Qizhan Power Full-Tab Battery Pack Launched to Empower Heavy-Duty Power Tools
In the overseas power tool battery track, full-tab battery products have been rolled out one after another to tap into the heavy-duty operation market. New overseas products mainly adopt the 24V Max platform, available in 4Ah and 8Ah versions with a maximum output power of 2400W. They deliver remarkable advantages in endurance and discharge capacity under heavy high-load tool scenarios, yet the performance improvement is limited under low-load working conditions.
As early as 2025, Qizhan Power Technology Co., Ltd. achieved mass shipment of Full-tab battery packs, launching full-tab battery solutions based on 18650/21700 cells. Its technology implementation stays at the forefront of the industry, benchmarking the cutting-edge overseas power tool battery technologies.
I. Core Technical Advantages of Full-Tab Cells
Qizhan Power’s full-tab cells adopt a structural process where the whole plate is welded to the current collecting disc after winding, with current conducted out via a metal cover. Compared with conventional tab cells of the same capacity:
Internal resistance is greatly reduced, and charge-discharge efficiency rises by 20%;
Cell cycle life is extended by 30%;
Heat generation drops by 20%, perfectly matching the continuous high-current heavy-duty operation scenarios of power tools.
Conventional tabbed cells tend to heat up at the tabs and suffer large voltage drop during continuous high-power discharge. The full-tab structure features a short current path and large conductive cross-sectional area, enabling better temperature rise control under high-rate discharge. Its performance benefits are concentrated in heavy-duty tools and high-intensity, high-load working conditions, meeting the demand for instantaneous high-current output of high-power power tools such as impact wrenches and circular saws.
II. Battery Pack Structure and Heat Dissipation System Design
Qizhan Power has developed a complete supporting battery pack tailored to the characteristics of full-tab cells:
Customized new housing structure: Inner and outer housings are specially developed for the 18650-4.0Ah full-tab battery pack. Optimized housing structural design improves overall heat dissipation capacity.
Optimized connecting plates and materials: The current direction of connecting plates is optimized to lower loop resistance for smoother current conduction and reduced loop heat generation. Paired with thermally conductive silicone sheets, it quickly transfers heat from cells to the outer housing.
Graphene heat equalization technology: Graphene thermal conductive materials are adopted to evenly spread cell heat, further restraining local hot spots during high-power discharge and enhancing the safety and continuous output capability of the battery pack.
III. Industry Comparison & Product Value
Overseas equivalent full-tab batteries still have supporting shortcomings: the matching new-generation high-power tools have not been released simultaneously, fast-charging parameters are undisclosed, and there are no supporting new fast chargers. Qizhan Power’s full-tab battery pack is developed in an integrated manner covering cells, connection schemes, housings and thermal materials. It can support 20V/24V power tool platforms and provide complete high-power battery solutions for tool manufacturers: ✅ Sustained high-power output under heavy-load conditions ✅ Excellent temperature rise control to reduce thermal failure risks ✅ Longer cell cycle life to extend battery service life ✅ Integrated structural design, with customizable capacity and output power according to customer specifications
Note: The performance advantages of full-tab batteries are barely noticeable for low-load equipment such as work lights and radios. Their core value lies in long-hour high-load operation of heavy-duty power tools, which can significantly boost operation endurance and reduce heat generation during high-current operation.
IV. Application Scenarios
Compatible with high-power cordless power tools including garden tools, impact wrenches, electric circular saws and angle grinders. Benchmarking top-tier overseas full-tab battery products, it serves the European and American power tool market
