When you purchase a cell phone, it usually comes with a power charger for a traditional electrical outlet. Most cell phones last only a day or two under normal use circumstances before they must be recharged. Many people do not think about what might happen if they face an emergency situation in which there are no electrical outlets to recharge their mobile phone(s). A portable charging device for a cell phone is one great way to protect yourself during an emergency situation. The Renogy E-GOS 2800mAH is a portable battery charger with a small solar panel on the back that provides a great power source for an emergency situation. The portable battery charger can store about one full charge for most cellular devices. These items are currently in stock at renogy-store!