{"product_id":"hqst-100a-mppt-solar-charge-controller-12-48v-bluetooth-lcd-monitoring-lifepo4-protection","title":"HQST 100A MPPT Solar Charge Controller 12–48V — Bluetooth, LCD Monitoring, LiFePO4 Protection","description":"\u003cstrong\u003eHQST 100A MPPT Charge Controller is a high-efficiency, multi-voltage solar charge regulator with Bluetooth monitoring, LCD controls, and protections for LiFePO4 and lead-acid batteries.\u003c\/strong\u003e\n\n\u003cp\u003eDesigned for residential and off-grid solar systems, the HQST 100A MPPT controller combines advanced maximum power point tracking with user-friendly monitoring to squeeze more usable energy from PV arrays. It supports 12V\/24V\/36V\/48V battery banks, offers adjustable battery profiles, and includes temperature-aware safeguards—helpful for protecting lithium iron phosphate (LiFePO4) and various lead-acid chemistries.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this controller increase solar charging efficiency?\u003c\/h3\u003e\n\u003cp\u003eThe HQST 100A uses modern MPPT algorithms to continuously optimize the voltage-to-current conversion from solar panels to batteries, delivering higher harvest than PWM controllers. Peak conversion efficiency reaches about 98.7% with tracking efficiencies up to 99%, reducing wasted generation across changing light conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMPPT tracking adapted to variable irradiance for steady power capture\u003c\/li\u003e\n  \u003cli\u003eSupports wide input ranges for larger PV arrays and higher Voc\u003c\/li\u003e\n  \u003cli\u003eSelectable battery types to match charge profiles for maximum retention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat monitoring and controls can I access from a phone or locally?\u003c\/h3\u003e\n\u003cp\u003eBuilt-in Bluetooth lets you pair the controller with HQST’s mobile apps (ChargePro 2.0 or PVChargePro) to view real-time data and historical logs. The unit’s front LCD and control buttons provide local status, parameter adjustment, and quick diagnostics without a smartphone.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBluetooth connectivity for remote monitoring within about 10 m (33 ft)\u003c\/li\u003e\n  \u003cli\u003eApp stores up to 300 days of operation history for trend review\u003c\/li\u003e\n  \u003cli\u003eOn-device LCD shows key metrics and allows direct parameter changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does it protect batteries, especially LiFePO4 types?\u003c\/h3\u003e\n\u003cp\u003eThe controller includes multiple protections tailored to battery chemistry, including low-temperature cut-off settings for LiFePO4 to prevent charging or discharging at unsafe temperatures. Users can enable or disable low-temp cut-off and can use the controller to revive over-discharged LiFePO4 packs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow-temp charge cut-off below 32°F and discharge cut-off below 5°F for LiFePO4\u003c\/li\u003e\n  \u003cli\u003eManual switch to activate or deactivate low-temperature protections\u003c\/li\u003e\n  \u003cli\u003eSafety suite: overcharge, overcurrent, over-voltage, reverse polarity, overheating protections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I scale the charging current for larger systems?\u003c\/h3\u003e\n\u003cp\u003eIf you need more charging current for a single battery bank, multiple HQST MPPT controllers can run in parallel so they feed the same battery pack. This lets you expand system capacity without reworking the PV array layout.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eParallel support up to nine compatible MPPT controllers for higher aggregate current\u003c\/li\u003e\n  \u003cli\u003eRequires parallel charge cabling (not included) and matching battery voltage settings\u003c\/li\u003e\n  \u003cli\u003eUseful for staged upgrades—add controllers instead of replacing the entire inverter\/charger\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The HQST 100A MPPT Charge Controller is aimed at DIYers, van\/RV and marine users, small off-grid homeowners, and installers who need a robust, expandable controller with modern monitoring. It fits systems that require flexible voltage support (12\/24\/36\/48V), chemistry-specific charging (LiFePO4 and lead-acid variants), and those planning future capacity growth using parallel controllers. Choose this unit if you want high MPPT efficiency, Bluetooth\/LCD oversight, and built-in safety features without complicated setup demands.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this controller support LiFePO4 batteries?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It supports LiFePO4 with selectable low-temperature cut-off and can revive over-discharged LiFePO4 cells.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I monitor it remotely with my phone?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Built-in Bluetooth pairs with ChargePro 2.0 or PVChargePro apps for real-time and 300-day history monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HQST","offers":[{"title":"Default Title","offer_id":56801359036756,"sku":"B0DD3LHNDS","price":280.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/hqst-100a-controller-front-panel.jpg?v=1786740733","url":"https:\/\/gardenluxe.co.uk\/products\/hqst-100a-mppt-solar-charge-controller-12-48v-bluetooth-lcd-monitoring-lifepo4-protection","provider":"Gardenluxe Uk","version":"1.0","type":"link"}