eTap & eTap AXS Battery

eTap/AXS Battery

• What type of batteries do eTap AXS shift-brake levers require?
Our eTap, eTap AXS and AXS shifters require one CR2032 battery per shifter. See the shifter and controller battery replacement procedure here. See more
• How many hours of riding can I get from a fresh set of shifter batteries?
Your shifter CR2032 batteries can typically go a long way, about two years with normal use, especially if you're using a name-brand battery without a bitter coating. Beware of generic batteries, as... See more
• How do I charge eTap AXS derailleur batteries?
To charge AXS derailleur batteries, remove the battery from the derailleur and charge them on the AXS battery charger. These derailleur batteries are easy to remove without any tools. The charger u... See more
• How long does it take to charge eTap AXS derailleur batteries?
The full charge time is typically 60 minutes when charged with an A/C adapter. The charger uses a micro-USB interface, and a standard USB to micro-USB cable is used to connect the charger to the po... See more
• How should I store my AXS equipped bike and derailleur batteries during the off-season or when the bike is not in use for 2-3 months or more?
AXS equipped bikes should be stored with the batteries removed from the derailleurs, with battery blocks and battery covers installed to prevent damage to the battery latch and contacts.  We recom... See more
• How far can I ride on a fully charged eTap AXS derailleur battery?
At full charge and under normal use, an AXS battery will last different amounts of ride hours, depending on the component: - Road derailleurs: 60 hours - MTB derailleurs: 25 hours - Dropper posts: ... See more
• How long do eTap AXS shifter batteries last?
The CR2032 shifter batteries used in all eTap AXS electronic drop bar shifters will last about two years under normal use (estimated at 15 riding hours per week). See more
• Are SRAM AXS controller (shifter) batteries replaceable?
Yes, they are! Our SRAM AXS and eTap AXS shifters and our Eagle AXS controllers use one CR2032 coin-type battery in each. Below are a couple of resources on how to replace them:   - Road AXS Shifte... See more
• Are the front and rear derailleur batteries interchangeable?
Yes, front and rear derailleurs, as well as dropper posts, use the same AXS batteries. This means that AXS batteries are interchangeable between components. Additionally, shifters use one CR2032 co... See more
• What happens when an eTap battery is low? Will the shifts slow down? Will the shifter work intermittently?
Shifting performance is unchanged regardless of remaining battery charge. The components do provide indicator lights for battery life. See this article to know when to charge your batteries: How do... See more
• Will components stay awake when the bike is in my car?
Yes, components wake up and remain awake as long as the bike moves or vibrates. However, when you are not shifting, the battery trickle-down is incredibly slow. Additionally, sensors in each compon... See more
• How do I know when to charge the batteries in my derailleurs or replace the shifter batteries?
After each shift, an LED light on each component turns on.  The indicator lights for battery life are as follows:   Rear derailleurs: Green LED: >25% charge, 15-60 hours of ride time remaining Red ... See more
• How long do the eTap 2x11 CR2032 shifter batteries last?
Fully charged CR2032 shifter batteries will last two years under normal use (estimated at 15 riding hours per week). See more
• Do eTap shifters come with rechargeable CR2032 batteries?
No, but they are replaceable with rechargeable CR2032 batteries. See more
• How long does it take to replace 2x11 eTap shifter batteries?
It is a 5-minute job. To remove eTap 2x11 shifter batteries, simply peel back the hood and remove the three screws on the battery hatch.  Hoods do not have to be fully removed for access to the bat... See more
• Do I have to remove the eTap derailleur batteries to charge them?
Yes! Batteries must be removed from the derailleurs in order to connect them to the charger.  Take a look at our Overview video of the SRAM RED eTap system for a tutorial on the meaning of the LEDs... See more
• Can I charge both derailleur batteries at the same time?
Yes, both AXS batteries can be removed and charged at the same time. However the two derailleurs do not use power at the same rate, so they typically do not require charging at the same time. See more
• Does the AXS battery charger come with the proper AC power adapter for my country?
The eTap AXS charger uses a USB power cord. That means you can easily charge it anywhere you have a USB power source (e.g. computer, car, AC to USB power adaptor, solar USB charging devices, airpor... See more
• Do I need a tool to install and remove the AXS battery from the derailleur?
No, AXS batteries are installed and removed using a tool-free latching mechanism.   See more
• Does SRAM recommend carrying a spare eTap battery (or batteries) when going on a long ride?
Your AXS batteries dying mid-ride is unlikely. A fully charged battery will last hours upon ride hours depending on the component: Road derailleurs: 60 hours MTB derailleurs: 25 hours Dropper posts... See more
• How long does it take to charge an AXS battery?
It takes approximately one hour to charge a SRAM AXS battery with an A/C adapter.  The charger uses a micro USB interface. A standard USB to micro USB cable is used to connect the charger to the po... See more
• Are 11-speed SRAM RED eTap derailleur batteries compatible with SRAM RED, Force and Rival eTap AXS derailleurs?
Yes, both groups use the same batteries and chargers. You can find out more in our article: All about SRAM AXS batteries See more