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★ Compatibility: Our batteries are compatible with major brands like bl1860b, bl1850, bl1840, bl1850b-2, bl1845, bl1830, bl1820, bl1815, and LXT-400 series. If you have a different brand, feel free to contact us for more information.
★ 21 Volt Lithium Battery: Battery voltage: 21V, capacity: 4000mAh, type: lithium ion, made of 10 high-quality lithium ion cells. This battery provides stable capacity and a consistent output.
★ Charger: Supports a universal AC input voltage of 100-240V. It comes with a 1A power adapter and a US plug. The LED indicator helps you easily monitor the charging process.
★ Safety: Equipped with a multi-protect safety system, this battery includes overload protection, overheat protection, and over-discharge protection.
★ Battery Care: To protect your battery, do not charge it for more than 6 hours. Before first use, ensure the battery is fully charged. Avoid overnight charging, as it can severely damage the battery life.