How long does it hold a charge if I keep it in my bag as a spare?

(Perhaps overly detailed answer). I charged two of these batteries and a genuine SRAM one at the same time. I got 18 hours of riding out of the SRAM one over a 5 week period. Then I put in an MRX (5 weeks after charging), and got 12 hours over 4 weeks of riding. Then I put in the second MRX (now 9 weeks after charging) and got 8 hours. So, they seem to hold a charge well enough to use as backup.

Is this battery compatible with the sram etap charger?

I believe it’s the same charger for AXS and etap

What is the warranty on these batteries?

I don't know but for the money, just buy it. I haven't noticed the difference between it and the SRAM battery.

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MRX Solutions 2 Replacement Batteries for Sram AXS, for eTap Eagle XX1 X01 GX Reverb Force Rival Red XPLR, Just The Battery

Product ID: 393451992

Details

Battery Capacity
3 Volts
Battery Cell Composition
Lithium Ion
Brand
MRX Solutions
Number of Batteries
2 Product
Recommended Uses For Product
Bicycle

📱SRAM App compatible

🔋Up to 60h runtime

⚙️100% interchangeable

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KSh11397

Duties & taxes included

In stock

Sold byAmazon KenyaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power your ride, own the trail—never get caught powerless again!

UNIVERSAL SWAP GO - Fully interchangeable front and rear batteries for effortless maintenance and maximum versatility.
SEAMLESS COMPATIBILITY - Fits all SRAM AXS & eTap components including Eagle XX1, X01, GX, Force, Rival, Red, XPLR & RockShox Reverb.
SMART BATTERY MONITORING - Stay ahead with SRAM App integration that tracks battery life in real-time for peak performance.
DUAL POWER PACK WITH PROTECTION - Includes two batteries plus red protective covers with charge status switch—always be ride-ready.
ENDURANCE THAT KEEPS YOU RIDING - Up to 60 hours of power for road derailleurs and droppers—never miss a beat on your ride.

MRX Solutions offers a dual pack of rechargeable lithium-ion batteries designed specifically for SRAM AXS and eTap components, delivering up to 60 hours of runtime. Compatible with a wide range of SRAM derailleurs and RockShox Reverb droppers, these batteries feature smart app integration for real-time monitoring and come with protective covers for easy charge status identification, ensuring professional cyclists stay powered and prepared.

Specifications

ASIN	B09BC3GY5W
Antenna Location	Bicycle
Battery Capacity	3 Volts
Battery Cell Type	Lithium Ion
Battery Weight	1 Ounces
Best Sellers Rank	#37,633 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #5 in Cycling Electronics
Brand	MRX Solutions
Customer Reviews	3.9 3.9 out of 5 stars (270)
Item Weight	0.06 Kilograms
Manufacturer	MRX Solutions
Model Name	Batteries
Number of Batteries	2 Product Specific batteries required.
Reusability	Rechargeable
Unit Count	1.0 Count
Voltage	12 Volts

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