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
The Battery Tender 15 A Charger is the better battery charger overall, rated 3.8 to 3.7. The Battery Tender 15 A Charger leads on warranty. The Battery Tender 15 A Charger costs $3.99 less ($106 vs $109.99).
Schumacher Rugged SC1685
#5 in Over 5 AFull review
A rugged 15 A charger for drivers and boaters who want fast charging, lithium support and a service mode in one weatherproof unit.
Amazon $109.99$109.99
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 Battery Tender 15 A Charger for warranty (5-year warranty vs 3-year warranty).
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 | Battery Tender 15 A Charger | Schumacher Rugged SC1685 |
|---|---|---|
| Overall rating | 3.8/5 | 3.7/5 |
| Value 35% | 72 $7.07 per amp ($106, 15 A) | 70 $7.33 per amp ($109.99, 15 A) |
| Charge current 20% | 41 15 A | 41 15 A |
| Features 25% | 50 features not published (neutral score used) | 75 lithium mode, repair mode, power supply mode |
| Warranty 20% | 100 5-year warranty | 50 3-year warranty |
Specifications
| Battery Tender 15 A Charger | Schumacher Rugged SC1685 | |
|---|---|---|
| Charging | ||
| Charge current | 15 A | 15 A |
| Voltage | 12 V | 6/12 V |
| Lithium mode | - | Yes |
| AGM mode | Yes | No |
| Temperature compensation | - | No |
| Repair mode | - | Yes |
| Power supply mode | - | Yes |
| Build | ||
| Ingress rating | - | IP66 |
| Weight | - | 2.9 lb |
| Warranty | 5 years | 3 years |
| Released | 2020-06-01 | 2026-08 |