What´s the lifespan of the battery of the Grail:ON?
According to Bosch, a precise life span is impossible to forecast. The battery’s service life will depend mainly on the nature and duration of the stress to which it is subjected.
Maximising the lifespan of your battery is simple.
Store the battery in a dry environment, away from direct sunlight at a room temperature of around 15° to 20° C.
If you don’t ride for a while, leave the battery charged between 30% and 60%.
And ideally, charge the battery at room temperature.