SRAM AXS battery alternatives

[c74]

Anyone with experience on alternative SRAM etap/AXS batteries?

My aim is to find a AXS batteries with greater capacity to get rid of charging anxiety.

Bigrock has one with claimed 600mAh, does it hold twice the SRAM originals capacity of 300mAh?

Any else out there that has tested any alternatives?

Cheers,
C

[cLs_elite]

I'm curious about aftermarket brands as well because I'm about to order some SRAM AXS batteries. Unfortunately, I have no experience / tested any other models, and there isn't much information or many reviews out there...
I'll probably stick to the SRAM ones.

[Da11as]

I've been using MRX batteries for AXS for a while. Although the capacity is smaller, they are significantly lighter and cheaper so you can carry spare battery without issues and simply get more batteries to not worry about weekly charging.

[klindsey00]

been using these off amazon for a while, seem just fine but are regular capacity, not riding a ton right now so i charge them every few weeks

https://tinyurl.com/mvzvxnjr

[cLs_elite]

Did you order your axs batteries?

[Sebastian]

I’ve been using RRSKit batteries off eBay. No issues other than maybe they didn’t like the cold that much and had to be charged more often. That might be normal with the regular ones, too. I wouldn’t know. I bought my Sram Axs used without batteries and only ever used these. Also, the remaining charge that is displayed in the app sometimes doesn’t seem to be terribly accurate. I just charge them as soon as the derailleur give me the red warning light. As long as it’s not freezing outside that usually means they got more than enough juice to finish the ride and then charge.

[Sakizashi]

I’ve been using RRSKit batteries off eBay. No issues other than maybe they didn’t like the cold that much and had to be charged more often. That might be normal with the regular ones, too. I wouldn’t know. I bought my Sram Axs used without batteries and only ever used these. Also, the remaining charge that is displayed in the app sometimes doesn’t seem to be terribly accurate. I just charge them as soon as the derailleur give me the red warning light. As long as it’s not freezing outside that usually means they got more than enough juice to finish the ride and then charge.

It's not normal with genuine batteries. The low battery reported in the app and to the head units is the same and corresponds to indicator lights on the derailleurs. I ride in subfreezing temperatures and have never noticed a change in battery life between winter and summer. Theoretically, there should be some, but I've never noticed.

[Sebastian]

That’s good to know then. Thx.
I only ever had one incident where the RD battery died mid ride. And to be fair, I don’t really pay particularly much attention as to how long the batteries hold their charge. I also don’t really check the app often. It just works reliably and every now and then when I feel like it’s been a while I charge them.
Like I said: I don’t really have a baseline to compare them against.