1、Safe and Reliable: The battery is highly compatible with the battery adapter and will not fall off or shake when used, making it safe and reliable. 2、High Efficiency: The battery adapter is made of reliable ABS material, strong and durable, with high efficiency in energising each metal contact. 3、Easy to Use: This battery adapter is simple and easy to use and requires no specialist skills. Simply insert the 18V lithium battery into the converter and convert it to a for Bosch 18V PBA lithium battery. 4、Wide Adaptability: This battery adaptor is a widely adaptable version of the 18V BL1815 BL1815B BL1820 BL1820B BL1830 BL1830B BL1840 BL1840B BL1850 BL1850B BL1860 BL1860B BL1845 BL1890 BL1890B lithium battery. 5、Well Made: This battery adapter has a secure design and is well made to fit your battery, allowing easy installation and locking of the battery.