Model Number

PH2477

PH is a new type of rechargeable Li-ion button cell, with a positive material of Nb_yO_x and a negative material of Li-AL alloy instead of C. With a 2.0V voltage, 1.8V-1.6V working voltage, Terminate electric voltage:1.5 V，stable cycle performance and perfect safety performance, the PH button cell is becoming the most popular type of Li-ion battery.

The characteristics of PH button cell are as followings:

1. Perfect safety performance: the PH button cell doesn’t have the danger of over charge and over discharge. And the vibration, short circuit, nail pricking, impact, crush, drop and other safety tests meet the UL request.

2. Good over charge endurance : the thermal change in high temperature is very small, and the stability and endurance for over charge is good.

3. Superior discharge performance: the discharge curve is stable and the cycle life, charge and discharge efficiency is superior, it is good for electric equipments.

4. Good cycle life: the material of PH button cell won’t occur the volume effect which  affects the electrochemistry reaction : That is the reason why the material have good cycle performance. And the rest capacity will keep more than 80% of initial capacity after 300～500 cycles.

5. Good shelf life: The shelf life of Li-ion battery can be tested by the size of self-discharge. There are two types of capacity loss for self-discharge, one is restorable capacity and the other is non-restorable capacity. The restorable capacity can resume 95%～98%.