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
The Victron Blue Smart IP65 12/5 is the better battery charger overall, rated 4.4 to 3.7. The Victron Blue Smart IP65 12/5 leads on features, value and charge current. The Victron Blue Smart IP65 12/5 costs $11.14 less ($102.85 vs $113.99).
CTEK CT5 Time to Go
#6 in Up to 5 AFull review
For car owners who want to know exactly when the battery will be ready, with AGM support for modern start stop vehicles.
Amazon $113.99$113.99
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Victron Blue Smart IP65 12/5 for features (lithium mode, temperature compensation, repair mode, power supply mode vs temperature compensation, repair mode), value ($20.57 per amp ($102.85, 5 A) vs $26.51 per amp ($113.99, 4.3 A)) and charge current (5 A vs 4.3 A).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 5 A battery charger; a clear win is highlighted. How we rank explains each one.
| Factor weight | Victron Blue Smart IP65 12/5 | CTEK CT5 Time to Go |
|---|---|---|
| Overall rating | 4.4/5 | 3.7/5 |
| Value 35% | 53 $20.57 per amp ($102.85, 5 A) | 41 $26.51 per amp ($113.99, 4.3 A) |
| Charge current 20% | 100 5 A | 82 4.3 A |
| Features 25% | 100 lithium mode, temperature compensation, repair mode, power supply mode | 50 temperature compensation, repair mode |
| Warranty 20% | 100 5-year warranty | 100 5-year warranty |
Specifications
| Victron Blue Smart IP65 12/5 | CTEK CT5 Time to Go | |
|---|---|---|
| Charging | ||
| Charge current | 5 A | 4.3 A |
| Voltage | 12 V | 12 V |
| Largest battery | - | 160 Ah |
| Lithium mode | Yes | No |
| AGM mode | No | Yes |
| Temperature compensation | Yes | Yes |
| Repair mode | Yes | Yes |
| Power supply mode | Yes | No |
| Build | ||
| Ingress rating | IP65 | IP65 |
| Weight | 2 lb | - |
| Warranty | 5 years | 5 years |
| Released | - | 2018-07-30 |