If your solar panel is only cracked, you can try to repair it with silicone sealant or epoxy. These materials can be found at your local hardware store.
[pdf] How to Troubleshoot and Repair Your MPPT Solar Charge Controller1. Visual Inspection Inspect the controller’s enclosure for any physical damage or signs of overheating. . 2. Voltage and Current Measurements Use a multimeter to measure the solar panel’s voltage and current output. . 3. Component Testing . 4. Software Update and Reset . 5. Professional Assistance
[pdf] Equipped with an advanced Battery Management System (BMS), the ES 48100 ensures comprehensive protection, optimizing battery health and extending the cycle life to over 6000 cycles.
[pdf] An energy storage PCB is a printed circuit board specifically designed to control, monitor, and regulate energy flow in battery-based systems. It integrates power electronics, protection devices, and communication interfaces to ensure system stability and battery longevity.
[pdf] In a boost converter (step-up converter), energy storage capacitors (often referred to as output capacitors) play a crucial role. Their primary function is to smooth the output voltage, ensuring that the load receives a stable and continuous power supply.
[pdf] To be more accurate, a typical open circuit voltage of a solar cell is 0.58 volts (at 77°F or 25°C). All the PV cells in all solar panels have the same 0.58V voltage.
[pdf] 
