NOCO GENIUS5 5A Smart Battery Charger
- 5 A, 6 and 12 volt smart charger
- Lead-acid and LiFePO4 lithium batteries up to 120 Ah
- Force Mode for batteries down to zero volts
- Thermal sensor for temperature compensation
- 8 hour listed charge time
- Bracket, strap and screws included
- 1.6 pounds, 3.43 x 4.61 x 7.95 inches
- 3 year limited warranty
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A mid-sized smart charger for six and twelve volt batteries up to a large stated capacity, including lithium. It charges and maintains but includes no engine start function.
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ASIN: B07W8KJH44Model: GENIUS5Category: Car Battery Chargers
Overview
A garage shelf or workbench corner is the natural home for this smart charger, which comes with a bracket and strap for fixed mounting.
Enough current to charge rather than only maintain, plus the temperature sensor and Force Mode, widens what it can recover. The limitation is its charger-only role.
Who it's for
Owners who want faster charging than a trickle unit can use it across cars, boats and powersports vehicles. Those who need engine starting power should use a jump starter instead.
Pros and cons
- Lead-acid and lithium supported
- Thermal sensor for temperature compensation
- Force Mode for dead batteries
- Bracket and strap included
- No engine start function
- Single charging port
- Connector entry lists clamps only
Performance notes
The sensor adjusts the charging profile for ambient temperature, which protects against overcharge in hot garages and undercharge in cold ones. Pulse charging works against sulfation, and the monitoring system tapers current as the battery fills. Time to full depends on how drained the battery is and its capacity.
Where it stands among car battery chargers
- #2 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 | GENIUS5 |
| Dimensions & fit | |
| Item weight | 1.6 pounds |
| Item Dimensions D x W x H | 3.43 x 4.61 x 7.95 inches |
| Capacity & performance | |
| Output Voltage | 6V and 12V |
| Battery capacity | Up to 120 amp-hours |
| Power & efficiency | |
| Amperage | 5 A |
| Battery Charge Time | 8 hours |
| Input Voltage | 120 volts |
| 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 |
| Specification Met | CEC, FCC, UL |
Closest rivals on specs
Battery Tender Plus 1.25A Battery Charger and Maintainer- Amperage 5 vs 1.25 amps (+300%)
CTEK CS ONE Gen 2 Smart Battery Charger with WiFi- Amperage 5 vs 1.8 amps (+178%)
Battery Tender 800 Battery Charger- Amperage 5 vs 0.8 amps (+525%)
- Input Voltage 120 vs 100 volts (+20%)
Frequently asked questions
Is the NOCO GENIUS5 a jump starter?
No. It is a charger and maintainer, and the listing mentions no engine start function.
Does the NOCO GENIUS5 charge lithium batteries?
Yes. The title lists lithium (LiFePO4) alongside wet, gel and AGM lead-acid.
What mounts and cables come with the NOCO GENIUS5?
The listing names a mounting bracket with a strap, screws and needle-nose battery clamps with integrated eyelet terminals.