{"product_id":"bauer-20v-to-hercules-20v-battery-adapter","title":"Bauer 20V to Hercules 20V Battery Adapter (with BMS, Vacuum Pump Compatible)","description":"\u003cp\u003eUse your Bauer 20V batteries on Hercules 20V cordless tools, without buying into a second battery platform. Power passes straight through: Bauer 20V and Hercules 20V share the same 20V rating. The molded ABS housing keeps it light and hard-wearing, and pure copper contacts keep current delivery steady. A practical way to extend the value of the Bauer 20V batteries you already have. 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-BAU20-HER20\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFits this battery\u003c\/b\u003e Bauer 20V (Lithium-Ion) from Harbor Freight\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 Hercules 20V (Lithium-Ion) from Harbor Freight\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTool voltage\u003c\/b\u003e 20V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHousing\u003c\/b\u003e ABS (Injected)\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 134 g (4.7 oz \/ 0.3 lb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColour\u003c\/b\u003e Yellow, Black\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 October 12, 2025)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy choose this adapter\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eYour Bauer 20V battery and Hercules 20V tools run at the same voltage, so the adapter changes the fitting rather than converting anything.\u003c\/li\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\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 Bauer 20V batteries sold at Harbor Freight, 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\u003eBauer 20V and Hercules 20V compatibility\u003c\/h2\u003e\n\u003cp\u003eIt works in one direction only: Bauer batteries powering Hercules tools. For the opposite pairing, see \u003ca href=\"https:\/\/powertoolsadapters.com\/collections\/hercules-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259848241393\"\u003eadapters that run on Hercules 20V 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\/bauer-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259848208625\"\u003eBauer 20V\u003c\/a\u003e platform and that your tool takes \u003ca href=\"https:\/\/powertoolsadapters.com\/collections\/hercules-battery-adapters?filter.p.m.version2.tool_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259848241393\"\u003eHercules 20V\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 Bauer or Hercules 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 Bauer 20V battery.\u003c\/p\u003e\n\u003ch2\u003eBefore you buy\u003c\/h2\u003e\u003cdiv\u003e\n\u003ch3\u003eHercules 20V tools\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\nHercules Heat Gun: Compatible only with a high-capacity battery of 5Ah or more. It can be operated for short periods of approximately 30 seconds at a time. We are currently working to improve compatibility.\n\u003c\/li\u003e\n\u003cli\u003e\nHercules Band Saw: Not currently compatible. There is no known fix at this time.\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Power Tools Adapters","offers":[{"title":"Default Title","offer_id":51246000635940,"sku":"PTA-BAU20-HER20","price":44.87,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/5598\/3396\/files\/Bauer_to_Hercules_Battery_Adapter_01.jpg?v=1786429422","url":"https:\/\/www.layerspecdynamics.com\/products\/bauer-20v-to-hercules-20v-battery-adapter","provider":"LayerSpec Dynamics","version":"1.0","type":"link"}