RockShox Reverb AXS Dropper Seatpost - 30.9mm, 170mm, Black, AXS Remote, A1

A real cost commitment, but well worth the expense. Can easily be transferred to a new bike in the future

Time will tell. I'm a couple of months into using it. I ride 3-4 times per week and have yet to charge the battery. I know the price is over the top, but knew that before I bought it. Just as fast acting as the other cable dropper posts that I have. Very nice to lose another cable. Mine has 170mm of travel, which is almost enough. I have very long legs, so a 190-200mm would be best, but they don't make one. I also like the fact that with another controller, I can switch it between bikes. The AXS app works great as it does with my Eagle XX1 AXS shifter. Edit 09/2022, Still working strong. No maintenance issues, no performance issues. This dropper seems to be rock solid. Battery life is almost unbelievable. Happy consumer, given the known price which is ridiculous.

This the cutting edge technology! If you can afford it, get it! Way better than a diamond ring or some other garbage like that!

Not only it works like a champ, it also serves as spare battery holder for XX1 AXS. I would say seatpost battery would last 5-6 months, Derailleur battery lasts about 2-4 months, so I swap them when I remember or when red light blinks on derailleur, so I can continue riding (sometimes entire weekend). I wish SRAM made 180 mm or even longer dropper.