NOCO GENIUS2
#9 in Up to 5 AFull review
A weatherproof maintainer for motorcycles, ATVs and cars in storage that also handles lithium batteries. Owners of big truck or RV batteries should step up to a GENIUS5 or GENIUS10.
Amazon $49.95$49.95
2.9/5
A cheap, capable maintainer for motorcycles, mowers and stored cars. Pick a bigger charger if you need to refill flat car batteries quickly.
- 1 ACharge current
- 6/12 VVoltage
- YesLithium mode
- 3 yearsWarranty
Check price at Amazon$29.95
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Plugs straight into the wall with a 106 in cable, so it reaches a battery from an outlet across the garage floor
- Lithium and AGM modes let one maintainer cover a motorcycle, a mower and a car
- Force Mode can bring back a battery drained below 1 V that other maintainers refuse to charge
- Costs less than most branded maintainers
Cons
- At 1 A it takes days to refill a flat car battery; it is meant for small batteries and storage
- IP60 rating means it should stay out of the rain
- Wall plug body can block the neighboring outlet
The NOCO GENIUS family
Every NOCO GENIUS model we rank, smallest first. Ratings compare each against its own current.
| Model | Charge current | Rating | Price |
|---|---|---|---|
| NOCO GENIUS1 (this one) | 1 A | 2.9/5 | $29.95 |
| NOCO GENIUS2 | 2 A | 3.2/5 | $49.95 |
| NOCO GENIUS5 | 5 A | 4.1/5 | $69.95 |
| NOCO GENIUS10 | 10 A | 3.5/5 | $99.87 |
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its current. How we rank explains each one.
Specifications
| Model number | GENIUS1 |
|---|---|
| Charging | |
| Charge current | 1 A |
| Voltage | 6/12 V |
| Largest battery | 30 Ah |
| Lithium mode | Yes |
| AGM mode | Yes |
| Temperature compensation | Yes |
| Repair mode | Yes |
| Power supply mode | No |
| Build | |
| Ingress rating | IP60 |
| Weight | 0.8 lb |
| Warranty | 3 years |
| Released | 2019-11-08 |
Alternatives in this current
Schumacher SP1297
#10 in Up to 5 AFull review
A budget 12 V maintainer for owners with a mix of lead acid and lithium batteries. It suits storage duty more than fast recharging.
Amazon $44.32$44.32
Optima Digital 400+
#12 in Up to 5 AFull review
A maintainer for owners of OPTIMA AGM or lithium batteries who want matched charge settings and a clear display. Others can get more amps for the money.
Amazon $149.99$149.99
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