What Are They Doing? (Spot Welding)
Have you ever experienced this complaint: "After I installed this battery, my phone keeps turning on and off by itself"?
Well, I’m sure you’ll want to check out the explanation below:
The person in the video is performing spot welding on an iPhone battery (manual spot welding). Spot welding is a critical step in the manufacturing of mobile phone batteries. It uses localized heat and pressure to connect the battery cells and protection board, ensuring the battery's stability and safety.
Heating and Connection:
Electrical current heats the contact points, melting the metal to bond the two pieces together.
Controlling Parameters:
The heating time and current are carefully controlled to ensure a firm connection with good conductivity. This process requires highly precise techniques to avoid overheating or weak connections.
Cooling and Inspection:
After welding, the metal contact points cool rapidly to form a solid bond. Strict inspection follows to ensure there are no defects in the weld.
Spot welding is a fundamental process in battery manufacturing, directly impacting the safety, stability, and performance of the battery. Poor spot welding can lead to the following issues:
Loose Battery Connections:
This is why some batteries cause phones to frequently turn on and off. Loose connections result in unstable current flow, affecting the phone’s normal operation.
Declining Battery Performance:
Poor welding leads to reduced conductivity, which in turn lowers the battery's battery life and charging efficiency.
Serious Safety Risks:
Loose or weak welding contacts can cause short circuits, potentially leading to battery overheating, fires, or even explosions.
High-quality spot welding ensures a battery’s long lifespan and high performance. By using advanced spot welding technology in mobile battery manufacturing, the stability of the battery is greatly enhanced, extending its service life. This is especially crucial for wholesalers and retailers who rely on quality control to meet customer expectations.

As a wholesaler of mobile phone batteries and laptop batteries, guaranteeing product quality is our top priority. In large-scale production, ensuring each battery undergoes precise spot welding is essential to preventing later issues, such as auto-shutdown or performance degradation. Our mobile phone batteries are rigorously tested for spot welding quality, ensuring they meet international standards.
If you’re looking for high-quality mobile phone batteries or laptop battery wholesale, feel free to contact us. We provide top-tier battery solutions that ensure long-lasting, high-performance, and safe products.
Spot welding, as a fundamental process in battery production, directly affects battery quality and safety. High-quality spot welding is key to ensuring a battery's long lifespan and high performance. As an experienced mobile battery manufacturer, we rigorously control every step to meet the highest standards.
For more information on mobile phone battery wholesale and laptop battery wholesale, we offer professional consultations and solutions.
Click here to learn more: www.timeselectronic.com
Email: sway@timeselectronic.com
Whatsapp: +86-18682122390
Contact: Sway
Phone: 18682122390
E-mail: sway@timeselectronic.com
Whatsapp:0086-18682122390
Add: Room415,Huiyi Fortune Plaza ,Dalang street,Longhua Area, Shenzhen, China
We chat