{"product_id":"20a-mppt-solar-charge-controller-12v-24v","title":"Sunvivae 20A MPPT Solar Charge Controller for 12V\/24V Batteries with LCD \u0026 Dual USB","description":"\u003cstyle\u003e\n.sv-mppt20{--o:#f26a21;--ink:#17212b;--muted:#61707b;--pale:#f5f7f8;--line:#dfe5e8;font-family:Arial,Helvetica,sans-serif;color:var(--ink);line-height:1.6;max-width:1180px;margin:auto}.sv-mppt20 *{box-sizing:border-box}.sv-mppt20 img{display:block;width:100%;height:auto;border-radius:18px}.sv-mppt20 h2,.sv-mppt20 h3,.sv-mppt20 p{margin-top:0}.sv-mppt20 h2{font-size:clamp(29px,4vw,46px);line-height:1.12;margin-bottom:14px}.sv-mppt20 h3{font-size:21px;line-height:1.25;margin-bottom:8px}.sv-mppt20 .orange{color:var(--o)}.sv-mppt20 .eyebrow{color:var(--o);font-size:13px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;margin-bottom:9px}.sv-mppt20 .lead{font-size:18px;color:var(--muted)}.sv-mppt20 .hero{text-align:center;padding:30px 0 48px}.sv-mppt20 .hero .lead{max-width:790px;margin-left:auto;margin-right:auto}.sv-mppt20 .chips{display:flex;flex-wrap:wrap;justify-content:center;gap:9px;margin-top:22px}.sv-mppt20 .chip{background:#fff2ea;border:1px solid #ffd3ba;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700}.sv-mppt20 .section{padding:52px 0}.sv-mppt20 .center{text-align:center;max-width:810px;margin:0 auto 28px}.sv-mppt20 .band{background:var(--ink);color:#fff;border-radius:20px;padding:27px 18px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.sv-mppt20 .stat{padding:0 16px;border-right:1px solid #3b4650}.sv-mppt20 .stat:last-child{border:0}.sv-mppt20 .stat strong{display:block;color:#ff8b4b;font-size:24px;line-height:1.2}.sv-mppt20 .stat span{font-size:13px;color:#d9e0e5}.sv-mppt20 .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:19px}.sv-mppt20 .card{background:var(--pale);border:1px solid var(--line);border-radius:18px;padding:24px}.sv-mppt20 .card p{color:var(--muted);margin-bottom:0}.sv-mppt20 .split{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}.sv-mppt20 .panel{background:var(--pale);border-radius:20px;padding:29px}.sv-mppt20 ul{padding-left:20px}.sv-mppt20 li{margin:7px 0}.sv-mppt20 .media{margin-top:28px}.sv-mppt20 .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin:23px 0}.sv-mppt20 .step{border:1px solid var(--line);border-radius:15px;padding:19px;background:#fff}.sv-mppt20 .step b{display:block;color:var(--o);font-size:12px;letter-spacing:.8px;margin-bottom:4px}.sv-mppt20 .warning{background:#fff7e8;border-left:4px solid #f0a020;border-radius:10px;padding:15px 17px;margin-top:18px}.sv-mppt20 .danger{background:#fff0ed;border-left:4px solid #d94a32;border-radius:10px;padding:15px 17px;margin-top:18px}.sv-mppt20 table{width:100%;border-collapse:collapse;background:#fff;border-radius:15px;overflow:hidden}.sv-mppt20 th,.sv-mppt20 td{text-align:left;border-bottom:1px solid var(--line);padding:11px 14px}.sv-mppt20 th{width:47%;color:var(--muted)}.sv-mppt20 .small{font-size:12px;color:var(--muted)}.sv-mppt20 details{border-top:1px solid var(--line);padding:15px 0}.sv-mppt20 summary{font-weight:700;cursor:pointer}.sv-mppt20 details p{color:var(--muted);padding-top:8px;margin-bottom:0}.sv-mppt20 .cta{margin:50px 0 15px;padding:38px;background:linear-gradient(135deg,#202b35,#0d151c);color:#fff;text-align:center;border-radius:22px}.sv-mppt20 .btn{display:inline-block;background:var(--o);color:#fff!important;text-decoration:none;font-weight:800;padding:12px 23px;border-radius:999px}\n@media(max-width:760px){.sv-mppt20 .section{padding:37px 0}.sv-mppt20 .band{grid-template-columns:1fr 1fr}.sv-mppt20 .stat:nth-child(2){border-right:0}.sv-mppt20 .grid3,.sv-mppt20 .split,.sv-mppt20 .steps{grid-template-columns:1fr}.sv-mppt20 h2{font-size:30px}.sv-mppt20 .lead{font-size:16px}.sv-mppt20 .panel{padding:21px}}\n\u003c\/style\u003e\n\u003cdiv class=\"sv-mppt20\"\u003e\n\u003csection class=\"hero\"\u003e\n\u003cp class=\"eyebrow\"\u003e20A MPPT Solar Charge Controller\u003c\/p\u003e\n\u003ch2\u003eHarvest More Solar Power for \u003cspan class=\"orange\"\u003e12V \u0026amp; 24V\u003c\/span\u003e Battery Systems\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eThe Sunvivae 1220 combines true maximum power point tracking, multi-battery charging profiles, LCD monitoring and programmable DC-load control in one compact off-grid controller.\u003c\/p\u003e\n\u003cdiv class=\"chips\"\u003e\n\u003cspan class=\"chip\"\u003e20A Rated Charging\u003c\/span\u003e\u003cspan class=\"chip\"\u003e12V \/ 24V Auto Recognition\u003c\/span\u003e\u003cspan class=\"chip\"\u003eUnder 60V PV Voc\u003c\/span\u003e\u003cspan class=\"chip\"\u003eUp to 260W \/ 520W PV\u003c\/span\u003e\u003cspan class=\"chip\"\u003eTwo 5V \/ 1A USB Ports\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"band\"\u003e\n\u003cdiv class=\"stat\"\u003e\n\u003cstrong\u003e≥99.5%\u003c\/strong\u003e\u003cspan\u003emaximum-point tracking efficiency\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stat\"\u003e\n\u003cstrong\u003eUp to 97%\u003c\/strong\u003e\u003cspan\u003epeak conversion efficiency\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stat\"\u003e\n\u003cstrong\u003e20A\u003c\/strong\u003e\u003cspan\u003erated charge and load current\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stat\"\u003e\n\u003cstrong\u003eIP30\u003c\/strong\u003e\u003cspan\u003eindoor enclosure protection class\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003cdiv class=\"center\"\u003e\n\u003cp class=\"eyebrow\"\u003eMaximum Power Point Tracking\u003c\/p\u003e\n\u003ch2\u003eMake Better Use of Available Sunlight\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eMPPT technology continuously searches for the solar array's maximum power point and converts the available PV power into controlled battery charging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid3\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eFast Tracking\u003c\/h3\u003e\n\u003cp\u003eTracks changing solar conditions while maintaining maximum-point tracking efficiency of at least 99.5%.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eHigh Conversion\u003c\/h3\u003e\n\u003cp\u003eQuality power components provide maximum conversion efficiency up to 97% under suitable operating conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eAutomatic Voltage\u003c\/h3\u003e\n\u003cp\u003eRecognizes compatible 12V or 24V battery systems after the battery is connected first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"media\"\u003e\u003cimg src=\"https:\/\/www.sunvivae.com\/cdn\/shop\/files\/2_fd4b9fde-b987-4031-8101-54d25d609507.png?v=1787979927\u0026amp;width=1400\" alt=\"20A MPPT solar charge controller harvesting power for an off-grid RV system\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section split\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"eyebrow\"\u003eMulti-Battery Support\u003c\/p\u003e\n\u003ch2\u003eCharge the Battery You Actually Use\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eSelectable profiles support common lead-acid and lithium battery configurations, with custom modes available for applications requiring verified manual settings.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGEL lead-acid\u003c\/li\u003e\n\u003cli\u003eSealed lead-acid\u003c\/li\u003e\n\u003cli\u003eFlooded lead-acid\u003c\/li\u003e\n\u003cli\u003e4S and 5S LiFePO4\u003c\/li\u003e\n\u003cli\u003e3S and 4S lithium-ion\u003c\/li\u003e\n\u003cli\u003eCustom lead-acid and lithium modes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"small\"\u003eAlways confirm charge voltages with the battery manufacturer. Lithium batteries should include a compatible BMS. Set system voltage and battery type before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg src=\"https:\/\/www.sunvivae.com\/cdn\/shop\/files\/4_9b9c3747-1a49-486d-9b05-5f663e4f3758.png?v=1787979928\u0026amp;width=1200\" alt=\"Compatible GEL sealed flooded LiFePO4 and lithium battery profiles\" loading=\"lazy\"\u003e\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003cdiv class=\"center\"\u003e\n\u003cp class=\"eyebrow\"\u003eLCD Monitoring\u003c\/p\u003e\n\u003ch2\u003eSee Charging and System Status\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eThe LCD provides access to battery voltage, battery temperature, charging and discharging current, accumulated amp-hours, PV voltage, load mode and system settings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"media\"\u003e\u003cimg src=\"https:\/\/www.sunvivae.com\/cdn\/shop\/files\/5_ba041da7-61c3-4d89-8ac2-9896b09d41ff.png?v=1787979928\u0026amp;width=1400\" alt=\"LCD monitoring display and controls on POW-Keeper1220 MPPT controller\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003cdiv class=\"center\"\u003e\n\u003cp class=\"eyebrow\"\u003eCorrect Installation Sequence\u003c\/p\u003e\n\u003ch2\u003eBattery First. Solar Second. Load Last.\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eCorrect wiring order allows the controller to power on, recognize system voltage and apply the selected charging parameters safely.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"steps\"\u003e\n\u003cdiv class=\"step\"\u003e\n\u003cb\u003eSTEP 1\u003c\/b\u003e\u003cstrong\u003eOpen Breakers\u003c\/strong\u003e\u003cbr\u003eEnsure the PV and battery cables are not energized.\u003c\/div\u003e\n\u003cdiv class=\"step\"\u003e\n\u003cb\u003eSTEP 2\u003c\/b\u003e\u003cstrong\u003eConnect Battery\u003c\/strong\u003e\u003cbr\u003eObserve polarity, then close the battery breaker.\u003c\/div\u003e\n\u003cdiv class=\"step\"\u003e\n\u003cb\u003eSTEP 3\u003c\/b\u003e\u003cstrong\u003eConnect Solar\u003c\/strong\u003e\u003cbr\u003eVerify PV Voc, then close the PV breaker.\u003c\/div\u003e\n\u003cdiv class=\"step\"\u003e\n\u003cb\u003eSTEP 4\u003c\/b\u003e\u003cstrong\u003eConnect DC Load\u003c\/strong\u003e\u003cbr\u003eOptional and only within the load-output limits.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"danger\"\u003e\n\u003cstrong\u003eDo not connect an inverter to the LOAD terminals.\u003c\/strong\u003e Connect an inverter directly to the battery with correctly sized cable and circuit protection. Loose terminals can overheat; tighten all connections securely.\u003c\/div\u003e\n\u003cdiv class=\"media\"\u003e\u003cimg src=\"https:\/\/www.sunvivae.com\/cdn\/shop\/files\/7_cb12ce73-eb0c-4be1-9c78-8ad475b1c946.png?v=1787979928\u0026amp;width=1400\" alt=\"Battery first solar second and optional DC load wiring for MPPT controller\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003cdiv class=\"center\"\u003e\n\u003cp class=\"eyebrow\"\u003eFlexible Load Automation\u003c\/p\u003e\n\u003ch2\u003eControl Compatible DC Loads Day and Night\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eProgrammable operating modes support manual DC-load control, dusk-to-dawn operation, timed lighting and reverse light control.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid3\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eManual Mode\u003c\/h3\u003e\n\u003cp\u003eTurn the compatible DC load on or off manually from the controller.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eLight Control\u003c\/h3\u003e\n\u003cp\u003eAutomatically switch the load according to detected daylight conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eLight + Timer\u003c\/h3\u003e\n\u003cp\u003eRun the load for a configured period around night operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warning\"\u003e\n\u003cstrong\u003eLoad-output limit:\u003c\/strong\u003e the rated load current is 20A. Motors, pumps and other inductive loads can draw high startup current; confirm surge requirements before connecting them to LOAD.\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section split\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"eyebrow\"\u003eVerified 20A Model Data\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cp class=\"lead\"\u003eThese values apply to the Sunvivae1220 20A model. Specifications for the 30A and 40A models are different.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eSunvivae 1220\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eController type\u003c\/th\u003e\n\u003ctd\u003eMPPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated charge current\u003c\/th\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated load current\u003c\/th\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem voltage\u003c\/th\u003e\n\u003ctd\u003e12V \/ 24V auto recognition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery voltage range\u003c\/th\u003e\n\u003ctd\u003e8–32V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum PV open-circuit voltage\u003c\/th\u003e\n\u003ctd\u003eLess than 60V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum PV input power\u003c\/th\u003e\n\u003ctd\u003e260W at 12V \/ 520W at 24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUSB output\u003c\/th\u003e\n\u003ctd\u003e2 × 5V \/ 1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStatic consumption\u003c\/th\u003e\n\u003ctd\u003e≤50mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating temperature\u003c\/th\u003e\n\u003ctd\u003e−20°C to +55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking humidity\u003c\/th\u003e\n\u003ctd\u003e≤90%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProtection class\u003c\/th\u003e\n\u003ctd\u003eIP30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrounding type\u003c\/th\u003e\n\u003ctd\u003eCommon positive \/ positive grounded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"small\" style=\"margin-top: 10px;\"\u003ePV voltage rises in cold weather. Calculate the array's cold-condition Voc and keep it safely below the controller's 60V maximum. Do not design a system that reaches the absolute limit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003cdiv class=\"center\"\u003e\n\u003cp class=\"eyebrow\"\u003eInstallation Environment\u003c\/p\u003e\n\u003ch2\u003eKeep It Cool, Dry and Ventilated\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid3\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eMount Vertically\u003c\/h3\u003e\n\u003cp\u003eInstall with the ports facing downward and leave clearance around the enclosure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eAvoid Heat \u0026amp; Sun\u003c\/h3\u003e\n\u003cp\u003eKeep the controller away from direct sunlight and mount it on a non-combustible surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eIndoor Protection\u003c\/h3\u003e\n\u003cp\u003eIP30 is not waterproof. Protect the controller from rain, spray, condensation and conductive dust.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003cdiv class=\"center\"\u003e\n\u003cp class=\"eyebrow\"\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003ch2\u003eBefore You Connect\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan it work with two 100W flexible solar panels?\u003c\/summary\u003e\n\u003cp\u003eYes. The previously specified two-panel set is best wired in series for this MPPT controller: approximately Voc 37.2V, Vmp 31.8V, Isc 6.6A and 200W. This provides suitable charging headroom for either a 12V or 24V battery system while remaining below the controller's verified power and voltage limits. Cold-weather Voc must still be calculated and kept safely below 60V. Parallel wiring is not suitable for charging a 24V battery and may provide insufficient voltage headroom near the upper charging voltage of a 12V battery.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy must the battery be connected first?\u003c\/summary\u003e\n\u003cp\u003eThe battery powers the controller and allows it to recognize 12V or 24V system voltage. After battery type and parameters are confirmed, connect the PV array.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I connect a 12V or 24V inverter to LOAD?\u003c\/summary\u003e\n\u003cp\u003eNo. Connect an inverter directly to the battery through appropriate cables, fuse or breaker, following the inverter and battery manufacturers' instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs it waterproof?\u003c\/summary\u003e\n\u003cp\u003eNo. Its enclosure is rated IP30. Install it indoors in a dry, ventilated location.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the USB ports provide 2.4A?\u003c\/summary\u003e\n\u003cp\u003eThe verified manual specifies two 5V\/1A USB ports. The page does not advertise 2.4A USB output.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection class=\"cta\"\u003e\n\u003ch2\u003eQuestions Before You Build?\u003c\/h2\u003e\n\u003cp\u003eSend us your panel Voc\/Isc, array wiring, battery voltage and battery chemistry. We will help you check the essential compatibility points.\u003c\/p\u003e\n\u003ca class=\"btn\" href=\"https:\/\/www.sunvivae.com\/pages\/contact-us\"\u003eContact Sunvivae\u003c\/a\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Sunvivae","offers":[{"title":"Default Title","offer_id":44959847743581,"sku":null,"price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5888\/2397\/files\/sunvivae-20a-mppt-solar-charge-controller-for-12v24v-batteries-with-lcd-dual-usb-5200433.png?v=1789885515","url":"https:\/\/www.sunvivae.com\/products\/20a-mppt-solar-charge-controller-12v-24v","provider":"Sunvivae","version":"1.0","type":"link"}