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🔋 Power your ride, own the trail—never miss a shift!
MRX Solutions offers a dual-pack of high-performance replacement batteries designed specifically for SRAM AXS and eTap components. Delivering up to 60 hours of battery life for road derailleurs and dropper posts, and 25 hours for MTB derailleurs and suspension, these lithium-ion batteries ensure long-lasting power. Compatible with the SRAM App for real-time battery monitoring, they come with red protective covers featuring charge status switches. Fully interchangeable across front and rear derailleurs and RockShox Reverb seat posts, these batteries provide reliable, versatile power at a great value.









| ASIN | B09BC3GY5W |
| Antenna Location | Bicycle |
| Battery Capacity | 3 volts |
| Battery Cell Composition | Lithium Ion |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 1 ounces |
| Best Sellers Rank | #16,447 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #7 in Cycling Electronics |
| Brand | MRX Solutions |
| Customer Reviews | 3.8 out of 5 stars 275 Reviews |
| Item Weight | 0.06 kg |
| Manufacturer | MRX Solutions |
| Model Name | Batteries |
| Number of Batteries | 2 Product Specific batteries required. |
| Recommended Uses For Product | Bicycle |
| Reusability | Rechargeable |
| Unit Count | 1 Count |
| Voltage | 12 volts |
D**D
Works as well as the OEM ones
I bought the set of two batteries along with a separate dual charger after having my rear derailleur battery die on me in the middle of a ride. Although it was easy enough to swap the front to the rear to get home, I didn't want to mess with that happening again. For a little over half the price of a single SRAM battery, I was able to pick up a pair of these. I now just rotate my batteries every 2 weeks and never worry about them running down. I haven't noticed any difference in how long these last compared to the SRAM ones.
M**D
Excellent performance so far
I had to return the first set because one of batteries wouldn't charge. Second pair work perfectly and so far they last longer than the SRAM batteries that I've been using for 2 years. We'll see how they fair long term but so far no complaints.
R**L
The quality is trash
These batteries are terrible. Bought them for spares after my seat dropper died on a ride. Charged them for one cycle and they died fairly quick and now it will charge for about 15 seconds and then the light goes out in the charging base. Total waste of money. I should have just bought OEM.
C**F
The price is good, but the tab breaks.
These are a low-cost replacement for the SRAM AXS batteries. I only use these for a RockShox AXS dropper post, not shifting, but yesterday (I've been using these for several months) I found that my dropper post wasn't actuating every time. When I examined everything, I found that on two of my batteries, the little tab on the bottom had broken off and so the battery was wobbly in there and the contacts were sometimes making contact, sometimes not. I'm not sure if this is an issue only with these off-brand batteries but from the two with the broken tab, it appears that the tab was glued in place and not part of the plastic casing. When not in use, the batteries are in their charger or have the red cover on them. But, of course, I can't find the tab that's broken off somewhere so I can't glue it back on and am not sure how trying to make a little tab will work, so I guess I need to buy new batteries now.
T**B
Goes the miles.
Why by the sram ones when they cost so much. These last about the same amount of time as factory ones. Would recommend.
D**N
Limited battery lifetime. Otherwise usable.
Dies permanently, years sooner than OEM. Worth it? Maybe if you don't care about 2-year usable life.
M**N
Indistinguishable from OEM
They work well. I've had the pair in circulation and they work as well, or maybe better, than the OEM AXS ones. No issues with fit or compatibility. Battery life seems equivalent. I just keep a spare one of these in my bag and swap it out when the derailleur reports low, which is about 3 weeks of heavy riding (and two days before a race, just to be sure).
B**E
Cheap batteries.
Nice cheap batteries. They work great.
E**Z
Excelente producto
Funcionan súper bien
C**S
Race-test outstanding, initial testing successful
Previous reviews had me a little curious on whether these would work, but they arrived on time, charged fine and the derailleur accepted them no problem so... yeah? \o/ I will take them out for race ride testing tomorrow and if I do not have to switch back to the original battery in the 90 minutes or so I will be riding then they are fine. I was more looking at a "bring me home in case I forget to charge the original battery" solution , so any downsides from here on which are not including running for less than 90 minutes would be acceptable given the original replacements go for 90 to 120 bux and these were 40 for two of them.
W**M
Good batteries
Bought these for when I forget to charge the seam batteries that came with my bike. They perform well and I can’t tell much of a difference in ride time between these and the sram batteries. Price is very good.
A**B
No funciona provoca falso contacto
Artículo de muy baja calidad. Queda más pequeño que el origina Lo cual provoca un falso contacto y no funciona correctamente
P**T
Surprised
I am pleasantly surprised by these batteries. They seem to last as long and the stock SRAM batteries that came with my bike. I bought them as "just in case" spares, but have no issues interchanging them with the stock SRAM ones. Would buy again.
Trustpilot
1 month ago
2 weeks ago