{"title":"PWM","description":"\u003cp\u003ePWM solar charge controllers remain the simple, budget-friendly choice for a single 12V panel maintaining a boat battery. The \u003ca href=\"https:\/\/innospo.com\/products\/30a-12v-24v-pwm-solar-charge-controller\"\u003e30A 12V\/24V PWM Solar Charge Controller\u003c\/a\u003e handles trickle and maintenance charging with straightforward two-stage regulation — no app, no configuration overhead.\u003c\/p\u003e\n\u003cp\u003eIf you plan to run larger panels or need cold-weather charging efficiency, compare it with our \u003ca href=\"https:\/\/innospo.com\/collections\/mppt\"\u003eMPPT controllers\u003c\/a\u003e, or start from the \u003ca href=\"https:\/\/innospo.com\/pages\/marine-power-buying-guide\"\u003eMarine Power System Buying Guide\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"30a-12v-24v-pwm-solar-charge-controller","title":"30A 12V-24V PWM Solar Charge Controller","description":"\u003cp\u003eThe Innospo 30A 12V-24V PWM Solar Charge Controller regulates solar input for 12V and 24V battery banks at up to 30 A, with an Anderson connector for tool-free panel hookup, an LCD screen with LED indicators and three-stage charging. It comes in two versions: a standard unit with on-device controls, and a Bluetooth version that adds phone-side monitoring.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eNon-Bluetooth version\u003c\/th\u003e\n\u003cth\u003eBluetooth version\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRated charge current\u003c\/td\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e12 V \/ 24 V\u003c\/td\u003e\n\u003ctd\u003e12 V \/ 24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCharging technology\u003c\/td\u003e\n\u003ctd\u003ePWM, 3-stage (Boost, Equalize, Float)\u003c\/td\u003e\n\u003ctd\u003ePWM, 3-stage (Boost, Equalize, Float)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eLCD screen + LED indicator\u003c\/td\u003e\n\u003ctd\u003eLCD screen + LED indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMonitoring\u003c\/td\u003e\n\u003ctd\u003eOn-device\u003c\/td\u003e\n\u003ctd\u003eOn-device + Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePanel connection\u003c\/td\u003e\n\u003ctd\u003eAnderson connector, plug and play\u003c\/td\u003e\n\u003ctd\u003eAnderson connector, plug and play\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBattery types\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eFlooded, SLA, GEL, AGM, LiFePO4, ternary lithium, LTO\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeather resistance\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eWaterproof for outdoor use\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhy PWM, and when it is enough\u003c\/h2\u003e\n\u003cp\u003ePWM regulation clamps the panel to battery voltage, which makes it a simple, low-loss match when the panel's nominal voltage already matches the bank — the common case with portable folding panels and RV kits. If the array runs well above battery voltage, or Shade and low light are everyday conditions, an MPPT controller recovers more energy; our \u003ca href=\"\/blogs\/news\/mppt-vs-pwm-solar-charge-controller-which-is-best-for-your-boat\"\u003eMPPT vs PWM comparison\u003c\/a\u003e walks through that decision.\u003c\/p\u003e\n\n\u003ch2\u003eNon-Bluetooth or Bluetooth version?\u003c\/h2\u003e\n\u003cp\u003eBoth versions charge identically and show the same values on the LCD. Choose the Bluetooth version if the controller mounts somewhere you would rather not crawl to — a battery locker lid or an under-seat compartment — since charge status can then be read from a phone. Choose the standard version if the unit sits in plain view and budget matters more than remote reading.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation steps\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConnect the battery side first, then the solar input via the Anderson connector.\u003c\/li\u003e\n  \u003cli\u003eSet battery type and system voltage from the controller menu before the first full charge.\u003c\/li\u003e\n  \u003cli\u003eLet the controller run a complete cycle and confirm the LCD passes through boost and into float.\u003c\/li\u003e\n  \u003cli\u003eOn the Bluetooth version, pair the phone app and confirm the same readings before mounting the unit in its final spot.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eDoes it work on both 12V and 24V systems?\u003c\/h3\u003e\n\u003cp\u003eYes. Both versions are rated for 12V and 24V battery banks at up to 30 A of charge current.\u003c\/p\u003e\n\u003ch3\u003eWhich batteries can it charge?\u003c\/h3\u003e\n\u003cp\u003eFlooded lead-acid, SLA, GEL, AGM, LiFePO4, ternary lithium and LTO — the type is selected in the controller menu.\u003c\/p\u003e\n\u003ch3\u003eWhat do the three charging stages do?\u003c\/h3\u003e\n\u003cp\u003eBoost restores bulk charge at higher current, Equalize balances the cells periodically, and Float holds the battery at a maintenance voltage once full, which protects it on boats that sit between trips.\u003c\/p\u003e\n\u003ch3\u003eCan it stay outside?\u003c\/h3\u003e\n\u003cp\u003eIt is waterproof and built for outdoor use, but the terminals should still sit where water cannot pool around them.\u003c\/p\u003e\n\n\u003ch2\u003eRelated guides\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/news\/mppt-vs-pwm-solar-charge-controller-which-is-best-for-your-boat\"\u003eMPPT vs PWM: which controller suits your boat\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/news\/mppt-solar-controller-not-charging-boat-troubleshooting\"\u003eMPPT controller not charging: troubleshooting steps\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10a-12v-mppt-solar-charge-controller\"\u003eInnospo 10A 12V MPPT controller\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10a-20a-12v-24v-smart-mppt-solar-charge-controller\"\u003eInnospo 10A\/20A Smart MPPT controller\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/pwm\"\u003eAll Innospo PWM solar charge controllers\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Innospo","offers":[{"title":"Non-Bluetooth version","offer_id":45859714105479,"sku":"C.05.01.001.00056","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Bluetooth version","offer_id":45859714138247,"sku":"C.05.01.001.00057","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/7387\/6103\/files\/01_INNOSPO.png?v=1791993063"}],"url":"https:\/\/innospo.com\/collections\/pwm.oembed","provider":"Innospo","version":"1.0","type":"link"}