A New Battery Standard for Notebook Safety and Reliability
18 October 2026
In a push to improve the safety, reliability, and quality of laptop batteries, major computer manufacturers and the IEEE Standards Association worked together to develop IEEE 1625-2008, an industry standard specifically designed for rechargeable batteries in multi-cell mobile computing devices. The new standard, released in September 2008 after 22 months of development, aims to provide a baseline design that notebook makers can reference to produce better, safer, and more intelligently manufactured laptop battery packs.
The standard is a successor to an earlier effort, released in 2006, which laid out the technical requirements for lithium-ion and lithium-ion polymer batteries destined for notebooks and mobile devices. Those early guidelines were already comprehensive, specifying everything from the pack's electrical and mechanical construction to the control software that governs charging and discharging. That previous version also included the communication protocol for battery packs to interface with their host devices, which is important for remotely monitoring battery health and status.
But the 2008 revision went further, providing a broad array of qualification and reliability tests for notebook batteries. The specifications call for a 300-charge cycle test, a 200,000-g shock test, impact and vibration tests, and elevation tests. All of these are meant to ensure that battery packs perform safely before and after manufacturing and can withstand normal wear and tear. As laptops became the primary computing platforms for many users, battery safety for mobile computing gained importance.
The IEEE 1625-2008 standard does not cover nickel-based batteries, like nickel-cadmium and nickel-metal hydride, nor does it address single-cell batteries. Its focus is on lithium-based batteries for notebooks and other battery-intensive, mobile computing devices. Lenovo was one of the key contributors to drafting the new standard and helped expand the IEEE 1625 guidelines.
The company traditionally keeps its battery designs proprietary, but in August 2006, Lenovo announced it was sharing its lithium-ion battery technology with the notebook industry to improve reliability and safety. Lenovo emphasized that it was releasing this technical information not for competitors to copy its designs, but to promote safer engineering in lithium-ion batteries for notebooks.
The battery design elements Lenovo shared were significant. The company provided detailed specifications for redundant protections, failure detection, thermal and voltage tolerances, and safe charging methods. Lenovo even offered guidelines for mechanical battery pack design, including specifications for cell plates and pressurization mechanisms. This was a bold move that encouraged other notebook makers to adopt the specifications and test requirements of IEEE 1625.
The IEEE 1625 standard represents significant progress for notebook battery safety and reliability, though widespread industry adoption will take time. Notebook makers increasingly need to implement these standards to improve battery reliability and lifespan while eliminating inconsistencies between vendors. Research shows notebook battery failures remain a major warranty expense. Many users have experienced spare batteries failing before reaching 500 charge cycles - less than two years with daily charging. As laptops remain essential productivity tools, battery durability depends on manufacturers adhering to established standards.
As with all design standards, some industry leaders are working to meet and exceed IEEE 1625. If widely adopted across notebook manufacturers, this could finally bring meaningful improvements to mobile computing reliability.