To best maintain the functioning of the standard, rechargeable Lithium ion batteries in modern cameras, should the battery be used until the camera shuts down?
Some types of batteries have memory and their effectiveness is reduced if they are not fully charged and then used until fully discharged each time. (NiCad are an example.)
Are modern Canon cameras and batteries designed in such a way that the camera powers off at the optimum time towards the end of the batteries charge, minimizing the impact of memory on the battery? Or do Canon cameras by default let the battery become run down in such a way that the performance degrades substantially?
Might it be better to repeatedly partially discharge and then fully recharge the battery, than to fully discharge and then recharge the battery?
To extend the life of the battery, is it best to store it at a charge of up to 70%?