EVE 40PL 70A 4000mAh 21700 Battery

EVE INR21700/40PL 21700 4000mah Specifications: Size: 21700 Approximate Diameter: 21.15mm +/- 0.1mm Approximate Length: 70.15mm +/- 0.15mm Brand: Eve Manufacturer Rated Nominal Capacity: 4000mAh Manufacturer Rated Max Discharge Current: 70A (80℃ max temp) Nominal Voltage: 3.6V Peak Voltage: 4.2V Protected: NO Style: Flat Top Color: Blue The EVE INR21700-40PL is a high-performance, 4000mAh lithium-ion rechargeable battery built in the popular 21700 form factor.Key Technical SpecificationsForm Factor: 21700 cylindrical cellNominal Capacity: 4000 mAhNominal Voltage: 3.6V (Peak charge voltage of 4.2V)Max Continuous Discharge Current: 70A (temperature-limited to 80°C maximum)Style: Unprotected flat topCore Feature: Tabless StructureThe standout engineering feature of the EVE 40PL is its tabless internal structure. Instead of relying on a few small tabs to connect the internal "jelly roll" electrodes to the outer casing, the conductive path spans the entire length of the electrode. This provides key benefits:Drastically Lower Internal Resistance: Reduces energy waste inside the cell.Less Heat Generation: Allows the cell to handle extreme current draws (up to 70A) without overheating as quickly as traditional cells.Reduced Voltage Sag: Sustains higher, more efficient power output under heavy loads.