Oh man, I’ve been there turn the key, and nothing… a dead battery! That’s when I first got my hands on NOCO Genius 1 vs 2, hoping for a hassle-free fix. After using both, I noticed Genius 1 is perfect for small batteries, but Genius 2 charges faster and handles bigger jobs. If you’re stuck choosing, don’t worry I’ll break down everything in simple terms so you get exactly what you need.
Quick Look
NOCO Genius 1 offers 1A charging, ideal for small batteries and trickle charging, while Genius 2 delivers 2A charging twice as fast and better for larger batteries. Genius 2 also features a thermal sensor for optimal performance in extreme temperatures. Learn more in our guide on the best NOCO battery chargers for cars for expert recommendations.
NOCO Genius 1 – 1A Smart Charger for Battery Maintenance
Hello buddy, the NOCO Genius 1 is a 1A smart charger for 6V and 12V batteries. It’s a compact, all-in-one solution for charging, maintaining, and restoring batteries in motorcycles, ATVs, cars, boats, and more. Learn more in our guide on trickle charger vs. battery maintainer to find the right option for your needs.
- Charging Current: 1A
- Battery Compatibility: 6V & 12V (Lead-acid, AGM, Gel, Lithium, Deep-Cycle)
- Size: 4.02″D x 3.43″W x 6.73″H
- Weight: 15.2 ounces
Features
- Smart Charging – Adjusts power for safe and efficient charging.
- Thermal Sensor – Prevents overcharging in heat and undercharging in cold.
- Dead Battery Recovery – Charges batteries as low as 1V, with Force Mode for 0V.
- Battery Repair Mode – Restores performance and extends battery life.
- Automatic Maintenance – Keeps batteries healthy 24/7.
Pros
- Compact and lightweight.
- Works with multiple battery types.
- Revives dead batteries.
- Automatic trickle charging.
Con
- 1A charging speed is slow for larger batteries.
What’s in the Box?
- NOCO Genius 1 Charger
- Battery Clamps with Eyelets
- User Manual
NOCO Genius 2 | Faster Battery Charging with Smart Technology & Repair Mode
Hello buddy, the NOCO Genius 2 is a 2A smart charger for 6V and 12V batteries. It’s a step up from the Genius 1, offering faster charging, better recovery for dead batteries, and advanced maintenance. Perfect for motorcycles, ATVs, cars, boats, RVs, and more, this charger ensures strong battery performance all year round. Learn more in our guide on the best car battery chargers for dead batteries for top recommendations.
- Charging Current: 2A
- Battery Compatibility: 6V & 12V (Lead-acid, AGM, Gel, Lithium, Deep-Cycle)
- Size: 3.43″D x 4.25″W x 6.97″H
- Weight: 1.2 pounds
Features
- Smart Charging – Adjusts power for safe and efficient battery charging.
- Digital Thermal Sensor – Prevents overcharging in heat and undercharging in cold.
- Dead Battery Recovery – Charges batteries as low as 1V, with Force Mode for 0V.
- Battery Repair Mode – Restores lost battery performance for longer life and stronger engine starts.
- Automatic 24/7 Maintenance – Keeps batteries charged without overcharging.
Pros
- 2A charging speed is twice as fast as the Genius 1.
- Supports a wide range of battery types.
- Recovers completely dead batteries.
- Smart maintenance prevents battery damage.
Con
- Slightly larger and heavier than the Genius 1.
What’s in the Box?
- NOCO Genius 2 Charger
- Battery Clamps with Eyelets
- User Manual
Key Differences & Similarities
Alright, let’s make this easy. If you’re deciding between the NOCO Genius 1 and Genius 2, understanding their key differences will help. Both are smart chargers, but they’re designed for different needs. Learn more in our guide on the best solar car battery chargers with overcharge protection for the best options.
Key Differences
- Charging Speed & Power – NOCO Genius 1 delivers 1 amp (A) of power, while Genius 2 steps it up with 2A charging. This means Genius 2 charges twice as fast as Genius 1. If you want to get back on the road quicker, Genius 2 is the way to go.
- Battery Compatibility – Genius 1 is best for small batteries, like motorcycles, ATVs, lawnmowers, and snowmobiles. Genius 2, on the other hand, works with both small and large batteries, including cars, boats, and deep-cycle batteries. If you have multiple vehicles, Genius 2 is more versatile.
- Temperature Sensor – One big advantage of Genius 2 is the built-in thermal sensor. This adjusts the charging rate depending on the surrounding temperature. In extreme heat or cold, this helps protect your battery from overcharging or undercharging. Genius 1 doesn’t have this feature, so if you live in a place with harsh weather, Genius 2 is the safer bet.
- Size & Portability – Genius 1 is more compact and lightweight, making it easier to store or carry. Genius 2 is slightly larger, but it’s still easy to handle. If you need something ultra-portable, Genius 1 is the better fit.
Similarities
- Smart Charging Technology – Both chargers automatically detect your battery’s needs and adjust the charge accordingly. Once your battery is full, they stop charging to prevent overcharging.
- 6V & 12V Battery Support – Whether you need to charge a 6V motorcycle battery or a 12V car battery, both models work with lead-acid, AGM, and lithium-ion batteries.
- Safety Features – NOCO is known for its safety. Both models come with spark-proof technology and reverse polarity protection, which means they won’t cause damage even if you accidentally connect the clamps the wrong way.
- Battery Maintenance Mode – If you want to keep your battery healthy and long-lasting, both chargers offer a trickle charge mode that helps prevent battery drain when your vehicle is not in use.
NOCO Genius 1 vs 2: Size, Portability & Weight Comparison
When choosing a battery charger, size and portability matter, especially if you need something compact for storage or travel. Both the NOCO Genius 1 and Genius 2 are lightweight and portable, but they have key differences. Learn more in our guide on the best recommended car battery chargers to find the right option for you.
NOCO Genius 1 – Ultra-Compact & Lightweight
- Smaller size and lightweight design make it easy to store in toolboxes, glove compartments, or small storage areas.
- Ideal for users who need a portable charger for small batteries or occasional use.
- Perfect for motorcycles, ATVs, and lawn equipment, where space is limited.
NOCO Genius 2 – Slightly Larger but Still Portable
- While still compact, the NOCO Genius 2 is slightly bigger due to its higher power output.
- Still lightweight and easy to handle, making it a great option for home use or taking on the road.
- Works well for car, marine, and deep-cycle batteries, where a bit more power is needed.
Which One is More Portable?
- If you need the smallest, most lightweight option, the NOCO Genius 1 is the better choice. Learn more in our guide on the best portable car battery chargers for top recommendations.
- If you need faster charging and versatility, while still keeping things portable, the NOCO Genius 2 is worth the slight increase in size.
Safety Tips & Maintenance – Keep Your NOCO Charger Working Smoothly
1. Charge in a Safe Place
Always charge in a dry, well-ventilated area to prevent overheating. Avoid placing the charger near flammable materials. Never charge inside a closed garage where gases can build up.
2. Connect and Disconnect the Right Way
- First, connect the positive (+) clamp, then the negative (-).
- When disconnecting, unplug the charger first, then remove the clamps in reverse order.
3. Check Your Battery’s Health
A weak or damaged battery can cause problems even with a good charger. Check these voltage levels every 3-6 months:
- 12.4V – 12.7V = Healthy battery.
- 11.8V or lower = Weak battery, may need replacing.
- Swollen or leaking battery? Stop charging immediately.
4. Keep the Charger and Cables in Good Condition
- Clean the clamps every 2-3 months for a strong connection.
- Check for frayed cables or cracks before use.
- Store the charger between 32°F – 104°F (0°C – 40°C) to avoid damage.
5. Avoid Overcharging
NOCO chargers automatically stop when the battery is full, but it’s still a good idea to unplug it when done.
- Small batteries (motorcycles, ATVs): Usually charge in 4-6 hours.
- Car batteries: May take 6-12 hours depending on the charge level.
Final Words
Yes, both NOCO Genius 1 vs 2 are excellent smart chargers, but choosing the right one depends on your needs. Genius 1 is perfect for small batteries and slow trickle charging, while Genius 2 offers faster charging and more power for larger batteries. Both provide smart safety features and reliable performance, making them a great choice for keeping your battery in top shape. Learn more in our guide on the best trickle chargers for car batteries for top-rated options.
FAQs
Q1. Can NOCO Genius 1 or 2 charge lithium batteries safely?
Both models support lithium-ion batteries, but it’s important to select the correct charging mode. Genius 2 handles larger lithium batteries more efficiently due to its higher 2A output.
Q2. What happens if I connect the clamps incorrectly?
NOCO Genius chargers have reverse polarity protection, meaning they won’t deliver power if the clamps are connected the wrong way. This feature helps prevent short circuits and battery damage.
Q3. How long does it take to fully charge a car battery with NOCO Genius 1 vs 2?
Genius 1 takes up to 24 hours to charge a fully drained 50Ah battery, while Genius 2 can do the same job in 12-15 hours due to its higher 2A charging speed.
Q4. Can I leave the NOCO Genius charger connected during winter storage?
Both chargers are designed for long-term battery maintenance. They automatically adjust voltage to prevent overcharging, making them perfect for winter storage of cars, motorcycles, and boats.
Q5. Does NOCO Genius 2 make a difference for daily drivers?
Genius 2 is the better option for daily drivers since it charges faster and keeps the battery at peak performance. Genius 1 is more suited for occasional use or small batteries.
Q6.What is the main difference between NOCO Genius 1 and NOCO Genius 2?
NOCO Genius 1 is 1A and best for small batteries and slow charging. NOCO Genius 2 is 2A, charges twice as fast, and works better for larger batteries.