Since 2017, Boreilinsen Tools has proposed the "lithium battery sharing platform". All models in the platform can share 20V lithium batteries and chargers, thus bringing users a cost-saving and worry-free efficient working experience. The "lithium battery sharing platform" is based on our insistence on using high-quality lithium batteries and independently developing a complete set of "lithium battery management systems" with four major protection modules that can effectively monitor and protect battery packs and chargers. The platform now has hot-selling items such as electric hammers, electric drills, wrenches, angle grinders, reciprocating saws, and hair dryers, and is constantly expanding its product line to strive for full coverage of power tool categories. Among them, star models such as the 5401 brushless electric hammer and the 2903 brushless angle grinder have been well received by users after long-term market testing. Since 2017, Boreilinsen Tools has proposed the "lithium battery sharing platform". All models in the platform can share 20V lithium batteries and chargers, thus bringing users a cost-saving and worry-free efficient working experience. The "lithium battery sharing platform" is based on our insistence on using high-quality lithium batteries and independently developing a complete set of "lithium battery management systems" with four major protection modules that can effectively monitor and protect battery packs and chargers. The platform now has hot-selling items such as electric hammers, electric drills, wrenches, angle grinders, reciprocating saws, and hair dryers, and is constantly expanding its product line to strive for full coverage of power tool categories. Among them, star models such as the 5401 brushless electric hammer and the 2903 brushless angle grinder have been well received by users after long-term market testing.