1 new mold, thick material, compact structure, good fit, not loose. Longer lead wire is used for factory supporting products, and electronic production DIY requires higher occasions.
2Adhering to environmental protection certification ABS thick material, good strength, smooth surface, good texture, non-toxic and tasteless.
3 Contact spring adopts high-strength steel nickel-plated spring, which has large elasticity, good anti-corrosion and anti-rust, long service life and better contact with positive electrode cap.
(Ordinary iron springs are used in ordinary boxes. If the battery is not replaced in time, the liquid will be rusted and scrapped, the contact is bad, etc.)