Just a heads up for those in colder climates: Had the first frost here yesterday, and my right shifter battery completely died - 10 minutes before the start of a race.
Unfortunately, the whole groupset then went completely dead until I got back home and plugged it in (there was plenty of battery on the RD, but I couldn't access it in the app or make it move at all).
Hopefully, the problem is just that the coin cell batteries that come with the shifters are terrible, because they should definitely last more than 4 months of about 10 hours / week. So yeah, just a suggestion to swap the stock batteries if you live somewhere cold.
(LOL!) First frost! In my neck of the woods, we've already had several snow days, and frost, most mornings, since before Halloween.
Regarding the crappy
very low quality CR2023 batteries that come with Wheeltop products, Their OEM batteries last at best 2 to 3 months. Their crappy button batteries have been discussed a couple times on the EDS OX and TX threads. (
I feel for you because this exact same thing happened to me.)
It takes time to develop the preventive habits to keep from having dead or discharged batteries. One has to open the app each and every time before you want to ride the bike for anything important, and check the battery levels for the derailleur/s and shifters. I have 4 Wheeltop systems in use. I always carry at least one CR2032 battery with me, (along with a quarter to open the cover)
I purchase the 12-pack of of Duracell CR2032s from Costco when they have them on sale. Even the Duracell batteries only seem to last, at best, 6 months if you ride and shift a lot.
Regarding CR2032 batteries" New voltage is 3.3 to 3.2 Volt, On our shifters, it appears that the batteries are good down to 3.0 volts, then I swap it out.
At 2.9 volts, the battery is considered weak, at 2.7V they are considered dead.