TM Interphone Lithium Core Battery Matched with PTM-8668L

Characteristic
A. Large capacity, long battery life;
B. Overcharge protection, over-discharge protection, short circuit protection and over-current protection.
C. Intelligent battery, automatic identification and matching with intercom;
D. Under the charging condition, the battery can be judged according to the actual situation.
E. Under the state of discharge, we can see all kinds of state information of the battery.
F, automatic identification, automatic calibration, abnormal alarm and other functions;
G. When switching directly from charging state to discharging state or from discharging state to charging state

The state is delayed for 5 seconds and then switched to the present state.