1. It is suitable for DIY and maintenance of all kinds of dc equipment, with screw hole at the bottom and wire preinstalled, it is easy to use.
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. Tough material: using tough material, high strength, good toughness, not easy to crack.
4.DIY: can be assembled by different size of battery box, can get the voltage 1.5 V, 3 V, 4.5 V, 6 V, 7.5 V, 9 V, 10.5 V, 12 V, 13.5 V, 15 V, 16.5 V, 18 V, 19.5 V, 21 V, 22.5 V, 24 V, 25.5 V, 27 V, 28.5 V, 30 V dc power supply.
