{"product_id":"wattstunde®-40a-90v-mppt-solar-laderegler-wlr-bt-40-90-mppt-12-24v","title":"WATTSTUNDE® 40 A 90 V MPPT Solar Charge Controller WLR-BT 40.90 MPPT 12 \/ 24 V","description":"\u003ch2\u003e MPPT solar charge controller with LCD and Bluetooth function from WATTSTUNDE®\u003c\/h2\u003e\n\n\n \u003ch3\u003eGenerate your own power with the advanced MPPT solar charge controller from WATTSTUNDE® – perfect for your motorhome, caravan, boat and any off-grid solar system!\u003c\/h3\u003e\n\n\n\u003cp\u003e The MPPT solar charge controller from WATTSTUNDE® is the central element of any solar system, connecting PV modules, loads, and solar batteries. With innovative MPPT (Maximum Power Point Tracking) technology, the variable voltage of the solar modules is converted into a constant voltage to charge your battery efficiently and gently. Even under less than optimal lighting conditions, energy generation remains efficient.\u003c\/p\u003e\n\n\n\u003cp\u003e The WLR-BT 40.90 from the MPPT series impresses with its new LCD display, which clearly presents a wide range of information and measurements. Get precise information about the battery charge level or load current, giving you a comprehensive overview of your solar system at all times. This allows you to check your system at any time and make adjustments as needed.\u003c\/p\u003e\n\n\n \u003cp\u003eReal-time display of energy flows and a statistics function for viewing the total solar yield make the charge controller particularly user-friendly.\u003c\/p\u003e\n\n\n\u003cp\u003e The charge controller charges all common battery types (lead-acid, AGM, gel, and lithium) quickly and gently. The integrated undervoltage protection prevents dangerous deep discharges, while the intelligent load cutoff disconnects the connected devices when the battery's charge level reaches critical levels.\u003c\/p\u003e\n\n\n\u003cp\u003e Maximize your solar yields with the smart MPPT technology of the WLR 40.90 from WATTSTUNDE®. This technology optimizes the operating point of the solar modules several times per second and efficiently converts excess voltage into increased charging current. This results in shorter charging times and maximum power output – with up to 30% higher yield compared to conventional PWM charge controllers.\u003c\/p\u003e\n\n\n \u003cp\u003eEven under unfavorable lighting conditions, such as overcast skies or diffused light, the MPPT charge controller achieves impressive energy yields. Automatic detection of the system voltage (12 or 24 V) and an external temperature sensor that adjusts the charging voltage to the ambient temperature ensure optimized charging performance. Overload and overcharge protection, as well as reverse current protection for the solar modules, provide additional security for your system.\u003c\/p\u003e\n\n\n\u003cp\u003e \u003cstrong\u003eHighlights:\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\u003cp\u003e View data live on your smartphone! With a Bluetooth-enabled smartphone, you can view a wealth of data in real time. Use the wireless connection to easily set up, monitor, and update your controller—all conveniently from your Apple or Android smartphone, tablet, or other device. \u003c\/p\u003e\n\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003chr\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003ctable style=\"background: rgb(223, 224, 223);\" width=\"100%\"\u003e\n\n\u003ctbody\u003e\n\n\u003ctr style=\"height: 40px;\"\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e \u003cspan style=\"font-size: 24px;\"\u003e\u003cstrong\u003eTechnical data\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e \u003cspan style=\"font-size: 24px;\"\u003e\u003cstrong\u003eWLR-BT 40.90 MPPT\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 18px;\"\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e Max. input current DC\u003c\/td\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e 40 A\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\t\t\t \u003ctd style=\"background: rgb(251, 251, 251);\"\u003eMax. open circuit voltage PV\u003c\/td\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e 90 V DC (25 °C)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e Max. solar power\u003c\/td\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e 520 Wp (12 V) \/ 1040 W (24 V) \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 18px;\"\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e Battery type\u003c\/td\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e AGM, Gel, Lead-acid, Lithium (Lithium only 12 V)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e Nominal battery voltage\u003c\/td\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e 12\/24 V (automatic detection) \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 18px;\"\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e Charging technology\u003c\/td\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e MPPT\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 18px;\"\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e communication\u003c\/td\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e Bluetooth or RS485\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e Deep discharge protection voltage 12 V \/ 24 V\u003c\/td\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e 10.8V - 11.8V \/ 21.6V - 23.6V\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 18px;\"\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e Temperature compensation\u003c\/td\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e integrated\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e Display\/operation\u003c\/td\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e LCD display with backlight\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e Weight\u003c\/td\u003e\n\n\u003ctd style=\"height: 18px;\"\u003e 1300 g \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 18px;\"\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e Mass\u003c\/td\u003e\n\n\u003ctd style=\"background: rgb(251, 251, 251);\"\u003e 196.5 x 136.6 x 97.1 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n","brand":"WATTSTUNDE","offers":[{"title":"Default Title","offer_id":55777958789465,"sku":"300-10141","price":128.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/9436\/8857\/files\/wattstunde-2065jpg-324204.jpg?v=1761404919","url":"https:\/\/b2bshop.wattstunde.de\/en\/products\/wattstunde%c2%ae-40a-90v-mppt-solar-laderegler-wlr-bt-40-90-mppt-12-24v","provider":"Wattstunde | B2B Shop","version":"1.0","type":"link"}