Duralast Platinum AGM Battery 51R / Group Size SAE - Type A 51R-AGM
Part #
51R-AGM
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Regular Price
Total price is: 259 dollars and 99 cents..
Refundable Core Charge
+$22.00
Regular Price Plus Core
$281.99
quantity
Specifications:
Warranty:
Part Number:
SKU Number:
Battery Technology:
Features:
- Precision engineered to exceed OE specifications
- Superior starting power for all climates
- Vehicles with startstop & high electrical demand
- 2 times the life of conventional batteries
- Vibration resistance with SPILL-PROOF, AGM design
| Warranty | |
|---|---|
| Part # | 51R-AGM |
| SKU # | 229893 |
| Battery Technology | Absorbed Glass Mat (AGM) |
| Weight | 29.4lb |
| Height | 8.75in |
| BCI Group Size | 51R |
| Reserve Capacity | 45min |
| Cranking Amperage | 540A |
| Voltage | 12VDC |
| Terminal Type | SAE - Type A |
| Battery Type | Automotive |
| Negative Terminal Location | Top Left Front |
| Width | 5.06in |
| Length | 9.38in |
| Cold Cranking Amperage | 435A |
| Positive Terminal Location | Top Right Front |
| Product Bulletins |
Duralast Platinum AGM (Absorbent Glass Mat) Batteries are designed to give you the ultimate combination of power, durability, and flexibility. These batteries are engineered to meet or exceed the performance of your original AGM battery. Delivering maximum cold cranking amps and reserve capacity, Duralast Platinum AGM batteries provide increased, spill-proof power to vehicles with multiple electronic features and accessories like cruise control, lane assist, infotainment systems, and heated seats. In vehicles designed for AGM Automotive batteries, Duralast Platinum AGM Batteries meet or exceed your original equipment for premium performance and are backed by a 4-year, free replacement, nationwide warranty.
- 2x times the cycle life of conventional batteries
- Leak proof and certified non-spillable design for safer maintenance-free power
- Cycles more and recharges faster than conventional batteries
- Advanced technology specially designed for vehicles with start-stop technology and accessories that demand greater power
- Constructed for greater vibration resistance and enhanced durability
- Delivers superior starting power in cold weather and resists internal corrosion from heat
From the Brand

Vehicle Type | Modern vehicles with start-stop technology and/or high electrical demands | Modern vehicles with high electrical demands | Conventional vehicles with standard to high electrical demands | Conventional vehicles with standard electrical demands |
Free Installation | Yes | Yes | Yes | Yes |
Starting Power | Superior | Superior | Improved | Standard |
Extreme Temperature Performance | Elite | Superior | Improved | Standard |
Vibration Resistance | Elite | Superior | Improved | Standard |
Power for Features and Accessories | Elite | Superior | Improved | Standard |
Cycle Life | Elite | Superior | Standard | Standard |
Lifespan | 3x | 2x | 1x | 1x |
Maintenance Free | Yes | Yes | Yes | Yes |
Replacement Warranty | 5 Years | 4 Years | 3 Years | 2 Years |
Original Equipment (OE) Comparison | Recommended replacement for vehicles with advanced electronics | Recommended replacement for vehicles with advanced electronics | Meets and/or exceeds OE quality | OE-matched quality |
KNOWLEDGE IS POWER
Most car batteries last 3-5 years. If your battery is 4 years old or older, it is at higher risk for failure. One out of every four vehicles on the road will likely need a new battery this year.
Cold cranking amps measures your battery's ability to start an engine. The specific measurement is the amount of amps delivered over 30 seconds at 0°F. High cold cranking amps give you a rough indication of a battery's starting power in difficult conditions.
Reserve capacity refers to the amount of time (in minutes) a battery can provide power before being fully discharged. High reserve capacity is especially important for modern vehicles with accessories like heated seats and infotainment systems.
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583 Ratings
92% of reviewers recommend this product.
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Review Summary
The Duralast batteries provide reliable performance and long-lasting power. Customers praised the quick start-up and smooth operation of the batteries. While some noted the higher price, most felt the quality and warranty justified the cost.
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373 Reviews
Needed for subwoofers
Devon2 days agoVerified Purchasewhen I first got my car it went over my head about the battery and blew the amps out of the battery, when I put this AGM battery in and immediately started maxing the subwoofers it has yet to disappoint me.Helpful?
- MARK3 days agoVerified PurchaseSo far so good. Time will tell. The staff was great and got to me quickly and was very knowledgeable. Will use this location again.
Helpful?
- MICHAEL3 days agoVerified PurchaseRecommendedGreat Battery replacementPurchased for: 2019 Honda Civic
Helpful?
Fits my car
Dave B3 days agoVerified PurchaseHave no idea how it will respond to hot desert conditionsPurchased for: 2019 Honda HR-VHelpful?
They can’t even get a order right
Got someone elses order4 days agoVerified PurchaseNever got the correct orderHelpful?
- Anonymous8 days agoVerified PurchaseGreat replacement battery for 2011 Honda CRV. The 4 year warranty is the best I could find. Store replaced free. Could not be happier.
Helpful?
Excellent
Auto8 days agoVerified PurchaseStrong lasting batteryHelpful?
Duralast platinum battery
Abraham9 days agoVerified PurchaseRecommendedVery good battery 4 years warrantyPurchased for: 2008 honda crvHelpful?
Battery
MARICELA9 days agoVerified PurchaseRecommendedCar is running smoothly and when I turn on my car it immediately takes. Good biyPurchased for: 2017 Honda AccordHelpful?
- JIM9 days agoVerified PurchasePerfect replacement. Great staff
Helpful?
- ROBERT9 days agoVerified Purchasegood battery. easy install(they did it for me). even added the grease.Purchased for: 2008 Mazda MX-5 Miata
Helpful?
OEM perfect fit
FloppyHoppy10 days agoVerified PurchaseSo far so good. It's only been about two weeks but it works fine, fits perfectly and hopefully lasts for years.Purchased for: 2019 Honda CivicHelpful?
- RON13 days agoVerified PurchaseRecommendedThis is a very good product.Purchased for: 2003 Honda Civic
Helpful?
Great service, Best battery with longest warranty
Aubree F.17 days agoVerified PurchaseRecommendedThe gentleman who assisted me by replacing and installed my battery for me used this item and did a fantastic job. I would not have been able to this on my own so I cannot tell you enough how thankful I am for his kindness, and speed of service even with having 2 people ahead of me. He was awesome! Thank you!Purchased for: 2019 Honda civicHelpful?
Replacement battery
PAUL22 days agoVerified PurchasePricy. Very easy install. Engine cranked on first turn. If it lasts for five years with no issues, I’ll give it a five!Purchased for: 2012 Mazda MX-5 MiataHelpful?
- VANESSA23 days agoVerified PurchaseCompletely died 9 months later, there was no way for me to get it back to the store for a replacement, warranty was useless.Purchased for: 2006 Honda Truck CR-V 4WD 2.4L FI DOHC 4cyl
Helpful?
Died after a few months
S.r24 days agoVerified Purchase💩🪦 died on me. I do not recommend this product unfortunately I’m going to rock the replacement since I’ll be getting it for free but down the road it behoves you get something reliable.Purchased for: 2005 Acura RSX Type-S 2.0L MFI DOHC VTEC 4cylHelpful?
Poor
Sunny24 days agoVerified PurchaseBattery didn't last for a long timePurchased for: 2014 Honda civicHelpful?
New AGM battery
Spdtech27 days agoVerified PurchaseRecommendedWorks great and I can notice the additional cold cranking amps.Purchased for: Acura TSXHelpful?
Warranty issues
VICTOR28 days agoVerified PurchaseGave me a hard time giving me a new battery even though I have warranty. The clerk told me because autozone could not see the original purchase price of the battery I bought with warranty, therefore, they could not replace it with a new battery. I was sent to another location where there was a manager that could help me. Thank you to the night shift manager at 9457 Foothill Blvd in Rancho for finally helping me after hours of dealing with that.Purchased for: 2019 Honda HR-VHelpful?
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