DIY Charge any cordless tool/drill battery without a charger using Turnigy balance charger - YouTube
Battery Adapter for Dewalt/Milwaukee 20V/18V to Milwaukee M12 12V Li-ion Battery | eBay
Adapter for Lidl Parkside X20V to DeWalt 18/20V Li-Ion/Nickel Battery Adapter Compatible with DeWalt Tools Cordless Drill Series - AliExpress
AEG Battery Adapter to Black and Decker – Power Tools Adapters
Power Tool Battery Adapter,Lithium Battery Converter,Suitable for Makita 18V Lithium Battery Converted to Black & Decker Stanley Lithium Battery Tools : Amazon.co.uk: DIY & Tools
Badaptor - DeWalt to Makita 18V Battery Adapter | DIY at B&Q
Adapter For Ferrex 20V Battery Adapter to For Einhell 18V 20V Cordless Tools | eBay
Bosch 18v Nicad Battery to Bosch Lithium Battery Adapter - Etsy UK
Turn Cordless Tool Batteries Into USB Chargers | Hackaday