1. Reasons for inverter voltage drop
1). The cable connecting the battery and inverter is too thin and too long. Generally, the thinner and longer the cable between the input end of the inverter and the battery, the more energy is lost and the greater the voltage drop, especially for a 12VDC inverter, which usually has a narrow voltage range. Around 10V-15V, and a voltage drop of 1-2V may directly cause the inverter to be in a low-voltage protection state and unable to operate normally.
2). The battery capacity is too small. A small battery capacity may cause the battery to be unable to provide sufficient power to the inverter to power the load, especially for inductive loads such as refrigerators, air conditioners, and electric drills.
3). DC voltage is too low
During use, the battery is always in a discharge state. Generally, the inverter has low-voltage protection. Once the battery voltage drops to its low-voltage protection range, the inverter will stop working to protect the battery from over-discharge.
4). Inverter overheating
When the inverter overheats, it will cause the temperature of the circuit board to be too high, which will affect the normal operation of the circuit and even make it impossible to operate normally. Therefore, if the inverter overheats when it is working, heat dissipation should be carried out in time.
5). Battery aging
When the battery is used for a long time, performance degradation, voltage drop, etc. will occur. When the battery voltage drops to a certain level, the inverter will not be able to work properly, resulting in a voltage drop. It is worth noting that in a battery pack, aging or damage of one battery unit will limit the efficiency of the entire battery pack, so finding out which aging battery unit is key
2. How to solve the problem of inverter voltage drop
1). Check the wiring connections of the entire off-grid system to ensure that the specifications of the cables between batteries and the cables between the battery system and the inverter meet the requirements and do not restrict the inverter from powering the load.
2). Calculate the battery capacity to ensure it can power your various loads
3). Install a radiator
If the inverter overheats, you can improve the heat dissipation effect by installing a radiator, cooling fan, etc., thereby reducing the temperature and solving the problem of inverter voltage drop.
4). Check battery voltage
If the inverter voltage drops, you can first check whether the battery voltage is normal. If the battery voltage is too low, fully charge it.
5). Replace the battery
If the battery aging causes the inverter voltage to drop, you can consider replacing the battery. Generally, the battery life is 3-5 years. If it is used for too long, the battery should be replaced in time to ensure the normal operation of the inverter.
In short, inverter voltage drop is a common problem in off-grid systems. When this happens, the problem should be checked in time and corresponding solutions should be taken.