The paper presents an accurate electrical model of a photovoltaic (PV) module based on the Shockley diode equation, which includes temperature dependencies and series resistance. The model is evaluated using MATLAB for a typical 60W solar panel. The model is used to investigate the variation of maximum power point (MPP) with temperature and insolation levels. The performance of buck and boost maximum power point tracker (MPPT) topologies is compared with a direct connection to a constant voltage (battery) load. The results show that the boost converter has a slight advantage over the buck converter because it can always track the MPP, even under low light conditions. The direct connection is found to be less efficient, especially at low light levels and high temperatures. The study concludes that while the boost converter has theoretical advantages, the practical efficiency gains are minimal, but it remains a better choice due to its ability to always track the MPP.The paper presents an accurate electrical model of a photovoltaic (PV) module based on the Shockley diode equation, which includes temperature dependencies and series resistance. The model is evaluated using MATLAB for a typical 60W solar panel. The model is used to investigate the variation of maximum power point (MPP) with temperature and insolation levels. The performance of buck and boost maximum power point tracker (MPPT) topologies is compared with a direct connection to a constant voltage (battery) load. The results show that the boost converter has a slight advantage over the buck converter because it can always track the MPP, even under low light conditions. The direct connection is found to be less efficient, especially at low light levels and high temperatures. The study concludes that while the boost converter has theoretical advantages, the practical efficiency gains are minimal, but it remains a better choice due to its ability to always track the MPP.