Info for this article 【For Makita 18V Battery】: Suitable for Makita 18V Battery: BL1850 BL1840 BL1830 BL1820 BL1815. The product is installed on for Makita 18V battery and Work on for Bosch 12V GPA power tools.(Note:PBA Series not apply) 【on For Bosch Professional 12V System Tools】: The MT18BS12 battery adapter is installed on the for Makita 18V battery and works in for Bosch Professional 12V System power tools. for 12V system cordless drill driver, impact drill driver sabre saw angle grinder, drill bit, cordless screwdriver, working lamp, fan, LED lamp etc. 【Battery Change Function】: With an MT18BS12 adapter, two brands of batteries and tools can be used together, avoiding the purchase of separate expensive batteries and extending the life of the tools. 【Safety and Protection】:Our creative battery adapter converters for Makita 18V battery on for Bosch 12V Professional tools made of eco-friendly ABS housings that are wear-resistant, moisture-resistant, fall-proof and corrosion-resistant, thus ensuring the life of the plug; the built-in protective plate and anti-discharge protection system effectively protect the battery from over-discharge. 【Easy to Install】:The MT18BS12 battery adapter for Bosch 12V tools is designed for easy battery installation, with a black button for quick battery removal and replacement and a custom-fit adapter that holds the tool and battery tightly together without loosening or slipping, so you can focus on your work. Converter bottom: Suitable for Makita 18V Battery: BL1850 BL1840 BL1830 BL1820 BL1815,etc. Converter top: Work on for Bosch 12V GPA power tools. Note： This converter does not support for Charger