Victron Blue Smart IP65 12/5
#1 in Up to 5 AFull review
A premium maintainer for RV, boat and classic car owners who want app monitoring and lithium support with a long warranty.
NAZ Solar Electric $102.85$102.85
4.1/5
The all rounder for most garages: fast enough to recover a flat car battery overnight and gentle enough to maintain a motorcycle all winter.
- 5 ACharge current
- 6/12 VVoltage
- YesLithium mode
- 3 yearsWarranty
Check price at Amazon$69.95
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Enough current to refill a typical car battery overnight
- Dedicated repair mode can revive sulfated lead acid batteries
- Lithium and AGM modes plus 6 V support cover nearly every vehicle in a garage
- IP65 housing with a mounting bracket for permanent installs
Cons
- No power supply mode for keeping settings during a battery swap
- Three year warranty is shorter than CTEK and Battery Tender offer
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 | 1 A | 2.9/5 | $29.95 |
| NOCO GENIUS2 | 2 A | 3.2/5 | $49.95 |
| NOCO GENIUS5 (this one) | 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 | GENIUS5 |
|---|---|
| Charging | |
| Charge current | 5 A |
| Voltage | 6/12 V |
| Largest battery | 120 Ah |
| Lithium mode | Yes |
| AGM mode | Yes |
| Temperature compensation | Yes |
| Repair mode | Yes |
| Power supply mode | No |
| Build | |
| Ingress rating | IP65 |
| Weight | 1.5 lb |
| Warranty | 3 years |
| Released | 2019-11-08 |
Alternatives in this current
Schumacher Rugged SC1682
#3 in Up to 5 AFull review
A tough, weatherproof maintainer for anyone keeping lead acid or lithium batteries topped up outdoors or in a damp garage.
Amazon $59.99$59.99
CTEK NXT 5
#4 in Up to 5 AFull review
A premium 4 A class charger and maintainer for owners who want lithium support and CTEK’s five year warranty in one compact unit.
Amazon $124.99$124.99
Compare
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