1. No spot welding pen required - No need for a spot welding pen when you go out or at home. The handheld spot welder does not require an additional spot welding pen and is convenient to carry with you wherever you go. It combines a built-in power supply and a soldering pen into one, making it easy to weld without the need for an external soldering pen. 2. Wide range of uses - suitable for 18650/26650/36650 and other cylindrical batteries, mobile phone batteries and electronic devices that require batteries. The spot welding machine can be used for electronic equipment that has been damaged due to battery damage, and can be restored to use after replacing the battery (similar to a handheld electric drill), saving money and environmental protection. 3. Easy to use - There are only 2 buttons, and the buttons of our spot welding machine are labeled, making them easy to use. The battery spot welder does not need to leave the palm of our hands. Press and hold the side power switch button with your middle finger for 2 seconds, press and hold the top gear adjustment button once with your index finger, and then hold it for 2 seconds to adjust automatic or manual mode. 4.11 Adjustable Levels - This spot welder has 11 adjustable levels of output power, which can be adjusted according to the different materials you spot weld. 1-3 gear cell phone batteries, 3-6 gear 0.1 mm nickel plate, 6-11 gear 0.12-0.15 nickel plate. It can spot weld more than 200 times on a single charge. 5. Multiple protection measures - although it is a miniature handheld spot welder, it has high-quality polymer batteries, overcharge protection, temperature protection, short-circuit protection, abnormal battery temperature alarm and spot welding shutdown function, and low battery voltage alarm. Ultra-low power consumption, longer standby time. 6. Exquisite packaging - Our package includes a handheld spot welder, 2 meters of nickel-plated plate, 1 sheet of matte paper, 1 Type-c charging cable and a user manual. Our packaging is very exquisite, making it a very valuable gift for friends and loved ones who like battery DIY. Product parameters: Product name: Battery spot washing machine Model Type: H1 Equipment settings: 11 levels adjustable Spot washing method: Automatic/ manual gear Product size: 43*25*192mm Input interface: Type-C Input parameters: 5v/1A (MAX) Output voltage: 4.2V (MAX) Output current: 650A (MAX) Working temperature: -10~60C Charging temperature: 0~60C Package list: Handheld spot Washing Machine * 1 2M nickel plate*1 Matte paper*1 Type-c charging cable*1 User Manual*1