{"product_id":"mppt-dual-battery-charge-controller-12-24v-10a-20a-30a","title":"EPEVER DuoRacer MPPT Dual Battery Solar Charge Controller 10A\/20A\/30A 12\/24V, RS485, IP33","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eEPEVER DuoRacer series is an MPPT dual battery solar charge controller designed to charge two batteries (BATT1 and BATT2) in the same solar system. It supports multiple BATT1 battery types including Sealed, Gel, Flooded, LiFePO4, and Li-NiCoMn. The controller automatically recognizes the start battery (BATT2) system voltage and trickle-charges it when conditions are satisfied, making it suitable for RV, camper, caravan, boat, and trailer electrical systems.\u003c\/p\u003e\u003cp\u003eThe DuoRacer controller uses an advanced MPPT control algorithm to track the maximum power point (MPP) of the PV array and maximize energy harvest under varying conditions. Compared with PWM charging, MPPT energy utilization is increased by 20% to 30%. When there is no manual operation for a long time and charging conditions cannot be reached (PV \u0026lt; 5V), the unit switches to low-power mode to reduce loss and battery power waste. System parameters can be displayed and set via LED\/LCD, or via the MT11 remote meter (accessory).\u003c\/p\u003e\u003cp\u003eAn AES control signal for a car refrigerator is integrated to supply surplus solar power and reduce energy waste. The enclosure is rated IP33 (dust and water spray protection) and includes multiple protections such as battery overcharge protection, over-discharge protection, and reverse connection protection for PV and battery.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMPPT technology with ultra-fast tracking speed; tracking efficiency not less than 99.5% (guaranteed).\u003c\/li\u003e\n\u003cli\u003eAdvanced MPPT algorithm to minimize MPP loss rate and loss time.\u003c\/li\u003e\n\u003cli\u003eWide MPP operating voltage range to improve PV module utilization.\u003c\/li\u003e\n\u003cli\u003eAuto control function of charging power and charging current limitation (BATT1).\u003c\/li\u003e\n\u003cli\u003eDigital circuit control with adaptive three-stage charging mode to enhance BATT1 life.\u003c\/li\u003e\n\u003cli\u003eBATT1 type can be set via LED\/LCD.\u003c\/li\u003e\n\u003cli\u003eLow-power mode when charging conditions are not satisfied (PV \u0026lt; 5V) and there is no manual operation for a long time.\u003c\/li\u003e\n\u003cli\u003e100% charging and discharging within the specified operating environmental temperature range.\u003c\/li\u003e\n\u003cli\u003eLED and LCD display versions available (DDB: LED; DDS: LCD).\u003c\/li\u003e\n\u003cli\u003eAES control signal port for car refrigerator power management.\u003c\/li\u003e\n\u003cli\u003eStandard Modbus protocol and RS485 (5V\/200mA) communication port for system expansion.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor installation support, accessory selection (e.g., remote meter\/communication adapters), or compatibility questions, contact \u003ca href=\"https:\/\/tsolar.top\/\"\u003ehttps:\/\/tsolar.top\/\u003c\/a\u003e or service@tsolar.top.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eDR1206N-DDB \/ DR1206N-DDS\u003c\/th\u003e\n\u003cth\u003eDR2210N-DDB \/ DR2210N-DDS\u003c\/th\u003e\n\u003cth\u003eDR3210N-DDB \/ DR3210N-DDS\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBATT1 rated voltage\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"text-align:center;\"\u003e12\/24VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated charge current\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e10A\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e20A\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e30A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery input voltage range\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"text-align:center;\"\u003e8.5~32V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. PV open circuit voltage\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e60V (at min. operating environment temp.); 46V (at 25 C environment temp.)\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"text-align:center;\"\u003e100V (at min. operating environment temp.); 92V (at 25 C environment temp.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPP voltage range\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e(Battery Voltage + 2V)~36V\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"text-align:center;\"\u003e(Battery Voltage + 2V)~72V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated charge power\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e130W\/12V; 260W\/24V\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e260W\/12V; 520W\/24V\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e390W\/12V; 780W\/24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. conversion efficiency\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e97.40%\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e97.50%\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e98%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull load efficiency\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e97%\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e96%\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelf-consumption\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e12mA\/12V; 8mA\/24V; 4mA\/12V; 3mA\/24V (low-power mode)\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"text-align:center;\"\u003e26mA\/12V; 15mA\/24V; 19mA\/12V; 10mA\/24V (low-power mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature compensate coefficient\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"text-align:center;\"\u003e-3mV\/ C\/2V (default)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrounding\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"text-align:center;\"\u003eCommon negative\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon negative (parameter)\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"text-align:center;\"\u003e13.8V\/12V; 27.6V\/24V (default)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBATT2 charge return voltage\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"text-align:center;\"\u003e13V\/12V; 26V\/24V (default)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAES signal port\u003c\/td\u003e\n\u003ctd colspan=\"3\" rowspan=\"2\" style=\"text-align:center;\"\u003e5VDC \/ Max. 200mA (3.81-4P)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRS485 com. port\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCom. baud rate\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"text-align:center;\"\u003e115200 (default)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLCD backlight time\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"text-align:center;\"\u003e60S (default)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eMechanical Parameters\u003c\/h3\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eDR1206N-DDB \/ DR1206N-DDS\u003c\/th\u003e\n\u003cth\u003eDR2210N-DDB \/ DR2210N-DDS\u003c\/th\u003e\n\u003cth\u003eDR3210N-DDB \/ DR3210N-DDS\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimension\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e227.2 x 143 x 58.1mm\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e243.7 x 158 x 63mm\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e247.2 x 165 x 68.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting dimension\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e160 x 134mm\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e180 x 149mm\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e180 x 156mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting hole size\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"text-align:center;\"\u003ephi 5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e12AWG\/4mm2 (BATT1); 12AWG\/4mm2 (BATT2)\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"text-align:center;\"\u003e6AWG\/16mm2 (BATT1); 12AWG\/4mm2 (BATT2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended cable size\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e12AWG\/4mm2 (BATT1); 12AWG\/4mm2 (BATT2)\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e10AWG\/6mm2 (BATT1); 12AWG\/4mm2 (BATT2)\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e8AWG\/6mm2 (BATT1); 12AWG\/4mm2 (BATT2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e0.8kg\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e1.1kg\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e1.4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eEnvironmental Parameters\u003c\/h3\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eDR1206\/2210N-DDB; DR1206\/2210N-DDS\u003c\/th\u003e\n\u003cth\u003eDR3210N-DDB; DR3210N-DDS\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking environment temperature (100% input and output)\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e-20 C to +50 C (DDS); -30 C to +50 C (DDB)\u003c\/td\u003e\n\u003ctd style=\"text-align:center;\"\u003e-20 C to +45 C (DDS); -30 C to +45 C (DDB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temperature range\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"text-align:center;\"\u003e-30 C to +80 C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative humidity\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"text-align:center;\"\u003e\u0026lt;=95%, N.C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIP33: 3-protection against solid objects (protected against solid objects over 2.5mm); 3-protected against sprays to 60 B0 from the vertical.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePollution degree\u003c\/td\u003e\n\u003ctd colspan=\"2\" style=\"text-align:center;\"\u003ePD2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e Temperature compensate coefficient is zero and not changeable when the battery type is lithium battery.\u003c\/li\u003e\n\u003cli\u003e If the AES signal port and RS485 communication port are used at the same time, total current must be no greater than 200mA.\u003c\/li\u003e\n\u003cli\u003e Communication baud rate can only be set via PC software.\u003c\/li\u003e\n\u003cli\u003e LCD backlight time can only be set via PC software; setting range is 0~999S, and 0s means the LCD is on all the time. DDB: DuoRacer Display Basic (LED); DDS: DuoRacer Display Standard (LCD).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDual-battery solar charging systems (house battery + start battery) for RVs, campers, caravans, boats, and trailers\u003c\/li\u003e\n\u003cli\u003e12V\/24V off-grid PV charging where common-negative grounding is required\u003c\/li\u003e\n\u003cli\u003eSystems requiring Modbus\/RS485 communications and an AES signal output\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eVideo\u003c\/h2\u003e\u003ciframe allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" frameborder=\"0\" height=\"182\" src=\"https:\/\/www.youtube.com\/embed\/SAs3BTVZYTE\" title=\"YouTube video player\" width=\"300\"\u003e\u003c\/iframe\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"EPEVER DuoRacer MPPT Dual Battery Solar Charge Controller （10A \/ 20A \/ 30A ） 12V 24V Auto - Negative Ground Solar Controller for RV Camper Caravan Boat Trailer fit for Lithium, Sealed, Gel, Flooded Battery\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/EPEVER-DuoRacer-MPPT-Dual-Battery-Solar-Charge-Controller.jpg?v=1776912790\"\u003e\u003cp\u003eEPEVER DuoRacer MPPT dual-battery charge controllers support RS485 accessories like the MT11 display, eBox adapters, and optional WiFi monitoring.\u003c\/p\u003e\n\u003cimg alt=\"EPEVER DuoRacer MPPT Dual Battery Solar Charge Controller （10A \/ 20A \/ 30A ） 12V 24V Auto - Negative Ground Solar Controller for RV Camper Caravan Boat Trailer fit for Lithium, Sealed, Gel, Flooded Battery\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/EPEVER-DuoRacer-MPPT-Dual-Battery-Solar-Charge-Controller.avif?v=1776912796\"\u003e\u003cp\u003eThe DuoRacer MPPT controller is wired between a roof solar panel and two vehicle batteries, with an MT11 meter connected for monitoring.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"EPEVER","offers":[{"title":"10A","offer_id":52208693903634,"sku":"17001-1","price":119.0,"currency_code":"USD","in_stock":true},{"title":"20A","offer_id":52208693936402,"sku":"17001-2","price":139.0,"currency_code":"USD","in_stock":true},{"title":"30A","offer_id":52208693969170,"sku":"17001-3","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0863\/2860\/6994\/files\/03ba7cf520edcccba9f56557c53d8343.png?v=1776762901","url":"https:\/\/tsolar.top\/products\/mppt-dual-battery-charge-controller-12-24v-10a-20a-30a","provider":"TSolar","version":"1.0","type":"link"}