Marathon S46B24R 12V AGM Auxiliary Battery - Direct Fit for Toyota Prius 2004-2018
Item #: MAR-9A51P   |    In Stock - Fast shipping from our US warehouse!

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Marathon S46B24R 12V AGM Auxiliary Battery - Direct Fit for Toyota Prius 2004-2018

Item #: MAR-9A51P   |  In Stock - Fast shipping from our US warehouse!

Reg. Price: $189.95
SALE Price: $179.95
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Reg. Price: $189.95
SALE Price: $179.95


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Product Specifications for Marathon S46B24R 12V AGM Auxiliary Battery - Direct Fit for Toyota Prius 2004-2018

Specifications:
BM Part #: MAR-9A51P
Battery Polarity: Left Positive Terminals
Voltage: 12 Volt
Cold Cranking Amps: 370 CCA
Capacity: 45 Ah
Type: AGM
Battery Size: S46B24R
Length: 9 3/16"
Width: 5"
Height: 7 3/4"
Terminal Height: 9"
Shipping Weight: 30.00Lbs
Warranty: 1 Year
Features:
  • Exact OEM Fit: Easy installation & fitment; features the same case & cover layout as the original Prius battery.
  • Compatibility: This replacement S46B24R Prius 12v battery is compatible with these Prius applications:
    • 2004 - 2009 1.5L with Smart Key
    • 2010 - 2015 1.8L Hybrid
    • 2012 - 2018 Prius V
  • Vibration Resistance: Provides added power for resistance against hard-hitting stereo, competitive racing, or off-road wear and tear vibration.
  • Enhanced Power Output: 370 Cold Cranking Amps (CCA) and 45Ah capacity deliver strong starts and consistent performance for vehicles with upgraded audio, navigation, or electrical systems.
  • Sealed AGM Design: Maintenance-free, spillproof, and leakproof. Perfect for hybrid vehicles and environmentally sensitive areas like the cabin or trunk.
  • Integrated Vent Port: Side vent hole allows proper gas expulsion with included vent tubing, maintaining safety and battery longevity.
  • Made in Korea: Engineered with precision and built to high manufacturing standards, providing long service life and reliable quality.

Product Description

Free Standard Shipping!

Order today and get free standard shipping on your Marathon S46B24R 12V AGM Auxiliary Battery - Direct Fit for Toyota Prius 2004-2018. This offer is valid for the contiguous 48 states and requires a physical address for delivery.

Direct Replacement S46B24R AGM Auxiliary Battery for Toyota Prius

The S46B24R AGM battery is the guaranteed direct-fit 12V auxiliary battery replacement for all 2004-2018 Toyota Prius models (including Gen 2 and Gen 3). It delivers reliable power with sealed AGM performance and long-lasting durability—perfect for daily driving, upgraded electronics, and demanding conditions.

Whether you're replacing a failing factory battery or upgrading for added performance, the S46B24R AGM battery offers trusted power, worry-free maintenance, and a factory-perfect fit. Order today and keep your Prius running at its best.

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Frequently Asked Questions

Q: Will this battery fit my Toyota Prius?

A: Yes! This S46B24R battery is a direct-fit replacement for the following models:

  • 2004–2009 Prius 1.5L with Smart Key
  • 2010–2015 Prius 1.8L Hybrid
  • 2012–2018 Prius V

If you're unsure, feel free to contact us with your VIN—we're happy to help confirm compatibility.

Q: What makes AGM batteries better?

A: AGM (Absorbent Glass Mat) batteries offer better performance, longer lifespan, and higher vibration resistance than standard flooded batteries. They're sealed, leakproof, and maintenance-free, making them ideal for modern vehicles and electronics.

Q: Is the S46B24R battery good for upgraded sound systems or added electronics?

A: Definitely. With its Cold Cranking Amps (CCA) rating and reserve capacity, this battery is designed to handle extra power demands like aftermarket stereos, dash cams, or lighting upgrades.

Q: How long will this battery last?

A: On average, AGM batteries last 4 to 6 years, depending on driving habits, climate, and vehicle usage. They also recharge faster and hold power better during periods of non-use.

Q: Is installation simple?

A: Yes! The S46B24R AGM battery is an exact fit for the compatible Prius models listed below. Most customers can install it in under 15 minutes with basic tools.

Q: Do you offer a warranty?

A: Yes. The S46B24R Prius battery includes a 1 year limited warranty against defects in materials and workmanship.

Q: What is your return policy?

A: We offer a 60-day return window on unused batteries in original packaging. If there's any issue with your order, our support team is here to help make it right.

Cross Reference & Compatibility

The Marathon S46B24R 12V AGM Auxiliary Battery - Direct Fit for Toyota Prius 2004-2018 has been cross-referenced to be compatible with or replace these OEM part numbers and models:
00544-21171-325
00544-21171-LEX
28800-21171
28800-21180
46B24R
46B24R-AGM
8171-767
9A51P
AGM B24
DS46B24R
HJ-S46B24R
MTX-S46B24R
S46B24R
S46B24R-T3
OEM
  • AAA 6515-C
  • Ace Hardware 9A51P
  • Alliance Truck Parts ABP A9A51P
  • Astrolite AGM51P-1
  • Autocraft NG51P
  • AutoZone 46B24R-AGM-325
  • Batteries Plus SLI51PAGM
  • Bosch S6535B
  • Canadian Tire ELI-S46B24R
  • Canadian Tire Retail ELU-S46B24R
  • Carquest NG51P
  • Deka 9A51P
  • Delphi BU9051P
  • Diehard 50346
  • Diehard 5392996
  • Diehard NG51P
  • Duracell 9A51P
  • Duracell AGM51P
  • Duracell SLI51PAGM
  • Everstart AGM S46B24R
  • Exide FP-AGM51JIS
  • Factory Motor Parts AGM51P-1
  • Federated AP51P
  • Federated CO-OP 9A51P
  • Ferguson AGM51P-1
  • Fisher AP51P
  • HD Plus 9A51P
  • Interstate MTX-S46B24R
  • Magna Power MPA-S46B24R
  • Mayasa AMP-AP51P
  • Mighty 51PAGM
  • MotoMaster ELU-S46B24R
  • NAPA 51-9AGM
  • NAPA 9851P
  • NAPA Canada 51-9AGM
  • NAPA Export 9851PEX
  • Parts Master AP51P
  • Parts Plus AP51P
  • Perfect Start PRIUS
  • PRO-SERIES MPA-S46B24R
  • SuperStart PRIUS
  • TruckPro DB9A51P
  • Valvoline 6515-V
  • World Source One (WSO) 51PAGM
  • Yuasa S46B24R

This battery can be used in these models:

Car & Automotive
  • 2011-17 Lexus CT200H (L4-1.8L)
  • 2016-18 Toyota Mirai
  • 2004-09 Toyota Prius (L4-1.5L)
  • 2010-15 Toyota Prius (L4-1.8L)
  • 2012-15 Totoya Prius Plug-in (L4-1.8L)
  • 2012-18 Toyota Prius V (L4-1.8L)
  • 2018 Toyota RAV4 Full Hybrid (L4-2.5L w/o Premium Sound System)

Customer Reviews

30 Reviews | 5.0 out of 5
5 stars (29)
4 stars (1)
3 stars (0)
2 stars (0)
1 star (0)
100%
Would recommend this product.
What our Customers are saying
The Best Toyota Prius Battery Ever
January 1, 2025
by on January 1, 2025

Toyota Prius requires an expensive AGM Aux battery, which is over $200 in auto stores like AutoZone, OReillys, etc. But this product in Battery Mart makes it a lot more affordable. It is able to achieve the same performance for a much cheaper price. I installed the battery right after I got it and it works well so far. I highly recommend it to Prius users.

Zhilong Liu
CA
Would recommend to a friend?
Yes
Quality in Battery not on the label
December 30, 2024
by on December 30, 2024

The battery is outstanding. Glad the quality is in the battery not on a fancy label!

Chris G
Texas
Would recommend to a friend?
Yes
Battery for a 2014 Lexus CT200H
December 29, 2024
by on December 29, 2024

The battery arrived in great shape and,tested new. Very happy with the service and, shipping.

radiojoe
Leland N,C.
Would recommend to a friend?
Yes
Marathon S46B24R AGM
December 17, 2024
by on December 17, 2024

The website was easy to navigate, and finding the right battery for my car was straightforward. Shipping was on time, exactly as promised, which was a huge plus. The packaging was excellent—sturdy and secure—ensuring the battery arrived in perfect condition.
Overall, BatteryMart.com delivered a seamless and reliable experience. I would highly recommend it to anyone looking for quality products and dependable service!

JP
Would recommend to a friend?
Yes
Perfect Replacement for Prius 12V
November 12, 2024
by on November 12, 2024

I highly recommend this battery as a near identical replacement for the odd size, hard to find Prius Gen-2 12V Auxiliary Battery. This has the exact size dimensions and electrical capacity of the OEM battery. I also recommend Battery Mart as the supplier. They packaged this in a second larger box with plenty of padding to prevent damage. The purchase online was easy and delivery by FedEx was flawless.

GraniteJim
FL
Would recommend to a friend?
Yes
Just in time
October 25, 2024
by on October 25, 2024

I was having difficulty finding a replacement 12v battery for my prius. BatteryMart had the exact replacement and was able to ship the next day.

Mike
Georgia
Would recommend to a friend?
Yes
Awesome
October 11, 2024
by on October 11, 2024

Found the best deal online, way cheaper than going to auto parts store and shipping was so fast! Highly recommend and will use them again.

Brooke
California
Would recommend to a friend?
Yes