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
3.7/5
A rugged 15 A charger for drivers and boaters who want fast charging, lithium support and a service mode in one weatherproof unit.
- 15 ACharge current
- 6/12 VVoltage
- YesLithium mode
- 3 yearsWarranty
Check price at Amazon$109.99
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 15 A recharges a flat car or truck battery in a few hours
- Service mode holds 13.6 V so the car keeps its settings during a battery swap
- IP66 case and mounting screws let you fix it to a garage wall or boat
- Charges LiFePO4 as well as lead acid, with a 3 year warranty
Cons
- No temperature compensation
- Costs more than the older SC1280 with the same 15 A rate
The Schumacher Rugged family
Every Schumacher Rugged model we rank, smallest first. Ratings compare each against its own current.
| Model | Charge current | Rating | Price |
|---|---|---|---|
| Schumacher Rugged SC1682 | 5 A | 4.0/5 | $59.99 |
| Schumacher Rugged SC1684 | 10 A | 3.4/5 | $80.99 |
| Schumacher Rugged SC1685 (this one) | 15 A | 3.7/5 | $109.99 |
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 | SC1685 |
|---|---|
| Charging | |
| Charge current | 15 A |
| Voltage | 6/12 V |
| Lithium mode | Yes |
| AGM mode | No |
| Temperature compensation | No |
| Repair mode | Yes |
| Power supply mode | Yes |
| Build | |
| Ingress rating | IP66 |
| Weight | 2.9 lb |
| Warranty | 3 years |
| Released | 2026-08 |
Alternatives in this current
NOCO GENIUSPRO50
#4 in Over 5 AFull review
For dealerships, fleet shops and owners of large battery banks who need maximum charge current and a heavy duty programming supply. Everyone else is better served by a 10 or 25 A charger.
Amazon $899.95$899.95
Victron Blue Smart IP65 12/10
#6 in Over 5 AFull review
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 $152.15$152.15
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