Batteries with different capacity, performance, age, and manufacturers should not be connected for use. When connecting, insulated tools should be used to prevent accidental short circuits between positive and negative terminals. When the battery is connected to the charger or load, the circuit switch should be in the Off position. The positive terminal of the battery should be connected to the positive terminal of the charger or load and the negative terminal of the battery should be connected to the negative terminal of the charger or load. The nuts, bolts, washers, and connecting wires used for connection should be moderately tight and even, avoiding loose or over-tight screws.
Charging can be divided into initial charging, normal charging, equalization charging, etc.
Initial charging, also known as the first charge of a new battery, is intended to reduce the oxidized active material on the plate generated during the assembly process, increase the active material content, and improve the discharge performance of the VRLA lead-acid battery.
Normal charging is charging of a battery that has been discharged.
Float charging is when the battery pack is connected in parallel to the AC power supply, and the rectifier rectifies the AC power into DC power, which charges the battery while the inverter reconverts the DC power into AC power to provide power to the load. When the AC power supply is interrupted, the DC power of the battery is immediately inverted and converted into AC power to provide power to the load, to ensure continuous power supply. This type of battery charging is called float charging.
Equalization charging, during use, rechargeable VRLA battery with lead-acid often experience imbalance in specific gravity, capacity, voltage, etc., which can cause the output voltage and output capacity of the battery pack to be too low. Therefore, the battery pack is overcharged to ensure that each individual battery is in a fully charged state. This charging process is called equalization charging.
No matter which charging method is used, attention should be paid to controlling the charging voltage and current according to the manufacturer's product specifications, to prevent overvoltage and overcurrent charging which can cause a decrease in battery performance and shortening of battery life.
The discharge current should not be too large, and short-circuit discharge should be avoided. During discharging, the terminal voltage of the battery should not be lower than the termination voltage to prevent over-discharge which can cause a decrease in battery performance and shortening of battery life. After discharging, the battery should be charged promptly. The battery should not be left discharging for a long time.
Extracting partial voltage from the battery group should be strictly prohibited, as this will break the balance of the battery group and will cause some batteries in the group to degrade in performance over time. Similarly, using the tail battery method is not recommended.
VRLA Battery should be stored in a clean, well-ventilated room with a suitable ambient temperature; keep away from heat sources and avoid exposure to sunlight. The battery should be regularly charged as normal.