YT4B-BS AGM Maintenance Free Battery
Item #: YT4B-BS   |    Backordered: Available October 10th, 2023

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YT4B-BS AGM Maintenance Free Battery

Item #: YT4B-BS   |  Backordered: Available October 10th, 2023

Reg. Price: $49.95
SALE Price: $41.95
Free Shipping! Free Shipping

Price: $41.95

Best Value
Free 2-Day Shipping
1 Year Pro-rated Warranty
Brand New
100% Compatibility
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Product Specifications for YT4B-BS AGM Maintenance Free Battery

BM Part #: YT4B-BS
Voltage: 12 Volt
Capacity: 2.3 Ah
Type: AGM
Length: 4.45"
Width: 1.5"
Height: 3.35"
Cold Cranking Amps: 30 CCA
Shipping Weight: 4.00Lbs
Warranty: 1 Year Pro-rated
  Little known fact:  
Replacement batteries and accessories have the comparable performance standards as OEM batteries but are significantly cheaper. Why? Simply carrying a brand name on a product makes it more expensive. Smart shoppers don't fall for that.
Frequently Bought Together:
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YT4B-BS AGM Maintenance Free Battery
YT4B-BS AGM Maintenance Free Battery
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Total for Both Items: $101.90

Product Description

Free Standard Shipping!

Order today and receive free standard shipping on your YT4B-BS AGM Maintenance Free Battery. Only valid in the contiguous 48 states and not valid with any other offer.

This AGM battery is sealed to be maintenance-free, leakproof and spillproof. Ships fully charged and ready to install right out of the box. This AGM battery features a vibration resistant design for extended battery life. This AGM battery is environmentally friendly, it is 100% recyclable.

Popular Battery for Chinese ATV's & Scooter

  • 12 Volts
  • CCA: 30 @ 0°F
  • 2.3 Amp Hour @10 hr rate


  • Sealed, Maintenance-Free
  • Leakproof/Spillproof
  • Ships fully charged ready to install
  • Environmentally friendly, 100% recyclable
  • Vibration Resistant Design
  • Fully Charged out of the box
  • F2 terminals - 1/4" (0.25", 6.35mm) wide

*Picture is an approximate representation of the item. Color and brand may vary.

Note: Please check dimensions and terminal configuration to ensure this is the proper battery for your application.

Off-Season Maintenance:

We recommend the below charger to maintain this battery when it is not in use.

YT4B-BS Terminal

Replaces these Yamaha Part Number Variations:

4JS-82100-01-00, 4JS 82100 01 00, 4JS821000100, 4JS82 1000100, 4JS821 000100, 4J S8210 00100, 4JS8 2100 0100, 4JS 821 000 100, 4J S8 21 00 01 00

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Cross Reference

The YT4B-BS AGM Maintenance Free Battery has been cross-referenced to be compatible with or replace these OEM part numbers and models:

Customer Reviews

114 Reviews | 4.8 out of 5
5 stars (94)
4 stars (20)
3 stars (0)
2 stars (0)
1 star (0)
Would recommend this product.
What our Customers are saying
Easy as can be!
August 18, 2023
by on August 18, 2023

The battery I was looking for was easy to search and order on the website and it arrived very quickly. It was a perfect match for the one I was replacing. I would highly recommend this site.

Would recommend to a friend?
did the job
Apr37l 24, 2023
by on Apr37l 24, 2023

For sentimental reasons I bought a "retro" 400cc Yamaha SR400, with a KICK STARTER. At 70 years old that may not have been such a good idea. The bike had been sitting on the showroom floor for years, and the OEM battery claimed 20 cranking amps. It was always a challenge to start, but it'd gotten to the point where I often wondered if was stranded. "Pop the clutch?" There are NO hills or grades on coastal Georgia, so that wasn't an option.
The NEW $30 battery claimed 30 cranking amps. The $100 Interstate battery claims 40. Since installing the new battery I've never had to kick it more than twice, usually once.
It arrived in days loaded & I assume charged. I put it on my charger and the gauge didn't budge in a hour. I'm a happy customer.

Brunswick, Georgia
Would recommend to a friend?
Perfect Fit - Arrived Pre-Charged and Ready to Install
October 1, 2021
by on October 1, 2021

This was a direct drop-in replacement on a 2004 Yamaha TTR-90E pit bike. Cranks strong right out of the box.

Would recommend to a friend?
Yt4b-bs agm battery
August 13, 2021
by on August 13, 2021

Fit my 2021 suzuki drz 50 perfect. Fires up every time. Great price much cheaper than factory replacement. Time will tell how well it holds up

Would recommend to a friend?
Big Punch. For Little Battery
July 6, 2019
by on July 6, 2019

Good Investment. already charged just install it and everything was all go.

Golden Valley,AZ
Would recommend to a friend?
prompt service
July 17, 2016
by on July 17, 2016

I've ordered motorcycle batteries from Battery Mart several other times and have always received the correct battery and in a excellent shape.

abby dabby
Would recommend to a friend?
great price
July 3, 2016
by on July 3, 2016

Very satisfied with the battery ! Received it in two days!

pittsburgh pa.
Would recommend to a friend?