Bought this 2nd battery for my ring security system. All charged and within 12 hours both batteries are drained. Bought the solar panel, placed it by the unit where direct sunlight is strong. Does not charge it. Have to constantly, charge and recharge the batteries. Ring unit is plastic and the top closure where the batteries are, is flimsy and does not snap shut well, could be why the batteries are draining. Frustrating to buy this unit, spend over $200.00 or it and accessories and not have it work longer than12 hours.