It hasnt happened to me yet. But Ive heard the horror stories. Youre excited to ride, and halfway through your favorite route, your shifting stops working. Ugh! You forgot to charge the battery for your rear derailleur. Or your shifter pod battery is depleted. Either way, its not going to be fun to get back to the trailhead. Well, K-EDGE might have a solution for you with their new SRAM AXS Battery Holder.And Im giving it a quick lil review!(Photos / Ron Frazelle)Yes, people, this is where we find ourselves these days. I mean, the obvious solution to this is a cable-actuated drivetrain. But that would be downright silly and barbaric.The other obvious solution to dead drivetrain batteries is to bring extra batteries with you on your ride. But where do you put the spares? Sure, you can drop them in a hip pack or jersey pocket. But do you want to take the time to search for them when you need them? Or risk damage to the terminals from bouncing around in your bag? Wouldnt it be easier if the spares were mounted right there on your bike, all charged up and ready to roll?You bet it would be!K-EDGE SRAM AXS Battery Holder As an industry, weve fully committed to electronic drivetrains, more specifically the SRAM AXS system. That system needs batteries to work. K-EDGEs new SRAM AXS Battery Holder is designed to carry your extra SRAM AXS eTap battery (and coin cell!). You know, just in case.It attaches under and just below your bottle cage. I have it mounted to my Aventon Ramblas at the moment (which is kinda silly that an ebike needs extra batteries for the drivetrain, but thats a different story). I found it easy to install and precise and robust in its construction, though its not the typical CNC-machined aluminum the battery holder itself is 3D printed fireproof plastic with a spring steel mounting bracket. This is K-EDGEs first production 3D-printed part, to which they commented, As CNC machine guys, we are quite discerning and defensive about the 3D-printed connotation, that perhaps its not of quality. So we took extra time in designing and printing and testing and printing and testing and printing and testing, to make sure we were proud to go to market with this.The cover of the coin cell holder doubles as a battery door key for the AXS shifter pod.In UseI havent needed it yet, but it is nice to know that its there, securely holding my spare battery if I need it. It fits and feels secure when mounted. Its got a positive, confidence-inspiring snap when securing the battery. When loaded and closed, the system feels very secure, and I dont anticipate it coming loose during heavy trail use.I appreciate the clever, built-in key on the button battery cover to use to open the back of the SRAM shift pod. There is also a rubberized insert to help protect the batterys electrodes. Not to mention, its made right here in America, in good ol Boise, Idaho. Battery Holder Retail & DetailRetail: $30Secure latch mechanism for the roughest ridesHidden CR2032 watch battery holder for SRAM ShifterCoin-shaped removable battery cover for opening shifter coverWaterproof rubberized inset patch to protect battery electrodesFireproof plastic body and spring steel mounting armAvailable at the best bike shops and online partnersIn ConclusionI like this kind of organization in my life. Does it seem a little overkill? Perhaps to some, but not to me; I use the life philosophy of a place for everything, and everything in its place. If this is how you think as well, then this is an easy $30 for you to spend.More than anything, this mount mostly guarantees youll never leave home without a battery for your bike. You can still leave your battery on the charger at home, but as long as you always keep a spare mounted to the frame, youll spare yourself that oh sh*t moment when youve driven all the way to the trailhead without a battery in your derailleur. I would highly recommend this product to anyone who likes clever solutions that help keep you not only prepared, but organized, with the solution to your problem right at your fingertips.Check out all of the cool, precision bike bits that K-EDGE has to offer at the link below. K-EDGE.com