300mAh USB-C Battery for SRAM AXS / eTap – Carbon Fiber
300mAh USB-C Battery for SRAM AXS / eTap – Carbon Fiber
300mAh USB-C Battery for SRAM AXS / eTap – Carbon Fiber
300mAh USB-C Battery for SRAM AXS / eTap – Carbon Fiber

300mAh USB-C Battery for SRAM AXS / eTap – Carbon Fiber

$139.99
Carbon Finish:3K Carbon Weave
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Direct USB-C Charging. One Less Charger to Pack.

Make charging your electronic shifting battery more convenient. This 300mAh aftermarket replacement battery combines a carbon fiber housing with an integrated USB-C charging port, making it a practical option for everyday riding and cycling trips.

Connect a compatible power source and charging cable directly to the battery. No separate battery charging cradle is needed when using the USB-C port.

300mAh Rated Capacity

The battery is labelled 300mAh, 7.4V and 2.22Wh. Use it as a replacement or spare battery for your compatible SRAM AXS / eTap derailleur.

Actual runtime depends on shifting frequency, temperature, battery condition and the component in use.

Choose Your Carbon Finish

Available in two exterior finishes:

• 3K Carbon Weave — a classic, regular woven pattern.
• Forged Carbon Pattern — a distinctive, irregular carbon appearance.

The precise carbon pattern may vary between individual batteries.

Approximately 20.5g Reference Weight

The pictured 300mAh sample shows approximately 20.5g on the scale. Actual weight may vary slightly by finish and production tolerances.

PD / QC Power Source Support

According to the supplier, the charging system supports compatible PD and QC power sources. Actual charging performance depends on the power source, cable and battery specifications. Support for these power sources does not imply a guaranteed fast-charging speed.

Integrated Battery Protection

According to the supplier, the built-in protection circuit provides:

• Overcharge protection
• Over-discharge protection
• Overcurrent protection
• High-temperature protection
• Low-temperature protection

Use and charge the battery according to the manufacturer’s instructions.

SPECIFICATIONS

Product Type: Aftermarket rechargeable derailleur battery
Intended Application: Compatible SRAM AXS / eTap derailleurs
Rated Capacity: 300mAh
Labelled Voltage: 7.4V
Labelled Energy: 2.22Wh
Charging Port: USB-C
Housing: Carbon fiber
Finish Options: 3K Carbon Weave / Forged Carbon Pattern
Reference Weight: Approximately 20.5g for the pictured sample
Charging Power Source Support: Compatible PD / QC power sources, according to the supplier

COMPATIBILITY

Please confirm your exact derailleur model before ordering. Compatibility should not be assumed across every SRAM AXS or eTap component.

If you are unsure, contact us with your derailleur model and a photo of the battery mounting area.

This is an aftermarket replacement battery, not an original SRAM product. SRAM, AXS and eTap are trademarks of their respective owner and are used here to identify the intended application.

FREQUENTLY ASKED QUESTIONS

Do I need a separate charging cradle?

No. You can charge the battery directly through its built-in USB-C port using a compatible power source and cable.

What capacity is available?

This product is currently available in 300mAh only.

What is the difference between the two finishes?

3K Carbon Weave has a regular woven appearance. Forged Carbon Pattern has an irregular carbon appearance. Both options have the same listed 300mAh capacity.

Can I use a PD or QC charger?

The supplier states that compatible PD and QC power sources are supported. Charging speed depends on the battery, charger and cable. Compatibility with every charger and cable combination is not guaranteed.

How much does the battery weigh?

The pictured sample shows approximately 20.5g. Actual weight may vary slightly.

Is this an original SRAM battery?

No. This is an aftermarket replacement battery intended for compatible SRAM AXS / eTap derailleurs.