polymer lithium battery

This type of battery is designed for small, power-sensitive electronics and is found in many portable devices.

The code 701522 likely represents a battery with dimensions of $7$mm x $15$mm x $22$mm, which has a nominal voltage of $3.7$V and a capacity of $560$mAh. This is a small, flat lithium-ion or lithium-polymer battery commonly used in portable electronic devices