NOCO GENIUS1 1A Smart Battery Charger
- 1 A, 6 and 12 volt smart charger
- Lead-acid and LiFePO4 lithium batteries
- Force Mode, temperature compensation and desulfator
- Battery clamps and eyelet terminals, 1 port
- 1E+1 hours charge time entry, as listed
- 15.2 ounces, 4.02 x 3.43 x 6.73 inches
- 3 year limited warranty
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A low-current smart charger and maintainer for small batteries, covering lead-acid and lithium. It maintains well but will take a long time to restore a large battery.
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ASIN: B07W46BX31Model: GENIUS1Category: Car Battery Chargers
Sizes Available
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Overview
Clamping onto a battery or bolting to its terminals through eyelets, this low-current smart charger tops up and holds six and twelve volt batteries.
Chemistry coverage and safety functions are the strength for a unit this small. The limitation is current: it maintains, and a drained large battery will take a long time to refill.
Who it's for
Owners of scooters, motorcycles and lawn equipment who want a set-and-forget maintainer can leave it connected between seasons. Cars with big batteries that need real charging power should use a higher-rated charger.
Pros and cons
- Lead-acid and lithium supported
- Clamps and eyelet terminals both included
- Temperature compensation and Force Mode
- Low current only
- Single charging port
- Mounting bracket not listed
Performance notes
At this current the charger refills a battery slowly, which suits keeping a stored battery topped up. Temperature compensation shifts the charge profile with ambient conditions, and the desulfator mode targets sulfate build-up on lead plates. A deeply drained battery responds slowly.
Where it stands among car battery chargers
- #1 most-searched brand and model of the 14 car battery chargers lines we track (by search demand, not sales).
From the specs of the 23 car battery chargers we list; not a test result.
Specifications
| Brand | Noco |
|---|---|
| Model | GENIUS1 |
| Dimensions & fit | |
| Item weight | 15.2 ounces |
| Item Dimensions D x W x H | 4.02 x 3.43 x 6.73 inches |
| Capacity & performance | |
| Output Voltage | 6V and 12V |
| Power & efficiency | |
| Amperage | 1 A |
| Battery Charge Time | 1E+1 hours (as listed) |
| Input Voltage | 120 volts |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | Cars, boats, motorcycles, ATVs, RVs, trucks, SUVs, scooters, lawn mowers, tractors and more |
| Warranty & support | |
| Warranty Description | 3 Year Limited |
| Other details | |
| Number of Ports | 1 |
| Connector Type Used on Cable | Battery clamps and eyelet terminals |
| Specification Met | CEC, FCC, UL |
Closest rivals on specs
Battery Tender 800 Battery Charger- Amperage 1 vs 0.8 amps (+25%)
- Input Voltage 120 vs 100 volts (+20%)
MOTOPOWER MP00205A 800mA Battery Charger- Amperage 1 vs 0.8 amps (+25%)
- Item Weight 0.95 vs 0.66 pounds (+44%)
Frequently asked questions
Does the NOCO GENIUS1 work on a car battery?
Cars are on the compatibility list, but the low current means it maintains or recovers a car battery very slowly.
Does the NOCO GENIUS1 charge lithium batteries?
Yes. The title lists lithium (LiFePO4) alongside wet, gel and AGM lead-acid.
What does Force Mode do on the NOCO GENIUS1?
The title lists Force Mode but this listing does not explain it, so check the user guide.