Free Shipping Available!


Mon-Fri 9am-5pm Eastern

ECOTRIC Replacement Battery for 26" Fat Tire Electric Bike

✓ #1 Authorized ECOTRIC Retailer
✓ Lowest Price Guaranteed!
FAST & FREE Shipping
Delivery: 5-7 Business Days
✓ Questions? Contact an ECOTRIC Expert: 1-877-347-52831-877-347-5283

Your Price:

Checkout Secure
Checkout Secure

ECOTRIC Replacement Battery for the 26" Fat Tire Electric Bike - Old Version

About the ECOTRIC Replacement Battery for the 26" Fat Tire Electric Bike

The FAT26S900 36v 12AH Battery is a replacement battery for the FAT26S900 Fat tire bike only. This is the older version that fits bikes from prior to 2020. 

Product Specifications

  • Battery Capacity: 36V/12Ah
  • Expected Range: 35 miles p/charge
  • Battery Cells: Lithium-ion

Shipping & Delivery

  • Free shipping on all orders.
  • Ships from Oakland, CA, using courier (FedEx/UPS/USPS).
  • Shipping Cost We offer free shipping on all of our bikes everywhere within the lower 48 states
  • Bikes are shipped 95% assembled. When you receive your bike, you just need to attach the front wheel, set up the handlebars and screw in the pedals, and you’re done.


  • Standard Warranty Included.
  • Please see the products warranty options at purchase. For any further warranty questions please contact a member of staff.

Refund & Return Policy

  • All ECOTRIC accessories have a 50% restocking fee.

    Added to cart!
    FAST & FREE Shipping Available! | Authorized Dealer Secure Checkout FREE Shipping on all USA Orders. Offer ends in You Have Achieved Free Shipping All orders are processed the following business day and with Free Shipping on all orders. Free Shipping Available! XX