{"product_id":"enerdrive-mppt-solar-controller-lcd-display-40a-12-24v-en43540","title":"Enerdrive - MPPT Solar Controller with LCD Display - 40A 12\/24V - EN43540","description":"\u003cp\u003eThe \u003cstrong\u003eEnerdrive EN43540\u003c\/strong\u003e is a 40A MPPT solar charge controller with a built-in \u003cstrong\u003eLCD display\u003c\/strong\u003e - so you can read system status at the unit without pulling out a phone. It auto-detects 12V or 24V battery systems and suits both lead-acid and lithium.\u003c\/p\u003e\n\n\u003cp\u003eAt 40A it will run up to \u003cstrong\u003e600W of panels on a 12V system\u003c\/strong\u003e or 1200W on 24V, which puts it in canopy, camper-trailer and caravan territory rather than a single-panel setup. The MPPT tracking algorithm recognises and holds the true maximum power point even under partial shading, where a cheaper PWM regulator simply gives up.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e40A charge output\u003c\/strong\u003e, 12\/24V auto-detect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD display\u003c\/strong\u003e with real-time energy statistics\u003c\/li\u003e\n\u003cli\u003eMPPT tracking efficiency up to \u003cstrong\u003e99.5%\u003c\/strong\u003e; DC\/DC transfer efficiency up to \u003cstrong\u003e98.6%\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAccurate recognition and tracking of \u003cstrong\u003emulti-peak\u003c\/strong\u003e maximum power point (useful under partial shading)\u003c\/li\u003e\n\u003cli\u003eSupports \u003cstrong\u003elead-acid and lithium\u003c\/strong\u003e batteries\u003c\/li\u003e\n\u003cli\u003eAutomatic power reduction over temperature\u003c\/li\u003e\n\u003cli\u003eMultiple load work modes\u003c\/li\u003e\n\u003cli\u003eComprehensive electronic protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP33\u003c\/strong\u003e ingress protection - mount it somewhere dry and protected\u003c\/li\u003e\n\u003cli\u003eRS485 comms port included for future applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCE certified\u003c\/strong\u003e - LVD EN\/IEC62109, EMC EN61000-6-1\/3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 year warranty\u003c\/strong\u003e plus lifetime Australian technical support\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWorth knowing before you install\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 12\/24V auto-select does \u003cstrong\u003enot\u003c\/strong\u003e operate when a lithium battery is connected - on a lithium system the battery voltage must be set manually. This is a footnote in Enerdrive's own specification and most listings leave it out, but it is the difference between a system that works on the first go and a callback.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFull specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNominal voltage: \u003cstrong\u003e12\/24VDC auto-select\u003c\/strong\u003e (manual selection required on lithium)\u003c\/li\u003e\n\u003cli\u003eBattery voltage range: \u003cstrong\u003e8 - 32V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax battery current output: \u003cstrong\u003e40A\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax load current output: \u003cstrong\u003e40A\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax PV open-circuit voltage: \u003cstrong\u003e100V at minimum operating temperature \/ 92V at 25 degrees C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPPT voltage range: \u003cstrong\u003ebattery voltage + 2V, up to 72V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax PV array recommended: \u003cstrong\u003e600W at 12V \/ 1200W at 24V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax PV array allowed: \u003cstrong\u003e720W at 12V \/ 1440W at 24V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax efficiency: \u003cstrong\u003e98.6%\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSelf consumption: \u003cstrong\u003e30mA or less at 12V \/ 16mA or less at 24V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGrounding: \u003cstrong\u003ecommon negative\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eComms: \u003cstrong\u003eRS485, RJ45, 5VDC 200mA\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperating temperature: \u003cstrong\u003e-25C to +50C\u003c\/strong\u003e (power reduction from 81C internal)\u003c\/li\u003e\n\u003cli\u003eIngress rating: \u003cstrong\u003eIP33\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUnit dimensions: \u003cstrong\u003e255 x 185 x 67.8 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacked carton: 305 x 205 x 105 mm\u003c\/strong\u003e · Packed weight: \u003cstrong\u003e1.97 kg\u003c\/strong\u003e (measured, not estimated)\u003c\/li\u003e\n\u003cli\u003eMounting holes: \u003cstrong\u003e200 x 176 mm, 5 mm diameter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax cable size: \u003cstrong\u003e6 AWG (13.2 mm sq)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSKU: \u003cstrong\u003eEN43540\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy the PV voltage figure is quoted twice:\u003c\/strong\u003e panel open-circuit voltage \u003cem\u003erises\u003c\/em\u003e as panels get cold, which is exactly when an oversized array can overshoot and damage a controller. Size your string against the \u003cstrong\u003e92V at 25C\u003c\/strong\u003e figure and you have headroom for a cold morning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv itemscope itemtype=\"https:\/\/schema.org\/FAQPage\"\u003e\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch4 itemprop=\"name\"\u003eHow many solar panels can I run into the EN43540?\u003c\/h4\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\u003cp\u003eEnerdrive recommend up to 600W of panels on a 12V system or 1200W on 24V, with an absolute ceiling of 720W and 1440W. The limit that matters most is open-circuit voltage - see the next question.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch4 itemprop=\"name\"\u003eWhat is the maximum panel voltage?\u003c\/h4\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\u003cp\u003e100V at minimum operating temperature, or 92V at 25 degrees C. Size your string against the 92V figure, because panel open-circuit voltage rises as panels get cold - which is exactly when an oversized array can overshoot and damage the controller.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch4 itemprop=\"name\"\u003eDoes the 12V and 24V auto-select work with a lithium battery?\u003c\/h4\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\u003cp\u003eNo. On a lithium system the battery voltage has to be set manually. The auto-select only operates on lead-acid. This is a footnote in Enerdrive's own specification and it is the most common reason one of these appears not to charge correctly on a first install.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch4 itemprop=\"name\"\u003eWhere can I mount it?\u003c\/h4\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\u003cp\u003eSomewhere dry and protected. At IP33 it is not sealed against water or dust, so it belongs inside a canopy, cabin or van - not in an engine bay and not anywhere exposed to weather.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch4 itemprop=\"name\"\u003eHow big is the box and what does it weigh for shipping?\u003c\/h4\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\u003cp\u003eThe carton measures 305 x 205 x 105 mm and weighs 1.97 kg packed. The controller itself is smaller at 255 x 185 x 67.8 mm. These are measured off the actual box, not estimated, so freight quotes and pickup planning are accurate.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\"\u003e\n\u003ch4 itemprop=\"name\"\u003eShould I choose the 20A or the 40A?\u003c\/h4\u003e\n\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\u003cp\u003eThe 20A EN43520 suits up to 300W of panels at 12V. The 40A EN43540 doubles that to 600W at 12V. If your array is at or near 300W today and you may add panels later, the 40A is the one that will not need replacing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eRunning a smaller array? See the \u003ca href=\"\/products\/enerdrive-mppt-solar-controller-w-display-20a-12-24v-en43520\"\u003eEnerdrive EN43520 20A MPPT controller\u003c\/a\u003e, or browse the full \u003ca href=\"\/collections\/enerdrive\"\u003eEnerdrive 12V range\u003c\/a\u003e. Prefer Bluetooth and a phone app over an on-unit screen? Compare the \u003ca href=\"\/collections\/victron-smartsolar-mppt-charge-controllers\"\u003eVictron SmartSolar MPPT range\u003c\/a\u003e.\u003c\/p\u003e","brand":"Enerdrive","offers":[{"title":"Default Title","offer_id":46548801913028,"sku":"EN43540","price":309.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2517\/4562\/files\/MPPTSolarController12V-24V40A-ENERDRIVE-02295.jpg?v=1787543214","url":"https:\/\/www.raingersupplyco.com.au\/products\/enerdrive-mppt-solar-controller-lcd-display-40a-12-24v-en43540","provider":"Rainger Supply Co","version":"1.0","type":"link"}