These batteries are the premier quality batteries for your GoPro Hero 3. The Newmowa batteries work well and are available at a much lower cost. This battery extends your camera runtime with a complete backup. The pack includes 3 sets of replacement battery with a triple battery charger. You have different options to charge your battery. You can charge through conventional micro USB, mini USB input, and with a wall charger or car charger. It has 3 channel chargers. Safety is guaranteed 100%. This includes circuit protection, overcharging, and short circuit. One year warranty and 24 hours of service are available. You can buy it on Amazon.