Connecting LBSA Low Voltage Batteries in Parallel

Connecting LBSA Low Voltage Batteries in Parallel: What You Need to Know
At Lithium Batteries South Africa (LBSA), we design our low voltage lithium batteries to be modular, scalable, and easy to expand — whether for residential solar storage or commercial backup systems. LV batteries are connected in parallel, which allows you to increase your overall system capacity (Ah/kWh) while maintaining the same voltage.

But how exactly does this work — and what should you keep in mind?

What is Parallel Connection?

Connecting batteries in parallel means joining the positive terminals together and the negative terminals together. This configuration keeps the voltage the same, but increases the total capacity (Ah).

Example:

2 x 48V 100Ah batteries in parallel = 48V, 200Ah

3 x 48V 100Ah batteries = 48V, 300Ah

This setup is ideal when you want to increase storage time without having to upgrade you inverter.

Key Benefits of Parallel Connection

Scalability
Start small and grow your system as your energy needs increase — simply add more batteries in parallel.

Flexibility
Parallel systems are often more forgiving when it comes to balancing energy loads, especially in off-grid or hybrid solar installations.

Redundancy
If one battery fails, the others can continue to supply power, reducing system downtime.

Important Installation Guidelines

To ensure safety, battery longevity, and system performance, follow these best practices:

1. Use Identical Batteries
Same brand, voltage, and capacity.

Avoid mixing old and new batteries — this causes imbalance and uneven wear.

2. Pre-Charge Batteries
Before connecting, ensure all batteries are charged to the same voltage level to prevent current spikes between batteries.

3. Use Proper Cable Sizing
Undersized cables can cause heat buildup and reduce efficiency. Consult our support team for recommended cable thickness based on your system size.

4. Install a Battery Combiner or Busbar
This ensures a clean and balanced connection point for multiple batteries and minimizes resistance and voltage drop.

5. Enable Battery Communication (If Supported)
Many LBSA low voltage batteries come with communication ports (RS485/RS232/CanBus). Enable this feature for real-time monitoring and BMS sync if supported by your inverter.

Pro Tip: Parallel ≠ Infinite

While parallel connection is powerful, there is still a maximum number of batteries you can safely connect — usually up to 16 units, depending on the model. Always refer to your battery’s datasheet or consult LBSA for system design support.

Compatible with Major Inverter Brands

LBSA batteries integrate seamlessly with leading inverter brands such as:

• Sunsynk

• Victron

• Deye

• Growatt

• …and many others.

Our low voltage models are engineered for smooth parallel operation, supported by advanced BMS protection and communication protocols.

Need Help Expanding Your System?

Whether you're adding one extra battery or building a larger energy storage solution, the LBSA team is ready to assist with:

System sizing

Parallel connection planning

Remote support and configuration

Contact us today to get expert advice on growing your battery system the right way.

LBSA – Flexible. Reliable. Scalable.