Some workouts are more taxing for the battery than others, for example climbing at a low rpm (candence). So if you climb a lot during your workouts, especially at low rpm, you might actually be taking more out of your battery than you are putting back in due to the lower efficiency of charging. The end result will be that your battery is actually drained despite your hard work. If the TrueTrainer is low on battery, the experience may be affected due to the lack of power. For more information on the battery please read Why is my battery dead after my workout?
Will my battery risk getting overcharged?
The cool thing about the electronics inside a TrueKinetix product with a battery is that it only draws energy from the charger when it needs it. So if you generate energy from cycling, no energy will be drawn at all. If your battery is full this means that only in some instances (low cadence, high force see …) energy will be requested from the charger.
This means that only in extreme cases when you continuously discharge the battery more than you charge it, power will be drawn from the charger. In all other cases, only at incidental moments, your device will draw power from the charger. That is why we recommend you plug it in if you can. It does not consume energy if it does not need it.