Small Battery for SRAM AXS Red eTap GX Eagle Force Rival XX1 X01 Derailleur

Bought this as a backup to permanently keep in my saddle bag since I know I will eventually forget to charge my battery or will leave home with the battery still on the charger. Used it on one ride to make sure it worked and had no issues, but can’t speak to total battery life. Glad I found this smaller option, as it goes unnoticed tucked away in my saddle bag alongside a tool, co2, and a tube. Feels good to know its there to get me home or save a bike trip some day.

I keep a hand full of these charging in my truck. They are smaller than the batteries that came with the bike and colorful as well. I’m biking in the mountains so there’s a lot of shifting. I have never run out of juice.

it's 13g on my Park Tool scale vs 25g for a sram battery. surely that means less battery life, but it'll work fine for probably 2/3rd to 1/2 as long. still a good value for the price, IMHO.

The perfect battery for the front derailleur. Runs out about the same time as stick battery on the rear. Nice to carry as a spare as well. Perfect for weight weenies.

Very light, battery shows good health in Stam app.

It worked as expected, though I can't comment on longevity.

Due to much lower capacity than the real thing, these show "Low, 1.5-5 hours" on the AXS app when it's fully charged. Charges fine on the SRAM charger. Fit is kinda loose but it's not a problem.

Funcionan muy bien

Item arrived quickly. My only issue is that the battery is much smaller than OEM battery. I really only wanted it as a back up in case the primary battery dies mid-ride so I guess it will work fine. I haven't tried it yet, but I hope it will work just fine for what I need.

Bought this as a backup unit. Worked perfectly when needed. Even like that there's a sort of cover so can just throw it in my saddle bag until needed.

Fonctionne bien