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🔋 Power your ride, own the trail—never get caught powerless again!
MRX Solutions offers a dual pack of rechargeable lithium-ion replacement batteries designed 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 full interchangeability and integrate with the SRAM App for real-time battery monitoring. Included red protective covers with charge indicators ensure you’re always race-ready.









| 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 | #13,944 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #5 in Cycling Electronics |
| Brand | MRX Solutions |
| Customer Reviews | 3.9 out of 5 stars 273 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 |
C**H
Have two bikes with SRAM AXS and needed backup batteries
I own a MTB and Gravel bike both run Sram AXS. Each came with a SRAM branded battery. I also have a road bike with Shimano Di2. The Di2 battery lasts months while the SRAMs run about half of that. But the SRAMs are easier to remove and cheaper to replace. Although these MRX versions are much better value. Due to the shorter battery life I needed to start carrying a back up. Found these and saw decent feedback and have had no issues so far. Some claim these do not last as long as the SRAM branded batteries. My guess is they likely come from the same factory. I have not conducted any rigorous testing to determine if they are better or worse but for the much lower price it is a no brainer to have 3 or 4 of the MRX on hand.
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).
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.
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.
G**F
Important shifter battery
Both batteries work nicely!
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.
P**E
Seems like a solid replacement for the OEM battery at a fair price
I was a tad skeptical about these batteries given the price and a few negative reviews. Since the OEM battery was much more expensive AND would take several weeks for delivery I decided to take a chance on these. While I've only ridden about 90 min so far on the new battery and can't comment on battery life, the charging was fine, as is fit, and there is no indication the battery will last significantly shorter than the SRAM. The peace of mind to have a back up is well worth the ~$30 delivered for two spares. I now have a fully charged SRAM battery in my saddle pack and am running one of the MRX batteries in the derailleur. Here's to no more delayed or disrupted rides as a result of a dead derailleur!
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
2 weeks ago
2 months ago