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HUA-X battery project reference / São Paulo, Brazil

Lithium Starter Batteries Support São Paulo's High-Mileage Motorcycle Couriers

A 180-motorcycle São Paulo courier fleet adopted 12.8 V / 9 Ah lithium starter batteries, recording a 1.1% first-year fault rate in a high-mileage, frequent-start application.

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A courier beside a motorcycle with a small starter battery in its side compartment in São Paulo.
Illustrative project scene.

A starter battery used throughout the delivery day

A São Paulo motorcycle courier fleet operated vehicles travelling more than 150 km a day with frequent engine starts. The former lead-acid battery cost BRL 220 and lasted approximately twelve months in the application.

The lithium replacement cost BRL 385, so the customer evaluated it through service frequency and operating reliability as well as the initial price.

A lighter starter installation

The project selected a 12.8 V, 9 Ah lithium configuration with a 260 A cold-cranking specification and IP54 protection. Battery mass was 1.06 kg, compared with 3.2 kg for the previous unit.

The installation included insulation to address heat exposure near the engine and exhaust. Thermal placement was treated as part of the vehicle installation rather than assuming that the same surrounding temperature applied to every battery location.

First-year service experience

After one year, the recorded fault rate was 1.1%. The faults in that period involved loose terminals rather than cell problems. The result made installation quality and connection checks a visible part of the fleet's service experience.

High daily mileage and repeated starting gave the operator a practical basis for assessing the new battery alongside the higher purchase price.

Project FAQ

Questions about this project reference

Configuration, application and operating conditions for this project.

What caused the recorded first-year faults?
The 1.1% fault rate involved loose terminals rather than cell problems. This made the mechanical connection and installation quality relevant to the fleet's service programme. The result does not mean the battery was fault-free, even though cell issues were not identified in those returns.
Why was insulation added near the battery?
The selected installation needed protection from heat near the engine and exhaust. Local heat exposure can differ from the surrounding outdoor temperature, so the battery's position and shielding mattered. The 12.8 V, 9 Ah electrical specification did not by itself describe those mounting conditions.

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