Reviews & Ratings
This solar panel system consists of two 24V/320W poly solar panels. The system is powered by a 3KWH LiFePo4 battery with a rated voltage of 25.6V and a capacity of 130Ah. It also includes a 1.5KW built-in inverter that provides 220V output at 50Hz.
The system has a continuous input and output of 80A, allowing for efficient charging and power supply. The electricity charging current is 5A, and the charging voltage ranges from 28.8V to 30V, with a cut-off of 2.5V per single cell. The self-discharge at 25℃ is less than 3% per month.
The depth of discharge for this system is up to 95%, meaning it can effectively utilize the battery's capacity before needing to be recharged. The working temperature ranges from -20℃ to 70℃, while the recommended temperature for optimal performance is between 10℃ and 45℃.
Battery is the core component, and also the key element to determine life span of a solar energy system. Batteries currently on the market, are mostly lead-acid batteries, which have a relatively short service life; ternary lithium batteries are not suitable for outdoor use. We use 3.2V liFePO4 battery, working temperature range is from - 47 ° to 70 °, and discharge efficiency reaches 95%. The discharge efficiency of lead-acid battery is about 65%.
P-O bone of LiFePO4 battery is stable and hard to decompose. Even high temperature or overcharge, will not occur structure collapse, fever, neither form strong oxidation substances, therefore it guarantees good safety performance.
At low temperature, when battery charge discharge rate is higher than 2C , it is easy to cause crystal precipitation in electrolyte, which can puncture the battery valve and cause battery damage. By controlling the charge and discharge rate at about 0.2C, Euler Energy effectively avoids this problem and ensures the low temperature performance.
In addition, the configuration of solar panel and battery is designed, which charging current will not exceed 0.2C. It ensures working performance even in Hailaer. (daily average minimum temperature - 27 ℃).
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