cycle batteries. Also applications like recovery and backup for damaged batteries.
- Top 10 Focus
Streamlined design makes the G3500 very compact, ultra-portable, and amazingly lightweight
- Car Battery Chargers Central
March 31, 2015 | Full review
Battery protects against overheating, short-circuits, sparks, overcharging, reverse polarity and over current
- Halo Technics
NOCO Genius G3500 6V/12V 3.5A UltraSafe Smart Battery Charger is water resistant and no slip, so even if the worst weather conditions you don’t have to worry about being able to get a charge.
- Garage Chief
Its automatic modulation of the charging process based on the calculations of its onboard microcomputer helps it charge batteries with problems until they’re like new again.
- Wheels Tips
February 26, 2019 | Full review
What experts didn't like
More suitable with non-AGM batteries like lead-acid and lithium-ion batteries
- Jump Starter Expert
October 22, 2019 | Full review
Doesn’t recharge completely dead batteries
- Battery Focus
Its price is a bit higher
- Top Ten Product Review
3500 model can’t jump start a dead battery
- 10beasts
September 28, 2019 | Full review
Can be slow on larger batteries
- Car Battery Chargers Central
March 31, 2015 | Full review
No jump charge vehicle charging, but can be found in the more pricier NOCO charger.
- Halo Technics
Requires some extra steps to charge and repair completely dead batteries
- Wheels Tips
February 26, 2019 | Full review

From The Manufacturer

NOCO Genius smart battery chargers are some of the safest and most advanced on the market. One of our best, the G3500 3. 5 Amp is designed to charge 6-volt and 12-volt lead-acid and lithium-ion batteries up to 120Ah. It can also effectively maintain automotive, marine, RV, power sport, lawn & garden and deep-cycle batteries. It charges 2x faster than ordinary battery chargers, can repair damaged batteries and is designed for use with micro-hybrid start-stop vehicles and CANBUS electrical systems. Guided by an onboard microcomputer, the G3500 monitors battery activity for safe and efficient charging, automatically minimizes energy consumption and provides redundant levels of safety protection, including spark-proof technology, as well as reverse polarity and overcharge protection. It can remain safely connected 24/7, while its streamlined design makes it ultra-compact, portable, and incredibly lightweight. The G3500 features external mounting holes and a rubberized base that avoids surface slipping and scratches, while remaining impact, UV and water-resistant (IP65). Intuitive LED indicators provide visual state-of-charge feedback and diagnostic information, even when in maintenance mode. Designed for use on 120-volt 50-60Hz electrical systems, the G3500 includes both X-Connect battery clamps with integrated eyelet terminals, as well as a 5-year limited .

Overall Product Rankings

1. DBPOWER Portable Battery Charger and Jump Starter
Overall Score: 9.5
Expert Reviews: 17
2. GOOLOO Portable Battery Charger and Jump Starter
Overall Score: 9.3
Expert Reviews: 10
3. Clore Automotive Jump Starter
Overall Score: 9.3
Expert Reviews: 16
4. NOCO Portable Car Battery Jump Starter Pack
Overall Score: 9.2
Expert Reviews: 15
5. Battery Tender Car Battery Charger
Overall Score: 9.2
Expert Reviews: 15
6. GOOLOO Quick Car Jump Starter and Charger
Overall Score: 9.1
Expert Reviews: 4
7. NOCO Car Battery Charger and Maintainer
Overall Score: 9.1
Expert Reviews: 15
8. BLACK+DECKER Battery Charger and Maintainer
Overall Score: 8.6
Expert Reviews: 18
9. STANLEY Car Power Station Jump Starter
Overall Score: 8.3
Expert Reviews: 14
10. MOTOPOWER Car Battery Charger and Maintainer
Overall Score: 8.0
Expert Reviews: 16

An Overview On Car Battery Chargers

A car battery charger is one of those things you might not think about buying until you need it, but then you will wish you had the foresight to purchase one in advance. Choosing the right vehicle battery jumper or charger device depends on several factors unique to your situation.

The primary consideration to determine is what type of car battery charger will best suit your needs.

Vicki Liston is the writer, producer and narrator of “On The Fly…DIY,” an award-winning home improvement and DIY show of unique project tutorials for the casual DIY’er.

“There are two basic types of car battery chargers: trickle and smart (also called multi-step) chargers,” shares Liston. “I don’t consider the float chargers to be actual ‘chargers,’ as they won’t resurrect a dead battery and are only used to maintain the charge.”

Learning the pros, cons and capabilities of a car battery charger type is helpful in the decision-making process.

“Trickle chargers are the most inexpensive,” Liston says, “but they are also the slowest.”

While this might seem like a downfall, it can be an advantage in certain situations.

“If you aren’t in a major rush to recharge, a trickle unit will serve you well,” explains Liston. “It’s actually better for the battery to charge slower than faster as a fast charge can generate a lot of heat and damage the battery.”

If safety is top of mind, a smart charger might be a better choice.

“Smart or multi-step chargers employ the use of a microprocessor to assess the battery and make automatic decisions about how to charge. The standard versions have the automatic stop feature to avoid overcharging, damage, and explosions,” Liston points out. “They can also detect if you’ve accidentally connected the cables to the wrong terminals, called ‘reverse polarity protection.’ A trickle charger will ruin a battery if connected incorrectly while a smart charger just won’t begin to charge at all. Understandably, these are the more expensive option, but they are also the safest.”

Be sure to check the amp rating on a potential car battery charger, as this will let you know how quickly it will charge your battery.

“Trickle chargers are rated at below one amp so it may take a few days to fully charge a battery,”  Liston says. “Again, slower is better for the battery, but you might not have the luxury of waiting around that long and need it up and running in a hurry.

“Higher rated chargers can run around 20 amps and the emergency ‘get this thing started NOW’ type chargers can crank out 40 amps to get you on the road in a hot minute,” continues Liston. “Some smart chargers allow you to choose a recharge setting based on your circumstances. You can set it lower when you have the time to wait and it won’t expend unnecessary, damaging heat. Set it higher only when the occasion calls for speed. You’ll have the best of both worlds in one charger.”

DWYM Fun Fact

The materials used to make vehicle batteries are recycled more than any other material used in consumer products in the world. A whopping 99% of battery lead is recycled, compared with 55% of aluminum cans, 45% of newspaper and 26% of tires and glass bottles.

Used lead grids, components and ingots as well as used plastic cases and pellets from an old car battery can be recycled into lead grids, cases and components for new automotive batteries.

Unfortunately, people do not always recycle responsibly. An estimated 1.8 million used batteries end up in landfills and other dangerous places. An improperly dumped lead-acid battery can leak lead, acid and mercury into the ground, lakes and streams.

The good news is that recycling used vehicle batteries is hassle-free. Most automotive parts retailers or dealership service departments will handle it for you. Just drop it off at a participating retailer. You might even receive a credit toward your need battery or even a general store credit when you do, making it a win-win for everyone.

The cycle for recycling automotive batteries is indefinite. The components of each vehicle’s battery are largely comprised of recycled lead and plastic, which can, in turn, be recycled over and over again.

The Car Battery Charger Buying Guide

  • If you decide on a trickle car battery charger, Liston highly recommends an advanced model to ensure the safest operation possible. “The lower end models should not be ‘attached and forgotten’ as they will not stop charging when the battery has reached maximum capacity,” advises Liston. “Because of this, they run the risk of overcharging and even causing an explosion. The higher-end models, usually referred to as advanced trickle chargers, can detect when a battery is fully charged and either stop or automatically switch over to ‘float’ mode to maintain the charge. “
  • Since you should always put safety first, the right clamps are essential. “Whether you go with a trickle or a smart charger, I highly recommend looking for a model with spark-proof clamps,” Liston notes. “Sparks can not only damage both the charger and the battery but they can cause fires so this safety feature should be a must.”
  • “If you are only looking to keep a car battery charged, opt for a 12-volt only model,” suggests Liston. “However, if you’ve got other types of battery-operated vehicles, such as an ATV, boat, jet ski, riding lawn mower, or golf cart, you might want to consider a 6/12 or a 12/24 volt charger. This will allow you to use your charger in multiple applications instead of having a different charger for each volt size. 6/12/24 chargers are commercially available however they are extremely expensive and it’s cheaper to own both a 6/12 and a 12/24 than one 6/12/24 version.”