Onboard boat chargers are essential for keeping electronics powered and running smoothly on the open water. Whether you’re a recreational boater or a professional fisherman, having the best onboard boat charger is essential for long trips and extended voyages. With so many options on the market, it can be difficult to know which one is right for you. In this introduction, we’ll discuss the features to look for in an onboard boat charger and how to choose the best one that fits your needs. From perplexing technical specifications to bursty comparisons of different models, you’ll be sure to find the perfect onboard boat charger that will keep your electronics powered up on the open water.
Why Best Onboard Boat Charger Is Necessary?
An onboard boat charger is an essential piece of equipment for any boat, as it ensures that your boats battery is always fully charged. It is necessary to have a good quality boat charger that can handle the power requirements of the battery and provide a steady source of energy to keep it topped up. The best onboard boat chargers are designed to be efficient, safe, and reliable, providing a long-lasting charge that will prevent your battery from becoming drained or overcharged. Furthermore, these chargers are usually waterproof and dustproof, making them ideal for use in marine environments.
Comperision Chart for best onboard boat charger
SERIAL
1
PRODUCT IMAGE

PRODUCT NAME
NOCO Genius GEN5X2, 2-Bank, 10A (5A/Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries
ACTION
SERIAL
2
PRODUCT IMAGE

PRODUCT NAME
NOCO Genius GEN5X1, 1-Bank, 5A (5A/Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries
ACTION
SERIAL
3
PRODUCT IMAGE

PRODUCT NAME
NOCO Genius GEN5X3, 3-Bank, 15A (5A/Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries
ACTION
SERIAL
4
PRODUCT IMAGE

PRODUCT NAME
NOCO Genius GENPRO10X1, 1-Bank, 10A (10A/Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries
ACTION
SERIAL
5
PRODUCT IMAGE

PRODUCT NAME
NOCO Genius GENPRO10X2, 2-Bank, 20A (10A/Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries
ACTION
NOCO Genius GEN5X2 2-Bank, 10A (5A-Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries

Introducing the NOCO Genius GEN5X2, the most powerful onboard marine battery charger yet. This two-bank charger is rated at 10A (5A/Bank) and is capable of charging 12V deep-cycle batteries, AGM, and Lithium (LiFePO4) batteries. It’s smaller than its predecessor, the GENM2, but packs 43% more power. With selectable charging modes and a built-in thermal sensor to guard against overcharging in hot climates or undercharging in cold climates, this charger is one of the most advanced on the market.
Why We Like This:
Smaller than its predecessor but with more power – 37% smaller and 43% more power make it one of the best performing onboard marine battery chargers
Multiple banks – A two-bank onboard battery charger rated a 10-amps – 5-amps per bank – for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries
Charging modes – Independently charge and control each battery bank with selectable charging modes – including 12V, 12V AGM, 12V Lithium, and 12V Repair Mode
Precision charging – An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates or undercharging in cold climates
Dead Battery Charge – Charges batteries as low as 1 volt or use force mode to manually begin charging dead batteries down to zero volts.
Common Questions & Answers:
Q: Is this waterproof?
A: Yes! The NOCO Genius GEN5X2 is designed for marine applications and is waterproof according to IP67 standards.
Q: Does it come with a warranty?
A: Yes! The NOCO Genius GEN5X2 comes with a two year limited warranty.
Q: What type of batteries can this charger work with?
A: The NOCO Genius GEN5X2 can work with all types of lead acid and lithium ion batteries as well as AGM batteries and lithium ion (LiFeP04) batteries.
Additional Product Information
Height | 5.39 |
Length | 7.2 |
Weight | 5.26 |
Width | 9.15 |
Size | 10A (5A per Bank) |
NOCO Genius GEN5X1 1-Bank, 5A (5A-Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries

The NOCO Genius GEN5X1 is the perfect choice for any marine battery charging needs. This one-bank charger is rated 5A (5A/Bank) and can be used to charge 12V batteries, including Marine, Boat, Starter and Deep-Cycle batteries. The charger also has selectable charging modes, such as 12V, 12V AGM, 12V Lithium and 12V Repair Mode for lead-acid and lithium-ion batteries. It also has a thermal sensor that can detect ambient temperature and adjust the charge accordingly to prevent overcharging or undercharging. The GEN5X1 is 37% smaller than its predecessor and delivers 43% more power. Plus, it can charge batteries as low as 1 Volt or use the force mode to manually begin charging dead batteries down to zero volts.
Why We Like This
Smaller design – 37% smaller than its predecessor while still delivering 43% more power.
Multiple banks – A one-bank onboard battery charger rated at 5 amps per bank for 12-volt batteries.
Charging modes – Selectable charging modes (12V,12V AGM,12V Lithium and 12V Repair Mode) for lead-acid and lithium ion batteries
Precision Charging – An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate overcharging or undercharging.
Charge Dead Batteries – Charges down to zero volts with manual control of force mode if necessary.
Common Questions & Answers
Q: What type of batteries is this suitable for?
A: The NOCO Genius GEN5X1 is suitable for all types of 12 volt batteries including Marine, Boat, Starter and Deep Cycle Batteries. It also has selectable charging modes for lead acid and lithium ion batteries.
Q: Can this charge dead batteries?
A: Yes! The Genius GEN5X1 can charge down to 1 volt or use the force mode to manually begin charging dead batteries down to zero volts if necessary.
Q: Does this have a thermal sensor?
A: Yes! The charger has an integrated thermal sensor that detects ambient temperature and adjusts the charge accordingly so you don’t have to worry about overcharging or undercharging your battery.
Additional Product Information
Height | 3.8 |
Length | 1.9 |
Weight | 2.59 |
Width | 5.1 |
Size | 5A (5A per Bank) |
NOCO Genius GEN5X3 3-Bank, 15A (5A-Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries

If youre looking for a reliable and efficient battery charger for your marine applications, look no further than the NOCO Genius GEN5X3. This three-bank onboard battery charger is rated at 15 amps, 5 amps per bank, and is suitable for 12-volt batteries. It has selectable charging modes including 12V, 12V AGM, 12V Lithium and 12V Repair Mode for all types of lead-acid and lithium-ion batteries. With its integrated thermal sensor that detects the ambient temperature and adjusts the charge accordingly to prevent overcharging in hotter climates and undercharging in colder climates, it can even charge dead batteries down to 1 volt.
Why We Like This
37% smaller than previous models with 43% more power
Three independent banks with selectable charging modes
Integrated thermal sensor for optimal charging conditions
Charges dead batteries down to 1 volt
Force mode allows you to manually begin charging dead batteries down to zero volts
Common Questions & Answers
Q: Does this work with AGM or Lithium batteries?
A: Yes, this charger is designed to work with both AGM and Lithium batteries.
Q: Is it waterproof?
A: Yes, this charger is designed to be waterproof so you can use it in wet environments.
Q: Can I use this on my boat?
A: Yes, this charger is designed specifically for marine applications so it can be used on boats.
Additional Product Information
Height | 5.63 |
Length | 10.08 |
Weight | 6.09 |
Width | 8.86 |
Size | 15A (5A per Bank) |
NOCO Genius GENPRO10X1 1-Bank, 10A (10A-Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries

The NOCO Genius GENPRO10X1 is an incredible piece of technology for any boat or marine battery. It’s one of the best performing onboard battery chargers available, offering one-bank charging with 10 amps per bank. It’s also incredibly small, measuring 41% smaller than the GEN1. But don’t let its size fool you; it still delivers 33% more power!
Not only that, but you get a number of selectable charging modes for all types of lead-acid and lithium-ion batteries. This includes 12V, 12V AGM, 12V Lithium, and 12V Repair Mode. An integrated thermal sensor also detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates. Plus, you can even charge dead batteries as low as 1 volt! Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
Why We Like This
Small size 41% smaller than the GEN1 model, yet 33% more powerful.
Multiple banks One-bank onboard battery charger rated at 10 amps per bank for 12-volt batteries.
Charging modes Includes 12V, 12V AGM, 12V Lithium, and 12V Repair Mode for all types of lead-acid and lithium-ion batteries.
Precision charging Integrated thermal sensor detects ambient temperature and adjusts charge accordingly.
Charge dead batteries Charges down to 1 volt or use force mode to manually start charging dead batteries down to zero volts.
Common Questions & Answers
Q: Is this compatible with marine batteries?
A: Yes! The NOCO Genius GENPRO10X1 is designed specifically for marine batteries it has a one-bank charger rated at 10 amps per bank for 12-volt batteries such as marine, boat, starter, and deep cycle batteries.
Q: Can I use this in cold climates?
A: Absolutely! The battery charger has an integrated thermal sensor that detects the ambient temperature and alters the charge accordingly to eliminate over-charging in hot climates and under-charging in cold climates.
Q: Can I use this to charge dead batteries?
A: Yes! You can charge down to 1 volt or use the new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
Additional Product Information
Height | 5.6 |
Length | 2.8 |
Weight | 5.14 |
Width | 5.8 |
Size | 10A (10A per Bank) |
NOCO Genius GENPRO10X2 2-Bank, 20A (10A-Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries

Introducing the NOCO Genius GENPRO10X2: the perfect onboard marine battery charger. This two-bank, 20A (10A/Bank) smart marine battery charger is 12V waterproof and designed to maintain and desulfate AGM, Lithium (LiFePO4) and deep-cycle batteries. It’s 19% smaller than its predecessor, the GEN2, but delivers 33% more power – making it one of the best performing battery chargers we’ve ever seen.
Why We Like This
Multiple banks: A two-bank onboard battery charger rated a 20-amps – 10-amps per bank – for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
Charging modes: Independently charge and control each battery bank with selectable charging modes – including 12V, 12V AGM, 12V Lithium, and 12V Repair Mode – for all types of lead-acid and lithium-ion batteries.
Enjoy precision charging: An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
Charge dead batteries: Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
Durable design: The rugged IP67 waterproof construction ensures reliable performance in harsh environments or even when submerged in water up to one meter deep.
Common Questions & Answers
Q1: Can this charger maintain my AGM/Lithium/Deep Cycle Batteries?
A1: Yes! This charger is designed specifically for AGM, Lithium (LiFePO4) and Deep Cycle Batteries – making it a perfect fit for your needs.
Q2: Does this charger come with any safety features?
A2: Absolutely! It comes with an integrated thermal sensor that detects the ambient temperature and alters the charge to eliminate overcharging or undercharging in any climate conditions. It also has a rugged IP67 waterproof construction so it can handle any environment or even be submerged up to one meter deep without issue!
Q3: What is included with this charger?
A3: The NOCO Genius GENPRO10X2 includes an owners manual with detailed instructions on how to use the product safely as well as a 3 year limited warranty from NOCO against defects in materials or workmanship when used according to instructions.
Additional Product Information
Height | 6.06 |
Length | 10.28 |
Weight | 8.74 |
Width | 9.25 |
Size | 20A (10A per Bank) |
Benefits of Best Onboard Boat Charger
1. Safe and Reliable: A best onboard boat charger provides reliable, safe and efficient charging for your boat’s electronics and batteries. It is designed to protect your battery from overcharging, overheating and short-circuiting.
2. Easy Installation: Installing a best onboard boat charger is easy. It can be plugged into an AC outlet or directly wired to the battery bank for ultimate convenience.
3. Increased Battery Life: Using a best onboard boat charger can help extend your battery life by providing a consistent charge over time. This helps keep the battery in peak condition and reduces the need for expensive replacements or repairs in the future.
4. Multi-Stage Charging: Many of the best onboard boat chargers offer multi-stage charging, which ensures that your battery gets just the right amount of charging power for optimal performance and longevity.
5. Convenience: Best onboard boat chargers are compact and lightweight, making them easy to store when not in use and convenient to carry with you on your boat trips. They also come with automatic shutoff features, so you don’t have to worry about forgetting to turn it off after charging is complete.
Buying Guide for best onboard boat charger
Types of Onboard Boat Chargers
Onboard boat chargers are electronic devices which are used to charge the batteries on your boat, and they come in all different shapes and sizes. There are several types of onboard boat chargers that you should consider when making your purchase.
The first type is the standard onboard charger. These chargers are designed to work with most battery types, including lead-acid, gel cell, AGM, and deep cycle batteries. They typically feature multiple charging stages for optimized charging and can be used with either 12 or 24 volts DC systems. The main advantage of these chargers is that theyre relatively inexpensive and easy to install.
The second type of onboard charger is a smart battery charger. Smart chargers offer more precise control over the charging process by utilizing advanced algorithms to optimize battery performance. Theyre usually more expensive than standard chargers but offer better long-term performance for your boats batteries. Smart chargers can also be programmed to provide additional features such as temperature compensation or equalization cycles for improved battery life and performance.
The third type of charger is a combination charger/maintainer, which combines the features of both a standard onboard charger and a smart battery charger into one unit. These units can provide fast charging capabilities as well as advanced maintenance functions such as diagnostics or desulfation cycles for improved battery health and longevity. Combination units tend to be more expensive than standard or smart chargers but are worth considering if you want the best of both worlds in one package.
Features To Consider
When shopping for an onboard boat charger, there are several features you should consider before making your purchase:
First, look for a unit that has multiple charging stages so it can provide the best possible charge for your marine batteries without damaging them over time. Also consider if you want an automatic temperature compensation feature so it can adjust its charging parameters based on ambient temperatures in your boats environmentthis will help keep your batteries from becoming overcharged or undercharged due to extreme temperatures.
If youre looking for a unit that offers more advanced features such as diagnostics or equalization cycles, make sure it has those capabilities before purchasing itnot all chargers offer these features so its important to check before buying one that doesnt have them built-in already. Additionally, look at what type of warranty coverage each unit offers so you have some recourse if something goes wrong with your charger down the line.
Safety Considerations
Its also important to consider safety when shopping for an onboard boat chargermake sure you only purchase a unit with UL certification or other safety ratings from reputable organizations such as ETL or CE approved productsthis will help ensure the product meets industry standards in terms of safety and performance before making your purchase decision. Additionally, make sure any cables you use with the charger are rated for marine use so they wont corrode over time due to exposure to saltwater environmentsthis will help prevent any potential electrical shorts while using the device on board your vessel.
The best onboard boat charger is an essential part of any boater’s toolkit. Having a reliable, efficient, and powerful charger is essential for keeping your boat running and ready for any adventure. With the right charger, you can rest assured that you’re able to get the most out of your trip. Whether it’s keeping your batteries topped off or powering your electronics, the best onboard boat charger can make all the difference. With the right features and specs, you can trust that you’re getting the most out of your purchase.