FeaturesRechargeable Lithium-ion battery packSuitable for iPhone 6s1810 mAh capacityThe TTEC Performance Series Rechargeable Battery Pack for iPhone 6s - The standby and talk time of your battery may vary depending on your location or region, the phone calls you make, your fixed or active presence.The usage period of your battery may decrease due to use over time, this is a natural process.To prolong the life of your battery, do not leave it connected to the charger when it is full.Keep your battery away from excessive sunlight, flammable and caustic substances.