NOCO GENIUS2X4 4-Bank Smart Battery Charger — Efficient Multi-Battery Charging & Maintenance

Introducing the all-new GENIUS2X4, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS2X4 is a 6-volt and 12-volt four-bank battery charger, battery maintainer, trickle charger, and battery desulfator. It's rated at 8-amps (2-amps per bank) for all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as marine and deep-cycle batteries.

Stay powered up and ready for the road (or water, or workshop) with the NOCO GENIUS2X4 — a premium multi-bank charger and maintainer that combines power, intelligence, and versatility into one compact unit. Perfect for cars, motorcycles, marine craft, RVs, boats, lawn equipment, and more. 

40% Smaller + 140 % More Power

Improved Start Voltage Sensor. All-New Force Mode

CHARGE DEAD BATTERIES

The all-new start-voltage sensor allows the GENIUS to detect and charge dead batteries as low as 1-volt. For extremely dead batteries lower than 1-volt, manually turn on force mode to detect and charge batteries all the way down to zero volts.

THERMAL COMPENSATION
More Precise Charging in Any Climate

The new integrated thermal sensor automatically monitors and adjusts the charging cycle based on fluctuations of ambient temperature, limiting the chance of under-charging or over-charging, providing a more accurate and fully charged battery. Avoids under-charging in cold weather down to -4F and avoids over-charging in hot weather up to 104F.

Year-Round Charging. Zero Overcharge. Auto Memory
COMPLETELY AUTOMATIC

🔋 Key Features & Benefits

• Charge up to 4 batteries at once — The GENIUS2X4 supports 4 separate banks, delivering up to 8 amps total (2 amps per bank), so you can simultaneously charge or maintain multiple 6-volt or 12-volt batteries. 

• Wide battery compatibility — Works with most lead-acid types (flooded, AGM, gel, SLA, maintenance-free) as well as lithium-ion (Li-ion / LiFePO₄) batteries. Perfect for starter, marine, deep-cycle, and powersport batteries. 

• Automatic charging & maintenance modes — The built-in smart circuitry automatically manages charging, switching to float/trickle-charge or maintenance mode once the battery is full — safe to leave connected long-term without risk of overcharging. 

• Battery desulfator & battery recovery capabilities — Detects and reverses sulfation and acid stratification to help restore battery health. It can also charge deeply discharged batteries (as low as 1 V) using “Force Mode.” 

• Thermal compensation for safe charging in any climate — An onboard thermal sensor adjusts charging to ambient temperature, helping prevent under- or over-charging in extreme cold or heat. 

• Compact, rugged, and mountable — Smaller and more powerful than previous generation chargers, the GENIUS2X4 is designed for durability and can be wall-mounted in a workshop or garage for convenient charging. 

🔧 Why the GENIUS2X4 Stands Out

For anyone juggling multiple batteries — whether for vehicles, marine gear, tools, or seasonal equipment — the GENIUS2X4 simplifies battery care. Instead of needing several chargers or dealing with manual maintenance, this all-in-one unit takes care of charging, maintenance, desulfation, and recovery automatically. It’s a smart investment if you own multiple vehicles, machines, or seasonal gear and want them all ready to go with minimal effort. 

Ideal users: Car & motorcycle owners, boaters, RV owners, powersport and lawn-equipment users, workshop owners, and anyone who wants to safely store and maintain batteries long-term.

WHAT'S IN THE BOX