It integrates multiple operations such as Test (voltage test), Strip (wire stripping), Cut (wire cutting), Crimp (crimping), Split (wire splitting), Wrap (wire winding), Hold (clamping), etc., covering common needs in electrical work. Supports AC/DC voltage testing ranging from 12V to 250V, suitable for safety testing in low-voltage electrical environments. Tool length is only 20.7cm (8.15 inches) and weight is 251g (8.85oz), easy to carry and one-handed operation Does this wire stripper require button batteries for the voltage tester? No, it doesn’t! This upgraded plier has a built-in rechargeable battery with USB-C charging. No more button batteries. Charge with a Type-C cable for 1-2 hours, get hundreds of tests per charge. Perfect for job sites and outdoor repairs. Can this plier work for both live/neutral wire testing and regular electrical tasks? Absolutely! This 8-in-1 plier combines a 12-250V voltage tester with stripping, cutting, crimping, and more. It replaces multiple tools for home DIY, HVAC, auto repair, and professional use. How long does the battery last on a full charge? The built-in 3.7V battery charges in 1-2 hours and supports over 300 voltage tests per charge. It lasts weeks with daily use and can be topped up anytime with a power bank for outdoor or job site work. Is the voltage tester safe to use for beginners? Yes! It has non-contact & bare-hand testing modes, with LED indicators and audible alarms for live wires. The dual-alarm system lets you quickly identify hot/neutral wires safely, great for DIYers and pros alike.