Victron Blue Smart IP65 12/15
#1 in Over 5 AFull review
A long warranty, app connected charger for owners of larger lead acid or lithium batteries who value build quality over price.
NAZ Solar Electric $175.95$175.95
The Victron Blue Smart IP65 12/15 is the better battery charger overall, rated 3.9 to 3.8. The Battery Tender 15 A Charger wins on value. The Battery Tender 15 A Charger costs $69.95 less ($106 vs $175.95).
Battery Tender 15 A Charger
#3 in Over 5 AFull review
A fast, simple charger for owners of cars, trucks and boats who want to recharge flat 12 V batteries quickly with a long warranty.
Amazon $106$106
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 Battery Tender 15 A Charger for value ($7.07 per amp ($106, 15 A) vs $11.73 per amp ($175.95, 15 A)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 5 A battery charger; a clear win is highlighted. How we rank explains each one.
| Factor weight | Victron Blue Smart IP65 12/15 | Battery Tender 15 A Charger |
|---|---|---|
| Overall rating | 3.9/5 | 3.8/5 |
| Value 35% | 47 $11.73 per amp ($175.95, 15 A) | 72 $7.07 per amp ($106, 15 A) |
| Charge current 20% | 41 15 A | 41 15 A |
| Features 25% | 100 lithium mode, temperature compensation, repair mode, power supply mode | 50 features not published (neutral score used) |
| Warranty 20% | 100 5-year warranty | 100 5-year warranty |
Specifications
| Victron Blue Smart IP65 12/15 | Battery Tender 15 A Charger | |
|---|---|---|
| Charging | ||
| Charge current | 15 A | 15 A |
| Voltage | 12 V | 12 V |
| Largest battery | 150 Ah | - |
| Lithium mode | Yes | - |
| AGM mode | No | Yes |
| Temperature compensation | Yes | - |
| Repair mode | Yes | - |
| Power supply mode | Yes | - |
| Build | ||
| Ingress rating | IP65 | - |
| Weight | 2 lb | - |
| Warranty | 5 years | 5 years |
| Released | - | 2020-06-01 |