
Product Specifications for USA-Made Big Crank™ ETX9 Battery
BM Part #: | ETX-9 |
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Made In: | U.S.A. |
Battery Polarity: |
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Voltage: | 12 Volt |
Capacity: | 8 Ah |
Type: | AGM |
Length: | 5.88" |
Width: | 3.44" |
Height: | 4.19" |
Cold Cranking Amps: | 120 CCA |
Shipping Weight: | 7.00Lbs |
Warranty: | 1 Year Pro-rated |
- Made in the USA. Why it matters:
- Superior craftmanship; rigorously tested; high-quality parts.
- Ships fully charged and ready to install!
- Sealed, Maintenance-Free Design; Vibration Resistant Leakproof, and Spillproof.
- Environmentally friendly, 100% recyclable.
- New bolts included in every package. Also, includes brass spacers necessary for side mount cable installation.
- Replaces: 31500-156-001, B109, BRL-B109, CTX9-BS, ES9BS, GTX9-BS, M329BS, M429BS, PTX9-BS, XTAX9-BS, YTX9-BS, YTX9, YTX-9 (See More)
Product Description

You've just discovered a best seller.
Want to know a secret?
The Big Crank ETX9 battery offers the most advanced power and value in the industry, and is ideal for ATVs/UTVs, motorcycles, personal watercraft, and snowmobiles.
Our competitors are so jealous of our American made Big Crank motorcycle batteries that they list "Replacement for Big Crank" and try to substitute an inferior grade imported substitute. Be wary of cheap knockoffs, ONLY batterymart.com carries the wildly popular BIG CRANK ETX9.
The Big Crank ETX9 Battery has become extremely popular because of the value it provides. With its spillproof and leakproof design, this is not a battery that will need to be replaced frequently, or require high-level maintenance. The Big Crank Battery's terminals are versatile, with increased strength and durability. Our customers also love the ease of installing this battery. But don't take our word for it! Check out over 50 customer reviews! Many of our customers tell us this battery has lasted them better than half a decade, which is why we're not afraid to guarantee your satisfaction, 100%. Battery Mart will refund the purchase price of your battery if it fails to meet your expectations in any way.
So what makes this battery so popular? Features:


- Sealed, Maintenance-Free
- Leakproof/Spillproof
- Ships fully charged and ready to install
- Environmentally friendly, 100% recyclable
- Vibration Resistant Design
- Made in the USA
- New bolts included
These Big Crank motorcycle batteries are made in the USA. Just think; if every American spent at least $64 on something made in America, we could create 200,000 jobs right now!
Dealers sell the ETX9 for $110.99 and more. We buy ETX9 direct from the manufacturer, and pass the savings directly to our customers- no middleman!
Order today and receive free standard shipping on your USA-Made Big Crank Battery.
Tech Tip: Easy Front Mount Installations
This battery is supplied with unique terminal hardware (2 spacers and 2 bolts for cable to terminal connection). This hardware is required for proper installation on certain applications. Other hardware may damage terminals and should not be used. The spacers are required for front mount cable installation only! The top mount position does not require the round spacers, use supplied bolts only. Torque bolts to 6 to 8 ft. lbs. How A Front Mount Looks when Installed: |
Cross Reference
Customer Reviews
The battery fit fine into the cradle, but the cables that come with the bike have bends at the end of them so they cradle into the slots of the original battery. I had to bend those flat to fit this battery. Everything else seems to be fine. The original lasted 5 years, so hoping this American made one might do the same.
This is The second Big Crank battery I have bought for my 2001 Honda Shadow VLX. The first one bought in November 13, 2012. I never let it go for more than a month in the Winter without it on a trickle charger.
I bought one of these in 2013 and installed in my 2007 DR650. Sadly, after just over 8 years it was starting to fail. I kept it on a Battery Tender when not riding, sometimes for months. I am very impressed with this battery, you will be too. Definitely money well spent.
You get what you pay for.
This is the second battery I’ve purchased from BatteryMart for this Bike the first one in 2012 it’s now 2020. Don’t think I have to add anything else to that statement!!! Great price fast delivery. Highly recommend.
Exactly the same size and the exact same terminals as the stock BMW battery on my S1000XR. BMW battery is over $150. I would recommend this battery. The one year warranty is a bonus.
Battery connectors are different on the original battery. Works but not really a plug and play sort of comparability with 07 GSXR 600