1、Long Standby Time: The standby time can be up to 1 year when it is turned off, and the storage time can be up to 3 years. It can be picked up and used without maintenance. 2、Weldable Nickel Plated Tape: Maximum weldable 0.2mm nickel plated tape, 0.25mm slotted nickel tape to assemble 18650 and other battery packs, recommended for long term use of 0.15mm. 3、Built in Ammeter: The digital display portable spot welding machine has a built in ammeter, which is easy to operate and easy to use. 4、Short Circuit Protection: This digital display spot welder has short circuit protection function and has a high current of 1100A. 5、Applicable Scene: It can be used for power bank, toy car maintenance, power lithium battery and other scenarios.