CoolQ Energy Powers the Green Upgrade! On-site Coverage of 80 Battery-Swapping Buses: 6‑for‑4, 5‑for‑4—range remains unchanged, while efficiency doubles!

Recently, KQ Energy successfully completed a battery‑pack upgrade project for a fleet of new‑energy buses. The project involved 80 buses, operating under two configurations—“6‑to‑4” and “5‑to‑4”—and, while maintaining the original battery capacity and voltage, achieved a dual improvement in both vehicle range and operational efficiency by replacing the existing packs with next‑generation models. Now, let’s step onto the battery‑swap site and experience the exciting moments of this “energy renewal” firsthand!

First Encounter: A Renewal of Energy

At dawn, a truck laden with cutting-edge battery packs slowly rolled into the bus depot. These packs incorporate the latest cell‑technology, delivering a substantial boost in energy density—meaning the same amount of energy can be stored using fewer units. They sit quietly, poised to power 80 buses with robust, reliable energy.

Land steadily, take your positions in an orderly manner.

As the truck’s tailgate rises, forklifts shuttle back and forth, and crane booms extend and retract, each battery pack is carefully lowered to the ground. The sounds of on-site dispatchers and machinery blend together, yet everything remains perfectly organized. This is not merely the unloading of goods—it is also the smooth, steady arrival of green energy.

Fully prepared and ready to go, awaiting deployment.

In the unloading area, rows of brand-new battery packs stand neatly in formation. Having already passed their “pre‑employment health check,” they await the go‑ahead to take up their posts, becoming the buses’ new “power hearts.”

Meticulous and attentive, bidding farewell to the former player.

Beside the vehicle, technicians are bent over, inspecting and dismantling the old battery pack. With tools in hand and their eyes focused, they leave no connector or screw overlooked. It is a gentle farewell to the old components—and a solemn welcome to their new companions.

Gloriously retired, stepping down after achieving success.

The removed old battery packs are neatly stacked; once they accompanied buses as they crisscrossed the city’s streets and alleys, witnessing the daily commutes of countless passengers. Now that they have fulfilled their purpose, they are set to enter the recycling process, continuing their green legacy in a new form.

Precise alignment, injecting new momentum.

The new battery pack was gently lifted into place, as the workers held their breath, carefully adjusting its angle to achieve a precise alignment with the vehicle’s chassis. With a satisfying “click,” it locked into position, and the wiring, securing, and final adjustments were completed in one seamless motion—marking the successful installation of the vehicle’s new power core!

Coordinated operations, bustling with activity.

Multiple teams of workers are toiling in tandem—some meticulously securing battery packs, others connecting wiring, and still others crouching beside the vehicles, fine-tuning the systems. Sweat has soaked their work uniforms, yet everyone coordinates seamlessly, creating a scene of bustling, energetic activity. To get the buses back on the road as soon as possible, they’re racing against the clock.

Completely refreshed and ready to go.

With the final battery pack installed and the system’s self‑diagnostic check passed, the vehicle started up normally. A bus that once required six or five battery packs now needs only four—yet its range remains unchanged, and its charging efficiency has improved. The newly revamped bus slowly rolled out of the workshop, ready to return to the city’s transit routes and carry on its green mission.

Technical Analysis: 6-for-4 and 5-for-4—what’s the secret?

Many friends are wondering: With the number of battery packs reduced, how can the capacity and voltage remain unchanged?

The answer lies in the increased energy density of the battery cells. The new‑generation battery pack employs high‑energy‑density cells, enabling each pack to store more electrical energy and thus achieving the same total capacity with fewer packs. Meanwhile, the battery management system (BMS) has been precisely calibrated to deliver an output voltage that is fully compatible with the vehicle’s original specifications, ensuring seamless compatibility without any modifications to the car.

This upgrade delivers three major benefits:

Weight reduction and efficiency gains: The vehicle’s overall weight is reduced, energy consumption is lowered, and it delivers improved fuel economy.

Simplified maintenance: With fewer battery packs, the number of potential failure points is reduced, making subsequent maintenance easier.

Space Optimization: The chassis space is freed up, leaving room for future upgrades to other components.

Green transformation, never-ending progress.

This battery‑replacement project, involving 80 buses, represents a valuable initiative to enhance the operational efficiency of urban public transit and advance sustainable mobility. The deployment of new battery packs has not only improved vehicle performance but also provided robust support for more agile and flexible bus‑dispatching operations. We look forward to continuing to drive technological innovation and contributing further to the electrification of public transportation.