title: "Battery-Swap Excavator Debuts with 550 kWh Pack"

date: 2026-08-18

author: EquipNode

category: New Products & Technology

tags: [electric excavator, battery swap, SANY, SY375E, new energy construction equipment]

The SANY SY375E battery-swap excavator has been officially delivered. Its 550 kWh battery pack supports hot-swapping, achieving a full charge in just 10 minutes. This marks a milestone in the construction machinery industry's transition of battery-swap models from concept to mass production.

Why Battery Swapping Is a Critical Step for Construction Machinery Electrification

In 2026, the electrification of construction machinery has accelerated significantly. However, excessively long charging times remain the biggest barrier to promoting electric excavators in high-intensity applications such as mines and tunnels. A conventional charging-type electric excavator requires 4–6 hours to fully charge, which is completely impractical for mines operating 24-hour continuous shifts.

The core logic of battery swapping is straightforward: rather than making machines wait for power, make power wait for machines.

The SY375E battery-swap excavator launched by SANY is precisely the product of this concept. The model is equipped with a 550 kWh ultra-high-capacity battery pack using a standardized modular design that supports hot-swap battery replacement. The entire swap process takes only 10–15 minutes — more than 20 times more efficient than conventional charging.

550 kWh Battery Pack: In-Depth Technical Analysis

The SY375E's battery pack is not simply an exercise in capacity stacking; it achieves technical breakthroughs across multiple dimensions:

Capacity & Range: The 550 kWh battery pack can support 6–8 hours of continuous operation under standard working conditions. Compared to the industry mainstream of 200–300 kWh solutions, range capacity is nearly doubled. For mine early-shift/late-shift rotation schedules, a single battery comfortably covers a full shift.

Quick-Swap Mechanism: A fully automatic alignment and locking system is used, with a robotic arm automatically completing battery pack removal and installation. Operators do not need to leave the cab — they can initiate the battery-swap process with a single button press from the in-cab control panel. The entire process requires no specialized technical personnel; ordinary operators can master it after just 10 minutes of training.

Thermal Management: The battery pack features an integrated liquid-cooled thermal management system with an operating temperature range spanning −30°C to 55°C. Testing in the extreme cold of Inner Mongolia mining areas showed a 60% reduction in low-temperature startup time compared to the previous generation.

Safety: Cell-to-Pack (CTP) technology without module design is employed, combined with a Battery Management System (BMS) that monitors 200+ temperature nodes in real time. The battery pack has passed GB/T 31467 standard testing and holds IP67 ingress protection certification.

Battery-Swap Station Ecosystem: More Than Just Swapping a Battery

A single battery-swap excavator has limited value; true competitiveness lies in the battery-swap ecosystem. SANY is building a network of battery-swap stations covering typical scenarios including mines, tunnels, and ports:

Standardized Battery Packs: The SY375E's 550 kWh battery pack adopts industry-standard interface specifications and can be shared across other SANY electric equipment in the future.

Intelligent Scheduling System: Each piece of equipment uploads real-time battery status to the cloud, and AI algorithms automatically schedule swap sequences based on work plans.

Secondary Battery Utilization: Decommissioned batteries, after testing, can be deployed in energy storage power stations, base station backup power, and other scenarios.

Global Market Feedback

Domestic Market: Over 30 SY375E units have been deployed for trial operations in mining areas across Inner Mongolia, Xinjiang, and Shanxi. Electric excavator sales have surged 180% year-over-year, with battery-swap versions accounting for 35% of sales.

Overseas Orders: Australia's Rio Tinto Group has entered commercial discussions regarding the battery-swap excavator solution. Demand in Southeast Asia is rapidly expanding. Export value grew 45% year-over-year in the first half of the year.

Cost Savings: Annual fuel cost savings of approximately 180,000–220,000 RMB. Battery rental monthly payments are equivalent to just 60% of diesel fuel costs.

Industry Impact

Lower acquisition barriers: Cost reduction of 20–30%

Extended equipment lifecycle: 10+ years

Emergence of new business models

Driving industry standard unification

SANY will deploy over 50 mine battery-swap stations in the second half of 2026. Overseas battery-swap station construction is included in the 2027 strategic plan.