{"product_id":"bosch-blue-18v-to-milwaukee-12v-battery-adapter","title":"Bosch (Blue) 18V to Milwaukee 12V Battery Adapter","description":"\u003cp\u003eUse your Bosch 18V GBA (Blue) batteries on Milwaukee M12 cordless tools, without buying into a second battery platform. 18V in, 12V out: the converter brings it down to what a fully charged 12V battery reads, rather than passing the higher voltage through. The molded ABS housing keeps it light and hard-wearing, and pure copper contacts keep current delivery steady. It removes the need to keep separate batteries for different platforms, which saves money and simplifies the workflow. It also carries battery protection electronics (BMS) inside.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSKU\u003c\/b\u003e PTA-BOSB18-MIL12\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFits this battery\u003c\/b\u003e Bosch 18V GBA (Blue) (Lithium-Ion)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBattery voltage\u003c\/b\u003e 18V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRuns these tools\u003c\/b\u003e Milwaukee M12 (Lithium-Ion)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTool voltage\u003c\/b\u003e 12V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHousing\u003c\/b\u003e ABS (Injected)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDC-DC converter\u003c\/b\u003e Yes — 18V to 12V\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)432 Watt continuous at 10.8V nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight\u003c\/b\u003e 143 g (5.0 oz \/ 0.32 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\u003eBuilt-in BMS protection\u003c\/b\u003e Yes\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 August 11, 2026)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy choose this adapter\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA Battery Management System inside the adapter cuts power before the battery is drained too far — protection your battery may not have on its own.\u003c\/li\u003e\n\u003cli\u003eInjection-moulded ABS, not 3D printed — no layer lines to split under load.\u003c\/li\u003e\n\u003cli\u003eSolid copper terminals, so less of the current is lost as heat.\u003c\/li\u003e\n\u003cli\u003eRated 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\u003eCovered by a 12-month warranty from the day it arrives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBosch 18V GBA (Blue) and Milwaukee M12 compatibility\u003c\/h2\u003e\n\u003cp\u003eIt works in one direction only: Bosch batteries powering Milwaukee tools. For the opposite pairing, see \u003ca href=\"https:\/\/powertoolsadapters.com\/collections\/milwaukee-m12-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259848995057\" data-pta-action=\"reverse_click\" data-pta-surface=\"reverse_longform\" data-pta-label=\"Milwaukee M12\"\u003eadapters that run on Milwaukee M12 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\/bosch-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259848077553\"\u003eBosch 18V GBA (Blue)\u003c\/a\u003e platform and that your tool takes \u003ca href=\"https:\/\/powertoolsadapters.com\/collections\/milwaukee-m12-battery-adapters?filter.p.m.version2.tool_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259848995057\"\u003eMilwaukee M12\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 Bosch 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 Bosch 18V GBA (Blue) battery.\u003c\/p\u003e","brand":"Power Tools Adapters","offers":[{"title":"Default Title","offer_id":48541287809265,"sku":"PTA-BOSB18-MIL12","price":46.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/8055\/4184\/files\/PhotoNotAvailable_66fd69b7-8940-478e-90f5-81a23e178c81.jpg?v=1786453934","url":"https:\/\/powertoolsadapters.ca\/products\/bosch-blue-18v-to-milwaukee-12v-battery-adapter","provider":"Power Tools Adapters","version":"1.0","type":"link"}