SRAM eTap and eTap AXS Battery

Product Overview

The SRAM eTap and eTap AXS Battery is a precision-engineered power source built specifically for riders who demand reliability, performance, and seamless integration with SRAM’s cutting-edge electronic systems. Designed to work across the entire SRAM AXS ecosystem—including eTap, Eagle AXS, and RockShox AXS components—this high-capacity battery ensures consistent energy delivery whether you’re navigating steep mountain climbs, sprinting on the road, or exploring rugged trails. Its compact design and advanced lithium-ion technology make it an essential component for any serious cyclist using wireless shifting and drivetrain systems.

Whether you ride daily commutes, weekend adventures, or competitive endurance events, this battery supports extended use without interruption. The minimal 24-gram weight means you get powerful performance without sacrificing bike handling or agility. Paired with fast-charging capabilities and robust environmental protection, the SRAM eTap and eTap AXS Battery delivers dependable operation in all conditions—rain, mud, dust, or heat.

Key Features

• High-capacity design: Delivers reliable, sustained power for all SRAM AXS devices, ensuring uninterrupted performance during long rides or technical terrain.
• Advanced lithium-ion technology: Provides stable voltage output and long cycle life, maintaining efficiency through thousands of charge cycles.
• Ultra-lightweight construction (24 grams): Adds negligible weight to your bike, preserving speed, responsiveness, and handling across all disciplines.
• Fast charging capability: Recharges fully in 60 minutes or less, minimizing downtime between rides and maximizing time spent cycling.
• Durable battery terminal cover: Shields the connection from moisture, dirt, and debris, protecting against corrosion and maintaining secure contact over time.

Technical Specifications

• Battery type: Lithium-ion
• Weight: 24 grams
• Charging time: 60 minutes or less
• Compatibility: All SRAM eTap, Eagle AXS, and RockShox AXS components

Benefits & Use Cases

This battery is engineered for cyclists who rely on SRAM’s electronic systems for smooth, intuitive control. It powers a wide range of devices, including SRAM eTap front and rear derailleurs, Eagle AXS rear derailleurs, RockShox Reverb AXS seatposts, and Flight Attendant suspension systems. This unified digital cockpit experience allows riders to customize gear shifts, adjust saddle height on-the-fly, and fine-tune suspension performance—all from a single, integrated platform.

Its versatility makes it ideal for diverse riding styles and conditions. Endurance racers benefit from the long-lasting power needed for multi-hour events, while trail riders appreciate the ability to recharge quickly between laps or after muddy descents. Commuters and touring cyclists also find value in the fast recharge feature, which lets them top up the battery at home, work, or even on the go using a compatible USB-C charger.

The lightweight build ensures that every gram counts, especially in disciplines like cross-country mountain biking or criterium racing where aerodynamics and agility are crucial. Even with its protective terminal cover, the battery maintains a sleek profile, integrating cleanly into your frame without protruding awkwardly or complicating maintenance.

Because the battery is designed exclusively for SRAM AXS systems, it offers optimized communication and power management with each connected device. This ensures precise actuation, responsive shifting, and consistent performance—no matter how demanding the ride becomes.

Important Notes

The package includes one high-capacity SRAM AXS battery and a durable terminal cover for enhanced protection. For optimal performance and longevity, store the battery in a cool, dry place when not in use. Avoid exposing it to extreme temperatures, such as leaving it in a hot car or freezing environment, as this can affect battery health and lifespan.

When installing or removing the battery from any AXS device, ensure proper alignment with the mounting bracket to maintain a secure connection. Incorrect insertion may lead to intermittent power loss or damage to the contact points. Always follow the manufacturer’s guidelines for charging and storage to preserve battery life.

It’s important to note that this battery is not compatible with non-AXS SRAM systems—including mechanical groupsets, previous-generation wireless setups like Shimano Di2 (which uses a different standard), or other brands’ electronic components. Only SRAM’s AXS platform supports this specific battery and protocol.