A waterproof, app connected charger for RV and boat owners with lead acid or lithium house batteries up to about 100 Ah.
NAZ Solar Electric $152.15The Victron Blue Smart IP65 12/10 is the better battery charger overall, rated 3.6 to 2.5. The Victron Blue Smart IP65 12/10 leads on features, warranty and charge current. The Battery Tender Power Tender 8 A costs $42.20 less ($109.95 vs $152.15).
A good garage charger for 12 V car and truck owners who want quick recharges plus a supply for battery swaps.
Amazon $109.95Prices 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 12/10 for features (lithium mode, temperature compensation, repair mode, power supply mode vs power supply mode), warranty (5-year warranty vs 3-year warranty) and charge current (10 A vs 8 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 12/10 | Battery Tender Power Tender 8 A |
|---|---|---|
| Overall rating | 3.6/5 | 2.5/5 |
| Value 35% | 34 $15.21 per amp ($152.15, 10 A) | 39 $13.74 per amp ($109.95, 8 A) |
| Charge current 20% | 12 10 A | 0 8 A |
| Features 25% | 100 lithium mode, temperature compensation, repair mode, power supply mode | 25 power supply mode |
| Warranty 20% | 100 5-year warranty | 50 3-year warranty |
Specifications
| Victron Blue Smart IP65 12/10 | Battery Tender Power Tender 8 A | |
|---|---|---|
| Charging | ||
| Charge current | 10 A | 8 A |
| Voltage | 12 V | 12 V |
| Largest battery | 100 Ah | - |
| Lithium mode | Yes | - |
| AGM mode | No | - |
| Temperature compensation | Yes | - |
| Repair mode | Yes | - |
| Power supply mode | Yes | Yes |
| Build | ||
| Ingress rating | IP65 | IP65 |
| Weight | 2 lb | 2.1 lb |
| Warranty | 5 years | 3 years |
| Released | - | 2025-08-20 |
