{"product_id":"renogy-12v-20a-dc-to-dc-battery-charger","title":"Renogy 12V 20A DC to DC Battery Charger","description":"\u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 32px; margin: 0 0 40px;\"\u003e\n\u003cdiv style=\"flex: 2 1 320px; min-width: 0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/9128\/2937\/files\/renogy-12v-20a-battery-to-battery-charger-with-four-terminals-and-a-button.jpg\" alt=\"Renogy 12V 20A battery to battery charger with four terminals and a button\" width=\"1080\" height=\"749\" style=\"display: block; width: 100%; height: auto;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 3 1 320px; min-width: 0; text-wrap: pretty;\"\u003e\n\u003ch2 style=\"margin-top: 0;\"\u003eThe Renogy 12V 20A DC to DC Battery Charger Charges Your House Battery From the Alternator and Protects the Starter Battery\u003c\/h2\u003e\n\u003cp\u003eThe Renogy 12V 20A DC to DC Battery Charger moves power from a vehicle's alternator to a 12V auxiliary battery at up to 20A and 292W. It works with AGM, gel, flooded, sealed lead-acid and lithium iron phosphate batteries, and it has a custom mode for other charge settings.\u003c\/p\u003e\n\u003cp\u003eIt's made for RVs, vans and small boats where a second battery runs your lights, fridge or electronics. Built-in alternator running detection stops charging when the engine is off, so the charger doesn't drain the starter battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003ch3\u003eRenogy 12V 20A DC to DC Battery Charger Features\u003c\/h3\u003e\n\u003ch4\u003eAlternator Running Detection\u003c\/h4\u003e\n\u003cp\u003eCharging continues only while the alternator is running. When the alternator stops, charging stops, which protects the starter battery. Renogy says the charger also adjusts its charging mode instantly at startup.\u003c\/p\u003e\n\u003ch4\u003eWorks With Traditional and Smart Alternators\u003c\/h4\u003e\n\u003cp\u003eRenogy lists an alternator input of 13.2-16.0VDC for a traditional alternator and 12-16.0VDC for a smart alternator (Euro 6). The IGN signal wire is required for smart alternators only, and it's included.\u003c\/p\u003e\n\u003ch4\u003eFive Battery Types and a Custom Mode\u003c\/h4\u003e\n\u003cp\u003eChoose AGM, flooded (FLD), gel, sealed lead-acid (SLD) or lithium iron phosphate (LI) with the Type button. A user mode lets you set your own parameters. For lithium batteries, you can turn lithium battery activation on or off.\u003c\/p\u003e\n\u003ch4\u003eBattery Temperature Sensor Included\u003c\/h4\u003e\n\u003cp\u003eThe 2 m sensor reports battery temperature to the charger, which adjusts its charging parameters. Renogy lists temperature compensation of -3mV\/°C per 2V for non-lithium batteries and none for lithium.\u003c\/p\u003e\n\u003ch4\u003e94% Charging Efficiency and Protections\u003c\/h4\u003e\n\u003cp\u003eRenogy rates charging efficiency at 94%. Protections include reverse polarity, overvoltage, over discharge, overcurrent and over temperature, and the charger adjusts its output in high-temperature conditions.\u003c\/p\u003e\n\u003ch4\u003eCompact, Corrosion-Proof Layout\u003c\/h4\u003e\n\u003cp\u003eThe charger measures 9.31 x 5.17 x 2.36 in. Terminals are spaced apart to reduce short-circuit risk. Renogy calls it corrosion-proof and suited to small boat cabins and humid marine spaces.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003eReal-World Applications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eRV and van house batteries.\u003c\/strong\u003e Charge a 12V lithium or AGM house battery while you drive.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSmall boats.\u003c\/strong\u003e Renogy points to small boat cabins and humid marine environments as a fit for the compact, corrosion-proof case.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicles with smart alternators.\u003c\/strong\u003e Wire the included IGN signal wire so the charger can tell when the engine is running.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003ePractical Comparison\u003c\/h3\u003e\n\u003ch4\u003eDC to DC Charger Versus a Direct Battery Connection\u003c\/h4\u003e\n\u003cp\u003eA direct connection or isolator passes the alternator's voltage straight through. This charger runs its own multi-stage charge profile for the battery type you pick, and it stops charging when the alternator isn't running.\u003c\/p\u003e\n\u003ch4\u003eCharger Only Versus Adding Bluetooth\u003c\/h4\u003e\n\u003cp\u003eThis option is the charger alone. Renogy says communication needs a separate BT-2 Bluetooth module on the communication port, which isn't included here. Without it, you set the battery type with the Type button and read the status lights.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003eBuyer Guidance\u003c\/h3\u003e\n\u003ch4\u003eInstallation and Wiring\u003c\/h4\u003e\n\u003cp\u003eRenogy says to mount the charger horizontally for better venting and heat dissipation, and to place it nearer the service battery. The terminals accept 10-8 AWG wire. Renogy lists a 40A input fuse rating and a 30A output fuse rating. Use the included ring terminals, and have a qualified installer help if you're unsure.\u003c\/p\u003e\n\u003ch4\u003eThis May Be A Good Fit If\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eYou charge a 12V house battery from an alternator\u003c\/li\u003e\n\u003cli\u003eYour vehicle has a smart or traditional alternator\u003c\/li\u003e\n\u003cli\u003eYou use AGM, gel, flooded or lithium batteries\u003c\/li\u003e\n\u003cli\u003eYou want a compact charger for tight spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003ch4\u003eWhat Battery Types Does It Charge?\u003c\/h4\u003e\n\u003cp\u003eBy default it supports 12V AGM, flooded lead-acid, gel, sealed lead-acid and lithium iron phosphate. A custom mode adjusts settings for other needs.\u003c\/p\u003e\n\u003ch4\u003eHow Do I Get Communication and App Monitoring?\u003c\/h4\u003e\n\u003cp\u003eRenogy says you need its BT-2 Bluetooth module on the charger's communication port to connect to the DC Home app. The module isn't part of this option.\u003c\/p\u003e\n\u003ch4\u003eAre There Installation Precautions?\u003c\/h4\u003e\n\u003cp\u003eMount the charger horizontally and close to the service battery, as Renogy advises.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Renogy 12V 20A DC to DC Battery Charger\u003c\/li\u003e\n\u003cli\u003e1 x Battery Temperature Sensor (2 m)\u003c\/li\u003e\n\u003cli\u003e1 x IGN Signal Wire (3 m)\u003c\/li\u003e\n\u003cli\u003e4 x Terminal Rings\u003c\/li\u003e\n\u003cli\u003e1 x User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch3\u003eReliable Alternator Charging for Your House Battery\u003c\/h3\u003e\n\u003cp\u003eThe Renogy 12V 20A DC to DC Battery Charger gives your auxiliary battery a managed charge from the alternator and stops when the engine does. If you'd like help matching it to your battery and wiring, the Outbound Power team is happy to help.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ctable style=\"border-collapse: collapse; max-width: 100%; overflow-x: auto;\" cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\" style=\"background-color: rgb(242, 242, 242); text-align: left; width: 100%;\"\u003e\n\u003ch3\u003eRenogy 12V 20A DC to DC Battery Charger Specifications\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.1489%;\"\u003e\u003cstrong\u003eSystem Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.8511%;\"\u003e12 V to 12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlternator Input Voltage, Traditional\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13.2 to 16.0 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlternator Input Voltage, Smart (Euro 6)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 to 16.0 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Fuse Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eOutput\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Output Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e292 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Fuse Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eCharging\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAGM, Gel, Flooded, Lithium Iron Phosphate, User\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e94%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Compensation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-3 mV\/°C per 2 V (non-lithium); none (lithium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIdle Power Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLess than 15 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrounding\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCommon negative\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReverse polarity, overvoltage, over discharge, overcurrent, over temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE, RoHS, FCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eSize and Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal Wire Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 AWG to 8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9.31 x 5.17 x 2.36 in (236.5 x 131.5 x 60.5 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3 lb (1.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-4°F to 122°F (-25°C to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-4°F to 122°F (-40°C to 85°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0% to 95%, no condensation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Operating Altitude\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3000 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-year material and workmanship warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Renogy","offers":[{"title":"Default Title","offer_id":67614427414777,"sku":"RBC20D1U-US","price":140.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/9128\/2937\/files\/renogy-12v-20a-dc-to-dc-battery-charger-front-view-with-alt-and-bat-terminals-and-status-lights.jpg?v=1793974184","url":"https:\/\/outboundpower.com\/products\/renogy-12v-20a-dc-to-dc-battery-charger","provider":"Outbound Power","version":"1.0","type":"link"}