Docan Energy Panda: Are Will Prowse's Complaints Valid?

I previously reviewed the Docan Energy Panda battery, calling it 'The New King' for its impressive capacity and low cost per kWh. Soon after, fellow creator Will Prowse released his own in-depth testing video, highlighting some gripes with the unit. Today, I'm taking another look at the Docan Energy Panda, diving into the specific concerns Will raised and offering my own perspective after more time with the battery.

Disclosure: Docan sent this unit for testing for my first video. All opinions and test results, including for this follow-up, are my own. Docan has no input on this content.

What I Built

My core setup involves the 32 kWh Docan Energy Panda battery, which I continue to use in my garage. It's a substantial white and black unit on wheels, designed for significant home energy storage. For this follow-up, I specifically focused on inspecting the internal wiring, testing the software response time, and re-evaluating the physical design aspects that Will Prowse and I both noted in our initial reviews.

Why It Works

Despite some of the issues I'll detail, the Docan Energy Panda fundamentally works as a large-scale LiFePO4 battery. Its generous 32 kWh capacity means it can power significant loads for extended periods. The internal components, including the Battery Management System (BMS) and active balance board, are present and functional, ensuring safe operation and cell balancing. The battery effectively stores and delivers power, which is its primary purpose, making it a viable option for those seeking energy independence or substantial backup power.

Parts & Specs

• Battery: Docan Energy Panda
• Chemistry: LiFePO4
• Capacity: 32 kWh
• Cost: Approximately $97.00 per kWh (as mentioned in my previous video)
• Voltage: Around 53V (during tests)

Math & Run-Time Numbers

One of the main areas of concern was the software's responsiveness. During my tests, applying a load (like an electric space heater) or removing it showed significant delays in the display updating:

• Load Application (0A to ~27A): The screen took approximately 22 seconds to register the change.
• Load Removal (~27A to 0A): The screen took between 17 seconds and 40 seconds in repeated tests to show the current dropping back to zero.

While testing, I also noted a heavy load test pulling around 34 amps or about 1800 watts from the battery.

Pros & Cons

Pros:

• Very competitive cost per kWh.
• High capacity (32 kWh) for extensive energy storage.
• Functional and reliable for long-term, non-real-time use.
• State of Charge (SOC) indicator light is useful for quick checks.

Cons:

• Substandard shipping pallets (my unit punched through).
• Messy internal cable management with loose wires and ribbon cables.
• Extremely slow software updates on the display (up to 40 seconds delay).
• Not stackable due to physical design, requiring side-by-side placement.

When To Use This vs. Alternatives

The Docan Energy Panda shines for homeowners and tinkerers prioritizing raw capacity and cost-effectiveness over premium fit-and-finish or real-time data. If you're building a 'set it and forget it' home energy storage system or a robust backup power solution where you don't need minute-to-minute updates on current draw, this battery delivers exceptional value per kWh. The external State of Charge light provides enough information for casual monitoring. However, if you require precise, instant feedback on power flow for active testing or advanced system management, or if you need to stack batteries for a smaller footprint, you might find the software lag and non-stackable design frustrating. Alternatives like the Yijing battery (as mentioned by Will Prowse) might offer better stackability and potentially more responsive monitoring for those specific needs.

Bottom Line

While the Docan Energy Panda has some clear drawbacks, particularly in its shipping protection, internal cable organization, and slow software interface, these are not deal-breakers for every user. For my personal use case, where the battery integrates into a larger system and isn't constantly monitored for instantaneous data, its high capacity and low cost remain compelling. It's a powerful and affordable battery that gets the job done, provided your specific needs align with its strengths rather than its weaknesses.

Final Wrap-Up

I hope this detailed follow-up sheds some light on the Docan Energy Panda's quirks and capabilities. Your feedback is always welcome, so please like, comment, and share your thoughts below. Don't forget to subscribe to the channel for more hands-on DIY solar and home energy storage content. Stay tuned, stay safe, and I'll catch you all next time!