NOCO GENIUS2X4 4-Bank Battery Charger
- 4 banks, 8A total, 2A per bank
- 6V and 12V lead-acid and LiFePO4 lithium
- Charges from 1 volt, Force Mode down to zero
- Thermal sensor temperature compensation
- 120-240VAC input, 4 AC cables for US, UK, EU, AU
- 3-year warranty, CEC, FCC, UL
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A four bank smart charger that maintains several small batteries at once and can stay connected indefinitely. Low current per bank makes it slow for large, deeply drained batteries.
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ASIN: B08FYS6CL8Model: GENIUS2X4Category: Car Battery Chargers
Overview
Charging and maintaining four batteries at once from one unit is what the NOCO four bank charger does. Each bank handles lead-acid or lithium batteries, adjusts to ambient temperature and can stay connected through a whole storage season.
NOCO lets a garage full of motorcycles, mowers and boats sit on one maintainer all winter. With low current per bank, it is a keeper of charge rather than a fast recharger for big car batteries.
Who it's for
Collectors and powersport owners with batteries sitting for months get the most from four independent banks. Drivers wanting fast charging for a single car battery should choose a higher amp unit.
Pros and cons
- Four independent banks
- Lead-acid and lithium support
- Recovers very low batteries
- Desulfation pulse charging
- Low current per bank
- Slow on large batteries
- Many cables to manage
Performance notes
Each bank charges at a low rate, which suits maintenance and small powersport batteries. The thermal sensor raises or lowers voltage with temperature, avoiding overcharge in heat and undercharge in cold.
Specifications
| Brand | Noco |
|---|---|
| Model | GENIUS2X4 |
| Dimensions & fit | |
| Item weight | 7.8 pounds |
| Item Dimensions D x W x H | 5.71 in D x 9.88 in W x 10.79 in H |
| Capacity & performance | |
| Max battery capacity | Up to 40 amp-hours per description |
| Output Voltage | 6V and 12V |
| Power & efficiency | |
| Input Voltage | 120-240VAC |
| Battery types | Lead-acid (AGM, Gel, SLA, VRLA, flooded), lithium-ion LiFePO4 |
| Warranty & support | |
| Warranty Description | 3-Year Limited |
| Other details | |
| Number of Ports | 4 |
| Connector Type Used on Cable | Battery clamps and eyelet terminals |
| Specification Met | CEC, FCC, UL |
| Current Rating | 8 A total, 2A per bank |
| BuiltIn Media | (4) 75-inch AC cables, (4) 21-inch clamps with eyelets, (4) 10-foot DC extension cables |
Frequently asked questions
Can the NOCO four bank charger handle lithium batteries?
Yes. It works with 6-volt and 12-volt lead-acid and lithium-ion (LiFePO4) batteries.
Can the NOCO four bank charger stay connected all winter?
Yes. It monitors the battery and can be left connected indefinitely without overcharging.
Can the NOCO four bank charger revive a dead battery?
It charges from as low as 1 volt, and Force Mode allows manual charging down to zero volts.
What comes with the NOCO four bank charger?
The charger, four 75-inch AC cables, four 21-inch battery clamps with eyelet terminals and four 10-foot DC extension cables.