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
prius auxiliary battery order
February 22, 2025
by on February 22, 2025

the battery was delivered quickly and works great!

none
Would recommend to a friend?
Yes
battery
February 18, 2025
by on February 18, 2025

works great paid less than I would have also

case
MI
Would recommend to a friend?
Yes
2015 Prius
January 26, 2025
by on January 26, 2025

Perfect fit, easy to install, good price! The reviews here helped made my decision to the purchase, and thanks battery Mart for the good price and the fast delivery!

BW
WA
Would recommend to a friend?
Yes
Excellent option for 09 Prius
January 18, 2025
by on January 18, 2025

Packaged well, delivered on time, excellent fit and a good price. Would highly recommend. Price was better than any local options.

James
Iowa
Would recommend to a friend?
Yes
Exact Correct Battery for the make, model and year I entered in their website
January 10, 2025
by on January 10, 2025

I was looking for a battery for a Prius 2010 and the close-up pictures in the Battery Mart website gave me confidence that the right battery would arrive. Yes, the correct battery arrived in just a day or two! The battery was easy to install (see videos online); all you need is one wrench. After putting the battery in the car and connecting it the car started right up, no problems. The battery was shipped to me in protective thick, sturdy cardboard. I left the car for days to go away for Christmas and the battery was quite cold while I was gone and....when I tried to start the car, amazing, it started right up after having been left not being charged for several days. You can pay about $130 more and have a pro install a battery or you can d.i.y. and save something like $130.

GreenEyesMuscularThighs
Connecticut
Would recommend to a friend?
Yes
Great
January 8, 2025
by on January 8, 2025

I purchased a batter, received on time, and it work great,

MNS
Would recommend to a friend?
Yes
Marathon S46B24R AGM
January 4, 2025
by on January 4, 2025

great price, at my door in less than 20 hrs, exact fit even the vent port!
Happily motoring with the 2015 again

brian
Would recommend to a friend?
Yes