OUPES Weekly Q&A Vol. 11: Frequency Switching, Expansion Battery Efficiency, and Battery Cell Grades Explained

What does 'F50/60' mean? How can I verify my device's current frequency and switch between options on the control panel?

F50/60 denotes 50Hz/60Hz frequency, representing the number of alternating current oscillations per second. You can confirm the device's frequency either by checking its identification label or by safely inserting a multimeter (with Hz mode) into a power outlet to read the live frequency. After verification, long-press the AC button on the main unit to access the frequency switching menu. Select your desired frequency, then short-press the AC button to complete the switch.

I have an AC port expander. Can it be connected to the main unit for convenient use?

Certainly. Just make sure that the total power consumption of all devices operating simultaneously must not exceed the energy storage unit's rated output power, as this is a hard limit determined by the inverter. You can safely add more outlets to connect multiple low-power devices.

When my Mega2 discharges at 100W while connected to a B2 expansion battery, the Mega2's displayed capacity becomes 20% lower than the B2's after one hour. Why does this efficiency difference occur despite both units having identical rated capacities?

When the main unit is connected to expansion batteries, our system prioritizes discharging from the highest State of Charge (SOC) unit while charging the lowest SOC unit first. Since the Mega2 directly powers connected loads, it experiences reduced power dissipation through circuit paths and wiring, resulting in higher discharge efficiency. Additionally, current measurement drift between units contributes to efficiency differences.

What is the difference between Grade A and Grade B battery cells? Approximately how many cycles do they have, and what are the performance implications?

All our products exclusively utilize Grade A LiFePO₄ (lithium iron phosphate) battery cells, delivering 3,000-5,000 charge-discharge cycles. By comparison, Grade B cells typically achieve only 1,000-2,000 cycles.

With 2-3 times the cycle life of Grade B equivalents, our Grade A cells provide superior energy density and significantly more stable performance. Choosing Grade A cells translates to:

Extended product lifespan

Reduced maintenance costs

Guaranteed safety in high-load applications

While Grade B cells offer marginally lower upfront costs, their long-term hidden expenses—including frequent replacements and performance degradation—often result in substantially higher total cost of ownership.

When I opened my product, there was a distinct electronic/electrical smell. Is this normal? How can I get rid of it?

The electronic smell is normal for new machines due to sealing adhesives, paint applications, and extended shipping time in packaging. You can be assured it's safe to use.

Why won't my machine turn off when it's plugged into AC power?

Your issue is directly related to the auxiliary power supply (APS) within our power station system. When AC input (charging cable) is connected, the APS immediately activates and maintains power to the control systems. This means the main control unit (MCU) and Battery Management System (BMS) remain operational, actively monitoring input status, battery conditions, and user button operations at all times.