Originally Posted by
cccorlew
The system connects to a Gramin. I have a 520 that reports the lowest batteries power It also flashes a warning when a battery gets really low. Plus, teh rear gets more shifts than the front, so runs down sooner. If that happens you just swap them. Or you can carry an extra battery. They are pretty small and light.
Curtis, I have E-Tap on my Guru Photon and I do carry an extra battery in my seat bag but the one time it was needed, it wasn't because a battery had run out of electricity. On a rather bumpy descent, the lower "nub" (for lack of a better word) on the battery broke off. No nub, no stay in derailluer. So . . . I pulled spare out of my seat bag, plugged it in and carried on, no problem!
The next morning I called SRAM and told the rep what had happened. He asked for the serial number off the broken battery then sent me a new battery, no charge.
Big picture, no complaints and happy with SRAM customer service!
Rick / OCRR