Easy to install, with ON/OFF switch and PH 2.0 connect port.
The battery is fixed by a stainless steel spring. It is very convenient to install and replace the battery, and it is not easy to damage other parts.
High quality, wear-resistant and durable.
Perfect external power source for electronic DIY, the battery holder is for circuit boards, electric toys, digital photo frames, electronic calendar and other digital products,and so on, add them in series if you need more voltage.