Originally Posted by
Trsnrtr
That's a good number of hours assuming 15 mph which would be around 50 hours. I've never been able to get that, even when new. I remove my batteries when the bike is in the car and reinstall them when ready to ride. Since I don't really pay attention, my front and rear batteries usually have the same hours on them. I've only had a battery go dead once but when I switched from front to rear, it went dead three miles later.
First you should remove the batteries when transporting the bike. There is an accelerometer that activates the batteries so they will be active. The real draw when when they are being used so the FD is used a lot less than the RD. This means the RD battery will run down quicker. When the RD battery goes solid red, the FD battery will still be green. I swap them and when both are solid red I recharge both.