Will Prowse Approved.

48V UL Certified Batteries

The batteries below are certified to UL1973 and UL9540 standard. This is not an easy task! The biggest benefit of this listing is consistency of quality over time. Non-certified batteries can change cells and hardware whenever they please, but not these batteries. Whether you buy these batteries today or in five years, they will have consistent quality standards and third party audits. If you want something you can rely on, you have come to the right place! (Affiliate links below)

Highest Quality and Lowest price: Ecoworthy Cubix 100

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Check out these capacity test results. This battery has the best performance I have seen in a battery. This test was done at 100A charge and 100A discharge:

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Rarely do you see a battery performing better than the competition and being cheaper! This battery blows me away. Not only is it the lowest priced one, but the cells test higher than anything else I have ever tested! And this battery has UL1973 and UL9540! So you can legally install this anywhere.  

  • Rapid shutdown built in
  • 10 year warranty
  • Close loop communication with most inverters
  • Large terminals and built in breaker
  • Bluetooth connection
  • Remote trip shunt

Amazon.com Links:

Click Here to Purchase the Cubix 100 

Click Here to Purchase 4X Batteries and the Tower

Click Here to Purchase 6X Batteries and the Tower


Or buy it direct from ecoworthy for a lower price:

Click Here to Purchase the Cubix 100


Best Build Quality: Ruixu Lithi 16

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This battery has the best quality around! And it is waterproof, UL listed (for permitted systems with hybrid inverters) and has an easy to replace BMS. 


The product pictures do not do a justice at all. This thing looks great in person. 


The communication setup beats every battery I have tested so far. If you can afford it, this is a great option!

EG4 Server Rack Batteries

I have made a lot of videos with these batteries and they work well. The only complaint I have heard on the forum is balancing issues. Be sure to charge them to 100% so that they can balance over time. The advantage to server rack batteries is that you can scale your system easily over time. Buy the largest rack you can fit and build your system slowly when funds permit. 

Powerpro Battery by EG4

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Powerpro batteries are a fantastic choice and can be installed in any state. They do cost a bit more than the competition, but it is backed by an american company. 

There are 2 Models to Choose From: