SRAM AXS USB-C Replacement Battery — 500mAh battery cells Spare Power for Long Rides

500mAh higher-capacity backup power for SRAM AXS-style removable battery systems. Compared with a 300mAh original battery, the ALLTOO 500mAh USB-C replacement battery offers about 67% more rated capacity to help extend ride time between charges. Actual runtime depends on riding conditions, temperature, shifting frequency, and component setup.

• USB-C direct charging: charge from a wall adapter, power bank, car USB port, or travel charger.
• 500mAh capacity vs 300mAh original: about 67% more rated capacity for longer backup runtime between charges.
• 4-level LED indicator: check charge level before you roll out.
• Tool-free swap: slide out the old battery, click this one in, and ride.

Best for

• Riders who want a charged spare in a saddle bag, tool roll, or travel case.
• Road, gravel, MTB, and bikepacking riders using SRAM AXS-style removable batteries.
• Race weekends or trips where carrying one USB-C cable is easier than packing an extra charging dock.
• 1x riders who cannot swap a front derailleur battery to the rear derailleur during a ride.

Compatibility

How to check fit before ordering

• Search intent fit: this product is for riders looking for a SRAM AXS battery replacement, SRAM eTap AXS spare battery, or USB-C rechargeable AXS-style backup battery.
• Physical fit matters most: match the latch position, connector pads, and removable battery shell shown in the photos.
• Do not force the battery into the derailleur or seatpost. A correct fit should click in cleanly.

Why riders use it

AXS batteries are small, easy to misplace, and easy to leave on the charger at home. A 500mAh USB-C rechargeable spare gives you a simple higher-capacity backup: keep one charged in your kit so your electronic shifting is ready when the ride starts.

Charging and indicator

• Charge directly with a USB-C cable and a compatible 5V power source.
• Use the LED indicator to check remaining power before packing it.
• Also works as a backup battery alongside your original SRAM AXS battery setup.

Trust and support

• Clear aftermarket positioning: this is an ALLTOO replacement battery, not an original SRAM battery.
• 30-day money-back guarantee: return it if it does not fit your setup as expected.
• Free worldwide shipping: available directly from alltoo&GodLOL Cycling Tour.
• Secure checkout: paid through Shopify Payments.

Recommended kit

For travel or longer rides, carry one charged spare battery, a short USB-C cable, and a small protective case or battery cover to keep contacts clean inside your bag.

What's in the box

• 1 x ALLTOO 500mAh battery cells USB-C replacement battery for SRAM AXS-style systems

FAQ

Is this an original SRAM battery?

No. This is an ALLTOO aftermarket replacement battery designed for SRAM AXS-style removable battery systems.

Does it fit SRAM AXS road and Eagle AXS?

It fits only AXS-style removable battery systems that match the battery shape, latch, and connector shown in the product photos. It is not compatible with UDH under-hanger battery layouts. Always compare your original battery before ordering.

Can I charge it without the original SRAM charger?

Yes. The built-in USB-C port lets you charge it with a standard USB-C cable and a compatible 5V power source.

Is it good for travel?

Yes. It is compact and useful as a spare battery for road trips, gravel events, races, and multi-day rides.

Will using an aftermarket battery affect SRAM warranty coverage?

This is an aftermarket battery, so warranty decisions for SRAM components are controlled by SRAM and its service partners. If warranty coverage is a concern, use this as a backup battery and check SRAM's current warranty terms before relying on any aftermarket part.