{"product_id":"masterforce-20v-to-milwaukee-18v-battery-adapter","title":"Masterforce 20V to Milwaukee 18V Battery Adapter","description":"\u003cp\u003eUse your Masterforce 20V batteries on Milwaukee M18 cordless tools, without buying into a second battery platform. Built with an injection-molded ABS battery interface, a 3D-printed ABS tool socket for a close fit, and pure copper contacts. Fewer battery systems in the workshop, on the bench or in the van, and no extra chargers to find room for.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSKU\u003c\/b\u003e PTA-MAS20-MIL18\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFits this battery\u003c\/b\u003e Masterforce 20V (Lithium-Ion) from Menards\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBattery voltage\u003c\/b\u003e 20V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRuns these tools\u003c\/b\u003e Milwaukee M18 (Lithium-Ion)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTool voltage\u003c\/b\u003e 18V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHousing\u003c\/b\u003e ABS\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTerminals\u003c\/b\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCurrent rating\u003c\/b\u003e 40A continuous (80A peak at 18VDC for up to 2 seconds)720 Watt continuous at 18V nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal wiring\u003c\/b\u003e 5 mm²\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight\u003c\/b\u003e 131 g (4.6 oz \/ 0.29 lb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColour\u003c\/b\u003e Black, Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOperating humidity\u003c\/b\u003e 5–95% RH\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOperating temperature\u003c\/b\u003e -10 °C to 50 °C (14 °F to 122 °F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUSB port\u003c\/b\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat's in the box\u003c\/b\u003e Battery adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWarranty\u003c\/b\u003e 12 months after the date of delivery\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRevision\u003c\/b\u003e Revision 01 (released on May 21, 2026)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy choose this adapter\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSolid copper terminals, so less of the current is lost as heat.\u003c\/li\u003e\n\u003cli\u003e5 mm² internal wiring, rated for 40A continuous with 80A peak at 18VDC for up to 2 seconds, so a high-draw tool is not held back by the adapter.\u003c\/li\u003e\n\u003cli\u003eMade for the Masterforce 20V batteries sold at Menards, so the fit is the one you already own.\u003c\/li\u003e\n\u003cli\u003eCovered by a 12-month warranty from the day it arrives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMasterforce 20V and Milwaukee M18 compatibility\u003c\/h2\u003e\n\u003cp\u003eIt works in one direction only: Masterforce batteries powering Milwaukee tools. For the opposite pairing, see \u003ca href=\"https:\/\/powertoolsadapters.com\/collections\/milwaukee-m18-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259847880945\"\u003eadapters that run on Milwaukee M18 batteries\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eCompatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the \u003ca href=\"https:\/\/powertoolsadapters.com\/collections\/masterforce-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259848306929\"\u003eMasterforce 20V\u003c\/a\u003e platform and that your tool takes \u003ca href=\"https:\/\/powertoolsadapters.com\/collections\/milwaukee-m18-battery-adapters?filter.p.m.version2.tool_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259847880945\"\u003eMilwaukee M18\u003c\/a\u003e batteries.\u003c\/p\u003e\n\u003ch2\u003eImportant charging and safety information\u003c\/h2\u003e\n\u003cp\u003eThis adapter is for powering cordless tools and nothing else. It cannot charge Masterforce or Milwaukee batteries and must never be connected to a charger of any kind. Always take the battery out of the adapter before charging, and charge it on the original charger made for your Masterforce 20V battery.\u003c\/p\u003e\n\u003ch2\u003eBefore you buy\u003c\/h2\u003e\u003cdiv\u003e\n\u003ch3\u003eMilwaukee M18 tools\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\nMilwaukee 2771-20 Transfer Pump: Inside the battery compartment, a small piece of plastic must be trimmed. Will not work with Ryobi battery due to spacing issue.\n\u003ca href=\"https:\/\/power-tools-adapters.myshopify.com\/cdn\/shop\/files\/2771-20_1.jpg?v=12445649599424358032\" target=\"_blank\" rel=\"noopener\"\u003e\nSee photo\n\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\nMilwaukee 2825-20ST Fuel String Trimmer: The black shroud needs to be removed or slightly trimmed.\n\u003ca href=\"https:\/\/power-tools-adapters.myshopify.com\/cdn\/shop\/files\/2825-20ST_1.jpg?v=114320472417683500\" target=\"_blank\" rel=\"noopener\"\u003e\nSee photo\n\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Power Tools Adapters","offers":[{"title":"Default Title","offer_id":51245990215716,"sku":"PTA-MAS20-MIL18","price":43.63,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/5598\/3396\/files\/Masterforce_to_Milwaukee_Battery_Adapter_01.jpg?v=1786429211","url":"https:\/\/www.layerspecdynamics.com\/de\/products\/masterforce-20v-to-milwaukee-18v-battery-adapter","provider":"LayerSpec Dynamics","version":"1.0","type":"link"}