Powerful energy backup, add hours of power to your digital devices. Samsung A level battery chip, high conversion rate Portable, convenience and freedom, power up your digital devices at any time, anywhere. The use of advanced intelligent protection chip, the overcharge protection, discharge protection, overload protection chip, short circuit protection, leakage protection, and five heavy security protection. The li-ion battery, long service life, more safety. Apply to most digital products, some model may not apply to this product.