The best way you can give your cell phone’s battery life more capacity is to charge it when it is at about 50% of its power. The biggest killer of cell phone batteries is letting them get below 20% charged. Worse is letting it drain completely! Shorter mini charges during the day help the battery maintain maximum charging capacity. Another thing to avoid is buying a charger at a Dollar Store or convenient store. As tempting as it may be as they are cheaper, they are not calibrated correctly and can potentially damage your battery. The best bet is to buy a charger from your phone’s manufacturer.