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1. It is suitable for DIY and maintenance of all kinds of DC equipment, with screw hole at the bottom and pre-installed wire, it is easy to operate.

2. Easy to install: 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.

3. Sturdy material: solid material, high strength, good toughness, not easy to crack.

4. DIY: Can be assembled with different size battery box, can get DC 3.7V, 7.4V, 11.1V, 14.8V voltage.

5. Applications: toys, electronic DIY, breadboard power supply, LED lighting power supply, low voltage electrical equipment, remote control, radio, quartz clock, wireless keyboard, electronic calculators, doorbell, mobile digital recorder, remote control, radio , quartz clock, electronic calculators, doorbell, tape machine, electric toys, wireless mouse for children/adults, strong light flashlight, electric shavers, camera flash, electric toothbrush, game handle, strong light flashlight