6900mAh High-Capacity Battery Compatible for WinBook CW140 Akoya S4403 S4402 S4401,40069191,4588105 (with Frame),Li-ion Polymer 0-Cycle Laptop Replacement Battery,with Tool Kits

Precise compatible product model: This battery is compatible For WinBook CW140, and the battery model is 40069191 (with frame). After the battery production was completed and installed on the equipment, we conducted compatibility tests. As long as you check that the product model and battery model are correct before purchasing, you can use it completely without any problems.
High-capacity battery life:The battery offers a High-capacity of 6900mAh, It is a New Upgrade-0 Cycle product, Longer working hours, no need for frequent charging.
Safety Features:The battery is equipped with insulating separators and IC smart chips inside,Equipped with multiple safety mechanisms like overcharge protection, over-discharge protection, short-circuit protection, and thermal management systemsIt automatically reduces frequency or cuts off power in high-temperature environments, and the operating temperature range covers -20 to 60.
Cycle Life & Durability: It adopts A-class lithium-ion/polymer battery cells, featuring high energy density and long cycle life. It can withstand a large number of charge and discharge cycles without significantly reducing capacity. High-quality batteries can endure 800 to 1000 cycles or more,Retains up to 80% capacity after 800 full charge cycles.
Fast Charging & Efficiency:Adopting intelligent fast charging technology, it automatically matches the optimal current, and the charging speed can be increased by 30%When the battery is fully charged, it will automatically cut off power to prevent battery swelling. Please use the original charger to achieve the best charging effect.