buy a new battery.
altanater is junk
possible altanator
Weak battery? not holding a sufficient charge Alternator not charging battery sufficiently?
only need to change a battery if the battery is not holding a charge suffient to start the engine
battery not holding a charge, altenator not putting enough power.
Your battery will be on for a short time (i'm talking about, like, 70% less charge then it used to).
If your Galaxy SIII will not charge completely, you may need a new battery.
maybe the battery isn't holding charge
There are normally two reasons a battery will not hold a charge. First off, the battery may have a dead cell which means the battery must be replaced. Secondly, something may be on pulling power from the battery. This can be a light, or a relay that is stuck.
Have the battery checked out. It may have a dead cell and not holding a charge,
you could need a new battery, may not be holding a charge well.
The battery just isn't holding a charge. Time for a new one. Batteries can die suddenly like this.