{"product_id":"powmr-20a-30a-40a-mppt-solar-charge-controller-max-pv-50v-70v-100v-auto-12v-24v-battery-dual-usb-lcd-display-solar-regulator","title":"PowMr POW-Keeper MPPT Solar Charge Controller 20A\/30A\/40A, 12V\/24V Auto, Dual USB LCD, Max PV 60\/75\/100V","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003ePowMr POW-Keeper1220-30-40 is an MPPT solar charge controller series (20A \/ 30A \/ 40A) for 12V\/24V systems with auto recognition. It supports a battery voltage range of 8V~32V and includes an LCD display, dual USB output, and load\/lighting control functions for solar power systems.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMPPT technology: tracking efficiency not less than 99.5%; peak conversion efficiency up to 97%.\u003c\/li\u003e\n\u003cli\u003e12V\/24V auto recognized; system voltage can be selected from the display interface.\u003c\/li\u003e\n\u003cli\u003eBattery types (selectable): USE (User default), SLD (Sealed), FLD (Flooded), GEL, LFE (LiFePO4), LI (Lithium \/ Li(NiCoMn)O2). For lithium batteries, manual setting is required.\u003c\/li\u003e\n\u003cli\u003eDisplay interface supports viewing parameters such as total charge power, load mode, load disconnect voltage, float voltage, and load reconnect voltage (press “MENU” to view\/change parameters).\u003c\/li\u003e\n\u003cli\u003eLoad working modes: Manual Mode (24H); Solar Light Control Mode (Sunset–Sunrise: Sunset on, Sunrise off); Solar Light + Time control (Sunset on + time + Sunrise off).\u003c\/li\u003e\n\u003cli\u003eProtections listed: reverse current, reverse polarity protection, overload protection, short circuiting, overcharging, over-discharging.\u003c\/li\u003e\n\u003cli\u003eTemperature sensing and compensation coefficient: -4mV\/°C\/2V (25°C).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePowMr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePOW-Keeper1220-30-40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMPPT Solar Charge Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIs Smart Device\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE, FCC, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem rated voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12\/24V Auto recognized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery voltage range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8V~32V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum current options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20A \/ 30A \/ 40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated charge current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20A (20A model) \/ 30A (30A model) \/ 40A (40A model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. open-circuit voltage of PV array\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;60V (20A model) \/ \u0026lt;75V (30A model) \/ \u0026lt;100V (40A model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum input power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n      20A: 260W (12V), 520W (24V)\u003cbr\u003e\n      30A: 390W (12V), 780W (24V)\u003cbr\u003e\n      40A: 520W (12V), 1040W (24V)\n    \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated discharge current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20A (20A model) \/ 20A (30A model) \/ 30A (40A model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUser default, Sealed, Flooded, GEL, LiFePO4, Li(NiCoMn)O2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEqualize charging voltage (12V system)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaintenance-free lead-acid: 14.6V; GEL: 14.2V; Flooded: 14.6V; Duration: 2 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAbsorption charging voltage (12V system)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaintenance-free lead-acid: 14.4V; GEL: No; Flooded: 14.8V; Duration: 2 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFloat charging voltage (12V system)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaintenance-free lead-acid \/ GEL \/ Flooded: 13.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLVR (12V system)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaintenance-free lead-acid \/ GEL \/ Flooded: 12.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLVD (12V system)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaintenance-free lead-acid \/ GEL \/ Flooded: 10.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHVD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLead-acid battery 16V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStatic loss\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤50mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight control voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V\/10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDischarge loop voltage drop\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤0.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLCD temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C~+70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C~+55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-30°C~+80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤90%, no condensation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrounded type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePositive grounded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAperture for installation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eΦ5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Above parameters are in a 12V system at 25°C; values are twice in a 24V system.\u003c\/p\u003e\u003ch2\u003eConnection Notes\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eConnect battery.\u003c\/li\u003e\n\u003cli\u003eConnect load.\u003c\/li\u003e\n\u003cli\u003eConnect PV array.\u003c\/li\u003e\n\u003cli\u003eController powers on after connection.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cul\u003e\n\u003cli\u003eBattery terminal should be installed with insulation, and the installation distance should not exceed 50mm.\u003c\/li\u003e\n\u003cli\u003eThis MPPT series is common positive: controller, PV array, battery, and load positive poles can be grounded at the same time.\u003c\/li\u003e\n\u003cli\u003eIf an inverter or other high starting-current equipment is used, connect the inverter directly to the battery (do not connect it to the controller’s load terminal).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCharger controller, voltage controller, lighting controller\u003c\/li\u003e\n\u003cli\u003eSolar system controller, solar working station\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor setup or compatibility questions, contact service@tsolar.top or visit https:\/\/tsolar.top\/.\u003c\/p\u003e\u003ch2 id=\"details\"\u003eDetails\u003c\/h2\u003e\u003cdiv class=\"details-gallery\"\u003e\n\u003cimg alt=\"PowMr POW-Keeper MPPT Solar Charge Controller 30A with LCD screen and dual USB ports for 12V\/24V systems\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/PowMr-20A-30A-40A-MPPT-Solar-Charge-Controller-Max-PV-50V.jpg?v=1778336807\"\u003e\u003cimg alt=\"LCD interface overview with MENU button and key readouts: system voltage, charge power, load mode, and reconnect\/float settings\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/PowMr-20A-30A-40A-MPPT-Solar-Charge-Controller-Max-PV-50V_6d2c3617-95fe-41eb-af95-b72c9520fccb.jpg?v=1778336817\"\u003e\u003cimg alt=\"Load working modes on PowMr controller: 24H manual, dusk-to-dawn solar light control, and solar light + timer\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/PowMr-20A-30A-40A-MPPT-Solar-Charge-Controller-Max-PV-50V_169e6ac5-a3dc-4162-8504-e542ab60195d.jpg?v=1778336825\"\u003e\u003cimg alt=\"Wiring connection diagram for PV array, battery 12V\/24V, load output, and inverter connection order with fuses\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/PowMr-20A-30A-40A-MPPT-Solar-Charge-Controller-Max-PV-50V_4a31aa26-0f5a-4955-ac15-698fdbbf893b.jpg?v=1778336833\"\u003e\u003cimg alt=\"Selectable battery type options on display: GEL, FLD, SLD, LFE (LiFePO4), USE, and LI lithium profiles\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/PowMr-20A-30A-40A-MPPT-Solar-Charge-Controller-Max-PV-50V_2c7b377b-44da-4550-9f4a-e5e00b298a97.jpg?v=1778336842\"\u003e\u003cimg alt=\"Advanced MPPT technology graphic listing 99.5% tracking efficiency and up to 97% peak conversion efficiency\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/PowMr-20A-30A-40A-MPPT-Solar-Charge-Controller-Max-PV-50V_daa4d688-5a35-4672-b606-2d4cc6ba1849.jpg?v=1778336851\"\u003e\u003cimg alt=\"Built-in protection functions list: reverse current, reverse polarity, overload, short circuit, overcharge, and over-discharge\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/PowMr-20A-30A-40A-MPPT-Solar-Charge-Controller-Max-PV-50V_31fca78f-5b3f-493b-9165-eb568c40dcce.jpg?v=1778336859\"\u003e\u003cimg alt=\"Controller front and heat-sink side view with three load modes: 24H manual, sunset–sunrise, and sunset + timer\" loading=\"lazy\" src=\"https:\/\/tsolar.top\/cdn\/shop\/files\/PowMr-20A-30A-40A-MPPT-Solar-Charge-Controller-Max-PV-50V_8a3a0d3e-7d42-443b-a577-1a2bcbb8846d.jpg?v=1778336866\"\u003e\n\u003c\/div\u003e","brand":"PowMr","offers":[{"title":"20A \/ 12V 24V Auto \/ United States","offer_id":52239854076178,"sku":"1005010708201115-20A-12V 24V Auto-United States","price":41.38,"currency_code":"USD","in_stock":true},{"title":"30A \/ 12V 24V Auto \/ United States","offer_id":52239854108946,"sku":"1005010708201115-30A-12V 24V Auto-United States","price":59.9,"currency_code":"USD","in_stock":true},{"title":"40A \/ 12V 24V Auto \/ United States","offer_id":52239854141714,"sku":"1005010708201115-40A-12V 24V Auto-United States","price":72.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0863\/2860\/6994\/files\/Sb16d6798ce574d9fb2a8ecc64cf58777C.webp?v=1777887156","url":"https:\/\/tsolar.top\/products\/powmr-20a-30a-40a-mppt-solar-charge-controller-max-pv-50v-70v-100v-auto-12v-24v-battery-dual-usb-lcd-display-solar-regulator","provider":"TSolar","version":"1.0","type":"link"}