{"title":"Ryobi 36V\/40V Battery Adapters","description":"\u003cp\u003eRyobi's 36V\/40V is the outdoor line — mowers, trimmers, blowers and chainsaws — where the pack is a large share of what you paid and most people own exactly one. It sits alongside 18V ONE+ rather than replacing it.\u003c\/p\u003e\n\n\u003cp\u003e%ADAPTERS% here, running both ways: a 36V\/40V pack driving another brand's tool, or another brand's battery running a 36V\/40V one. Worth knowing before you order — 36V\/40V is a separate system from Ryobi's own 18V ONE+, and the two do not interchange however alike the packs look. The adapter you need is chosen by platform, not by brand. Pick a direction below, or use the finder if you know both ends of the pairing.\u003c\/p\u003e\n","products":[{"product_id":"ridgid-18v-to-ryobi-40v-battery-adapter","title":"RIDGID 18V to Ryobi 36V\/40V Battery Adapter","description":"\u003cp\u003eUse your RIDGID 18V batteries on Ryobi 40V cordless tools, without buying into a second battery platform. Your RIDGID 18V battery runs at 18V and the tool at 40V. The converter holds it steady at the tool’s level, so the tool behaves as it would on its own battery. The 3D-printed ABS housing keeps the fit precise, and pure copper contacts keep current delivery steady. It is a cost-effective way to get more from the batteries you have, with no second charger to maintain.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSKU\u003c\/b\u003e PTA-RID18-RYO40\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFits this battery\u003c\/b\u003e RIDGID 18V (Lithium-Ion) from Home Depot\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 Ryobi 40V (Lithium-Ion)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTool voltage\u003c\/b\u003e 40V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHousing\u003c\/b\u003e ABS (3D)\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 60A continuous (100A peak at 18VDC for up to 2 seconds)2160 Watt continuous at 36V nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight\u003c\/b\u003e 224 g (7.9 oz \/ 0.49 lb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColour\u003c\/b\u003e 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\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 December 2, 2023)\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\u003eRated for 60A continuous with 100A 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 RIDGID 18V batteries sold at Home Depot, 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\u003eRIDGID 18V and Ryobi 40V compatibility\u003c\/h2\u003e\n\u003cp\u003eIt works in one direction only: RIDGID batteries powering Ryobi tools. For the opposite pairing, see \u003ca href=\"https:\/\/powertoolsadapters.com\/pages\/battery-adapters-finder?battery=Ryobi+40V\"\u003eadapters that run on Ryobi 40V 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\/ridgid-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259847946481\"\u003eRIDGID 18V\u003c\/a\u003e platform and that your tool takes Ryobi 40V\nbatteries.\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 RIDGID or Ryobi 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 RIDGID 18V battery.\u003c\/p\u003e\n\u003ch2\u003eBefore you buy\u003c\/h2\u003e\u003cp\u003eUse a battery of at least 3 Ah — 4 Ah or more is better. A higher-voltage tool draws harder on the battery, and a small one can sag until its own protection cuts out before it is empty.\u003c\/p\u003e\u003cdiv\u003e\n\u003ch3\u003eRIDGID 18V batteries\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\nNot compatible with RIDGID Red 18V (plumbing) batteries \/ tools\n\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Power Tools Adapters","offers":[{"title":"Default Title","offer_id":44110872740081,"sku":"PTA-RID18-RYO40","price":94.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/8055\/4184\/files\/Ridgid_18V_to_Ryobi_40V_Battery_Adapter_09.jpg?v=1760722858"},{"product_id":"ryobi-40v-to-milwaukee-18v-battery-adapter","title":"Ryobi 36V\/40V to Milwaukee 18V Battery Adapter","description":"\u003cp\u003eUse your Ryobi 36V\/40V batteries on Milwaukee M18 cordless tools, without buying into a second battery platform. Your Ryobi 36V\/40V battery is 40V and a Milwaukee M18 tool expects 18V. The converter holds the output at the tool’s level for as long as the battery lasts. Constructed from durable molded ABS with pure copper contacts, for a secure fit and dependable current transfer. 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-RYO40-MIL18\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFits this battery\u003c\/b\u003e Ryobi 36V\/40V (Lithium-Ion)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBattery voltage\u003c\/b\u003e 36V\/40V\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 (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 60A continuous (100A peak at 18VDC for up to 2 seconds)1080 Watt continuous at 18V nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal wiring\u003c\/b\u003e 6 mm²\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight\u003c\/b\u003e 147 g (5.2 oz \/ 0.32 lb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColour\u003c\/b\u003e 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\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 9, 2026)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy choose this adapter\u003c\/h2\u003e\n\u003cul\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\u003e6 mm² internal wiring, rated for 60A continuous with 100A 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\u003eRyobi 36V\/40V and Milwaukee M18 compatibility\u003c\/h2\u003e\n\u003cp\u003eIt works in one direction only: Ryobi 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\/ryobi-36v-40v-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259849715953\"\u003eRyobi 36V\/40V\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 Ryobi 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 Ryobi 36V\/40V 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":48533141815537,"sku":"PTA-RYO40-MIL18","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/8055\/4184\/files\/PhotoNotAvailable_6744dd2c-ace8-4c61-9cc9-a0afba50ef7e.jpg?v=1783650426"},{"product_id":"ryobi-40v-to-dewalt-20v-battery-adapter","title":"Ryobi 36V\/40V to DeWalt 20V Battery Adapter","description":"\u003cp\u003eUse your Ryobi 36V\/40V batteries on DeWalt 20V MAX cordless tools, without buying into a second battery platform. 40V in, 20V out: the converter brings it down to what a fully charged 20V battery reads, rather than passing the higher voltage through. Built with a durable injection-molded ABS housing and pure copper contacts for steady current delivery. This helps you get the most out of your existing battery system while avoiding the cost of another set of batteries and chargers.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSKU\u003c\/b\u003e PTA-RYO40-DWM20\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFits this battery\u003c\/b\u003e Ryobi 36V\/40V (Lithium-Ion)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBattery voltage\u003c\/b\u003e 36V\/40V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRuns these tools\u003c\/b\u003e DeWalt 20V MAX (Lithium-Ion)\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 60A continuous (100A peak at 18VDC for up to 2 seconds)1080 Watt continuous at 18V nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInternal wiring\u003c\/b\u003e 6 mm²\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight\u003c\/b\u003e 147 g (5.2 oz \/ 0.32 lb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColour\u003c\/b\u003e 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\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 9, 2026)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy choose this adapter\u003c\/h2\u003e\n\u003cul\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\u003e6 mm² internal wiring, rated for 60A continuous with 100A 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\u003eRyobi 36V\/40V and DeWalt 20V MAX compatibility\u003c\/h2\u003e\n\u003cp\u003eIt works in one direction only: Ryobi batteries powering DeWalt tools. For the opposite pairing, see \u003ca href=\"https:\/\/powertoolsadapters.com\/collections\/dewalt-20v-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259847848177\"\u003eadapters that run on DeWalt 20V MAX 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\/ryobi-36v-40v-battery-adapters?filter.p.m.version2.battery_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259849715953\"\u003eRyobi 36V\/40V\u003c\/a\u003e platform and that your tool takes \u003ca href=\"https:\/\/powertoolsadapters.com\/collections\/dewalt-20v-battery-adapters?filter.p.m.version2.tool_brand=gid%3A%2F%2Fshopify%2FMetaobject%2F259847848177\"\u003eDeWalt 20V MAX\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 Ryobi or DeWalt 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 Ryobi 36V\/40V battery.\u003c\/p\u003e\n\u003ch2\u003eBefore you buy\u003c\/h2\u003e\u003cdiv\u003e\n\u003ch3\u003eDeWalt 20V MAX tools\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\nDCV581H Wet-Dry Vacuum: Not compatible\n\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Power Tools Adapters","offers":[{"title":"Default Title","offer_id":48533142077681,"sku":"PTA-RYO40-DWM20","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/8055\/4184\/files\/PhotoNotAvailable_6744dd2c-ace8-4c61-9cc9-a0afba50ef7e.jpg?v=1783650426"}],"url":"https:\/\/dk.powertoolsadapters.com\/collections\/ryobi-36v-40v-battery-adapters.oembed","provider":"Power Tools Adapters","version":"1.0","type":"link"}