Attention: 1. The adapter cannot be used to charge the battery of a power tool, and the adapter cannot be plugged into any charger. If you need to charge the power tool battery, use the original battery charger; 2. For a long time don't use, please separate from the battery, use dry batteries, not wet. Adapter Function: JFQWLE 18V tools adapter can compatible with Bauer 20V slider lithium battery to make them apply to for bosch 18V lithium-Ion cordless tools, with this adapter converter can let you enjoy the benefits of extended lithium ion battery operation time on existing 18V tools instruments. Well Compatible: The bottom of 20V adapter can compatible with bauer 20v hyper max lithium batteries; Converter top can compatible with bosch 18V lithium cordless power tools. After insert for bauer-20v battery, this adapter can replacement for bosch 18V lithium-Ion batteries BAT609/G, BAT610G, BAT611, BAT612, BAT618, BAT618G, BAT619, BAT619G, BAT620, BAT622, etc. [PLEASE be careful, this adapter NOT SUITABLE for Bosch PSR 18 LI-2, PSB 18 LI-2, PSB 18 LI-2H, PSM 18 LI, PSR 18 LI-2, PSR 18 LI-2H, PST 18 LI, UNEO MAXXH, Uneo Maxx Tools Model] Reliable & Convenient: The replacement for bosch 18v lithium battery adapter is made of PC+ABS material, solid and durable, longer service life. Not 3D printing, Professional compact design and easy installation. Small size and light weight, convenient to carry and store. Size about 4.3x2.76x1.87inch. Responsible Service: If customers have any questions or encounter any problems while using this bos-ch 18v tool adapter converter, please contact us proactively. We will reply promptly during working hours and do our best to solve your problem. Features: 1. This adapter can compatible with bauer 20v hyper max lithium battery to make them work with for bosch 18V lithium-Ion cordless tools, with this converter can let you enjoy the benefits of extended lithium ion battery operation time on existing 18V tools instruments. 2. The bottom of 20V adapter can compatible with bauer 20v hyper max lithium batteries; Converter top can compatible with bosch 18V lithium cordless power tools. After insert for bauer-20v battery, this adapter can replacement for bosch 18V lithium-Ion batteries Notes: Adapter Can NOT be used for power tool battery charging, it NOT fit into any chargers when adapter with battery. If you need to charge your power tool batteries, please remove this adapter and use the original battery chargers. Package Content: 1x Apapter (Not include batteries and tools)