Optimizing Motorcycle Battery Configurations: Series vs. Parallel Connection

Motorcycle batteries play a critical role in the performance of these vehicles, yet their optimal combination often remains unclear to many users. Understanding the dynamics of battery combination directly impacts the power and endurance of a motorcycle. Let’s delve into why series connections outweigh parallel connections for motorcycle batteries.

Common Methods of Combining Motorcycle Batteries

Batteries in daily use, like 48V, 60V, and 72V systems, are essentially linked by 12V batteries. For instance, a 48V configuration comprises four 12V batteries in series, increasing voltage as more batteries are linked. TYCORUN ENERGY, known for its 48V 50Ah, 60V 50Ah, and 72V eBike batteries, utilizes 3.6V 50Ah ternary lithium cells in combinations like 14S1P, 17S1P, and 20S1P, enhancing motorcycle performance.

Advantages of Series Connections

A motorcycle’s speed predominantly hinges on motor current, determined by voltage and power (P = U * I). Series connections elevate voltage, augmenting battery capacity. For instance, while both a 72V 20Ah and 60V 20Ah seem similar in capacity, the former exhibits greater range and power due to increased voltage.

Disadvantages of Parallel Connections

In the era of lead-acid batteries, parallel connections seemed feasible to expand capacity, but this approach lacked sufficient voltage. Connecting 12V batteries in parallel increased capacity but diminished power output, rendering it inadequate for ordinary electric two-wheelers.

Pros and Cons of Parallel Connections

Parallel circuits maintain equal voltages across battery groups. However, differing internal resistances may lead to uneven charging currents, causing undercharging in some batteries. Over time, this imbalance can deteriorate batteries and drastically reduce their lifespan, making single battery pack use far superior.

When to Use Batteries in Parallel

High-speed electric vehicles, using lithium batteries with smaller units, might benefit from parallel connections to extend range. However, this scenario is relatively rare, and the majority of motorcycles still rely on series connections for enhanced power and performance.


Series connections in motorcycle batteries elevate voltage, boosting power and endurance. In contrast, parallel connections solely increase capacity without meeting power requirements, diminishing vehicle performance. Moreover, parallel setups often take longer to charge, making them impractical for most motorcycle applications.

In essence, the choice between series and parallel connections significantly impacts a motorcycle’s overall performance and lifespan. For optimal results, understanding the nuances of these connections is crucial when configuring motorcycle battery setups.