How to Connect Two Batteries in Parallel to an Inverter?

　　In home or commercial applications, connecting batteries to an inverter is a common task. Connecting two batteries in parallel to an inverter can increase the system's charge capacity and output power. Below, we will detail how to perform this operation.

　How to connect two batteries to the inverter

　　Step 1: Preparation

　　First, make sure you have two batteries of the same specifications to ensure they work well in parallel. Additionally, you will need some basic tools such as a screwdriver, wrench, and insulating tape.

　　Step 2: Safety Measures

　　Before performing any operation, make sure to disconnect the power to the inverter and use insulated gloves and safety goggles to ensure safety.

　　Step 3: Connecting the Batteries

　　First, place the two batteries side by side. Then, use conductive wires to connect their positive and negative terminals respectively. Ensure a secure connection and wrap the connection with insulating tape to prevent short circuits.

　　Step 4: Connecting to the Inverter

　　Next, connect the parallel-connected batteries to the positive and negative terminals of the inverter using wires. Ensure the correct connection, positive to positive and negative to negative.

　　Step 5: Testing

　　After the connection is complete, restore power to the inverter and perform some simple tests to ensure everything is working properly.

　Battery Selection

　　Battery Types: Lead-acid batteries are a traditional choice with relatively low cost but heavy weight and short cycle life. Lithium-ion batteries offer high energy density and long cycle life, suitable for high-performance applications but at a higher cost. Lithium iron phosphate batteries combine the advantages of lithium-ion and lead-acid batteries, with long cycle life and lower cost, making them suitable for long-term deep cycle applications.

　　Specification Selection: When choosing battery capacity, one needs to consider the system's load requirements and backup time. The rated voltage of the battery should match the inverter and other system components to ensure proper operation. Additionally, cycle life is an important consideration, especially for applications requiring frequent charge and discharge cycles.

　Advantages of Parallel Connection

　　Increased Capacity: By connecting batteries in parallel, the total charge capacity of the system is increased, extending the system's runtime. This is crucial for applications requiring long-term backup power, such as the energy storage component of solar power systems.

　　Increased Output Power: Parallel connecting batteries can increase the total output power of the system, particularly suitable for handling transient loads that require higher power, such as starting high-power equipment or coping with sudden load increases.

　Safety Precautions

　　Preventing Short Circuits: When connecting batteries, it is essential to ensure that there is no short circuit between the positive and negative terminals. Use insulating tape to wrap the connections and ensure they are secure and reliable.

　　Ventilation and Temperature Control: When installing batteries, ensure adequate ventilation to prevent overheating. Overheating can lead to decreased battery performance or even damage, as well as increased safety risks.

　　Inverter Parameter Matching: When connecting batteries and inverters, ensure that their parameters match, including voltage, current, and power ratings. Mismatched parameters may lead to equipment damage or safety hazards.

　　I hope this article helps you successfully connect two batteries in parallel to an inverter, expanding your power system capacity and output power.