Valve-regulated lead-acid maintenance-free battery is a new type of battery in recent years. It is easy to install, simple to use, and requires little maintenance. It is suitable for small and medium-sized substations and distribution rooms.

Lead-acid valve-regulated battery is relatively delicate in terms of its characteristics. It cannot be charged with high current and high voltage, nor can it be discharged at full capacity. This is determined by the material. Therefore, the voltage and current are limited during charging. When the current and time limit reach a certain voltage during discharge, the discharge needs to be stopped (single cell 1.85v×108).

Charging: Calculate the charging current according to the battery capacity, charge at 0.1 times the battery capacity, the single cell voltage cannot exceed 2.35V, and the total voltage of 18 batteries is 253.8V. For example: for a 100AH capacity battery, the current cannot exceed 10A during charging; charging voltage: the single cell voltage cannot exceed 2.35V×108＝253.8V, so the voltage of the entire battery group needs to be limited to 253.8V.

Discharge: According to the battery capacity, the discharge current is 0.1 times the capacity, and the voltage is 200V. For example: 65AH discharge is 6.5A, voltage is 200V, discharge time is 10 hours, and it is completed.

Detect the capacity of the battery: current × time = capacity

For example: 65AH battery: 6.5×10＝65AH

Insufficient discharge time means insufficient capacity. For example, if there are 18 batteries and the voltage is 200V, the discharge must be stopped.

According to the characteristics of lead-acid batteries, the following charging and discharging operation steps are written for user reference:

1. During overhaul, stop the AC power and ensure safety.

2. If there is a discharge switch, connect it to the lower line of the switch; if there is no switch, connect the external load to the battery pack switch; 1000-1500W discharge current. (Ensure that the battery discharge current is 0.1 times the capacity)

3. Stop discharging when the battery pack voltage reaches 200V.

4. Send AC power, charge, and fully charge in about 10 hours.

5. If the capacity is not enough, you can do another cycle. Discharge--charge to detect capacity.

6. When the battery capacity is insufficient, please repair or replace it in time to ensure normal power supply.