Our most popular battery for Harley-Davidson Motorcycle riders
Free Standard Shipping
Order today and receive free standard shipping on your Big Crank ETX30L Battery. Only valid in the continental 48 states and not valid with any other offer. Physical address required (No PO Boxes).
Big Crank Batteries: The most advanced power and value in the industry.
Premium quality absorbed glass mat technology (AGM) is ideal for ATVs, motorcycles, personal watercraft, & snowmobiles.
Completely spillproof and leakproof; frequent replacement and high maintenance are over!
The Big Crank battery's terminals provide versatility, increased strength and durability.
Over 1000 customers have submitted reviews about ETX30L. The 5 most common comments are--
"So glad I didn't buy at the dealership. This battery performs better than original and costs half as much." "I'm really happy this was Made in the USA." "I received the battery faster than I expected." "It's the first time I bought a battery let alone online. I can't tell u how happy I am with the battery, service and the delivery" "Free Shipping!"
Note: Please check dimensions and terminal configuration to ensure this is the proper battery for your application.
Tech Tip: Easy Side 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 side 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 Side Mount Looks when Installed: With the spacer, there is a flat, flush connection between the battery terminal and the cable. This connection will ensure you receive full cranking power.
The Big Crank ETX30L Battery has been cross-referenced to be compatible and replace these OEM part numbers and models:
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