battery wear

In product instruction booklet matters needing attention:This is to avoid needless battery wear.What consults master this battery wear the precise meaning is?
Battery consumption What product is this?
According to product difference “battery” the meaning is dissimilar.
sometimes “battery” expresses the battery, sometimes expresses the one whole set product.
If this product needs the battery, then here “battery wear” possibly is refers to the battery capacity the consumption or battery’s damage.
If this product does not need the battery, then here “battery wear” possibly is refers to the one whole set product the damage.
But if it appears in the matters needing attention, then the latter’s possibility is quite big.