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Quick starts, rugged build, zero fuss. The Duracell Ultra Car Battery Group 121R | 550CCA delivers trusted starting power and long-lasting performance for everyday drivers, even in tough weather conditions.
About This Item
550CCA flooded battery—reliable 12V power for Group 121R cars and trucks
Replaces Group 121R; delivers solid starts and performance year-round
Built by America's most trusted battery brand using advanced plate design
Free battery testing at Batteries Plus—most car batteries last 3–5 years, so check regularly to avoid breakdowns and ensure reliable starts year-round.
Premier Installation protects terminals and helps extend battery life
Fast install available; includes a 2-year free replacement limited warranty
Product Specifications
| Item Number | SLI121R |
|---|---|
| Brand | Duracell Ultra |
| Format | BCI Group 121R |
| Cold Cranking Amps | 580 |
| Terminal Type | SAE, Automotive Post |
| Capacity | 40Ah |
| Voltage | 12 |
| Lead Acid Type | Starting |
| Reserve Capacity Minutes | 80 |
| Product Sub Category | Flooded |
| Positive Terminal Placement | Right |
| Product Category | Auto/Light Truck |
| Maintenance Free | Yes |
| Chemistry | Lead Acid |
| Battery Type | Basic |
| Lead Acid Design | Flooded |
| Warranty | 24 Month Free Replacement |
| Cranking Amps | 715 |
| Weight | 30.4 lbs |
| Length | 8.25 in |
| Width | 6.938 in |
| Height | 8.125 in |