Major Safety Warning: Dangerous Lithium Battery Product Exposed

You may have received an email from Peter@NextGPower offering an NCM lithium battery for Toyota hybrids. This is not NexPower, and not me (Peter). It appears to be a copycat company based in China. Even worse, they are selling a product that is proven to be extremely dangerous for hybrid application.

 

Who is selling dangerous NCM lithium blade in the U.S. market?

• Ennocar
• NextGPower
• Random Alibaba brands

 

What’s going on right now?

In March, 2026, we started getting messages from customers asking us about “NCM lithium” battery. That immediately raised red flags, because NexPower have transitioned entirely to Sodium-ion more than two years ago.

 

Why is this dangerous?

The issue is simple: The Prius inverter can produce voltage far beyond what an NCM lithium cell can handle, under certain conditions, the inverter will attempt to charge the battery pack up to 270V. Since the NCM lithium pack uses 56 cells, that comes out to about 4.82V per cell, way beyond the maximum safe voltage for NCM lithium chemistry at 4.2V. Even at 249.29V as shown in below random screenshot of Dr. Prius App, the cells would still be at 4.45V each, which is already way over the safe range. At that point, the risk of thermal runaway, fire, and serious vehicle damage is imminent.

 

This is not a small issue or a minor design flaw. It is a fundamentally unsafe setup for this application. And don’t just take our word for it. Here is a video from our competitor explaining how dangerous this type of product is:

 

 

Conclusion

A high-voltage hybrid battery is not something to gamble with. At NexPower, we develop our batteries in the USA and test them to the absolute limit to ensure our customers receive a safe, reliable product they can count on for years to come. We hope this information helps you make the right choice.

 

Sincerely,

Peter Neilson