High-efficiency 20 A MPPT solar charge controller, 12/24 V, up to 100 V PV input — designed for reliable charging of 12/24 V battery systems.

• MPPT technology: advanced Maximum Power Point Tracking for maximum power harvest; works with panel voltages up to 100 V and supports 260W (12 V) or 520W (24 V) input while achieving >95% conversion efficiency.
• Full system protection: comprehensive electronic protections including reverse current prevention at night (battery to panel), over-charge cut-off, deep-discharge protection, solar panel over-voltage, overload, short circuit and reverse polarity plus self-diagnostic fault reporting.
• Lithium battery charging: compatible with lithium chemistries when the lithium charging programme is selected via PC software or the mobile app.
• Supported battery types: selectable charging profiles for Sealed/AGM, GEL, Flooded lead-acid and LiFePO4 batteries (selectable via software/app).
• Advanced system monitoring: automatically recognises 12/24 V battery systems (battery should be connected before the solar panel); built-in LCD shows real-time voltages and currents (panel and load), state of charge and cumulative charge/discharge energy; manual battery type selection and programmable load timers.
• Multiple connectivity options: advanced communications with RS485/RJ45 port; can connect to a remote meter (MT50) with LCD and be monitored/programmed via PC or mobile app for future expandability.
• Controller specifications & protections: Max charge current: 20 A; current limiting function (20 A); common negative ground; self-consumption <12 mA; industry-grade protection features to preserve system reliability and ensure high conversion efficiency.
• Operating range & environment: working temperature −25°C to +50°C (−13°F to +122°F); high conversion efficiency improves system performance, especially when panel VOC is much higher than battery voltage.
• Mechanical details: size 22 x 15.4 x 5.2 cm (8.66 x 6.06 x 2.Ø 5 in); mounting dimension 17 x 14.5 cm (6.69 x 5.71 in); weight 0.94 kg (2.07 lb); multiple mounting holes (5 mm diameter) for easy installation.
• Documentation & support: user manual and product documents for the Photonic Universe High-efficiency 20 A MPPT controller are available to download; programmable and serviceable via the supplied communication options (PC software, mobile app and MT50).

For best results, connect the battery to the controller first, then the solar panel; consult the downloadable user manual for wiring diagrams, charging profiles and app/PC setup instructions.