About Us

Specialized Power Systems

Thanks so much for visiting our online store. Our team is excited to provide you with an impeccable online shopping experience and remains available to assist at any time. If you have questions, comments or concerns about your order or the content found within this website, please feel free to contact us via telephone or email and one of our experienced team members will get back to you right away.  Again, thanks for visiting our store and we look forward to serving you in the future.  

Specialized Power Systems is the Lithium-Battery Specific Division of Pacific Sun Systems

Pacific Management Group LLC dba Pacific Sun Systems
300 S. Highland Springs Ave
Suite 6C, #203
Banning, CA 92220


//Warranty and Claims Policy (pdf)

//Parallel Connection Instructions (pdf)


Q: What is your warranty and claims process?
A: Click Here To Download Warranty.  Our warranty for LIFEP04 batteries is 4 years. 6 Year Extended Warranty on the cells is available for a 10% surcharge on total price. 

Q: How long will it take for delivery?
A: For 12V100AH and 200AH 10-12 Business Days, For all other/larger batteries 15-20 Business Days.

Q: Do you have any lithium batteries available today in-stock?
A: Due to the variables with each application (BMS Settings, Dimensions etc) currently all 
batteries ship from our manufacturing warehouse. We do have some 100AH and 200AH drop in replacements from time to time in stock in NV or CA, and they will be posted on our home page when available. 

Q: Do you have 24V, 36V, 48V or 96V batteries
A: Yes, we can design and build any lithium battery with same standard lead time.

Q: Do you have any lithium batteries made in USA?
A: As of today, there are no LIFEP04 Lithium mines or manufacturers in the USA, buyer beware if any seller claims that. All LIFEP04 is imported.

Q: How long have you been in business?
A: We have been selling Lithium Batteries, first for only solar applications as "Pacific Sun Systems" (Parent Company), since 2010. 

Q: How can I be sure I am getting a quality product with quality components?
A: Four Reasons: 1) We have the most sales experience with lithium batteries of any other source, simply put 2010 was the start of this technology. 2) Our manufacturing partners are carefully selected (Quality, Service, Warranty Coverage) and they are the largest battery manufacturer's in the world. 3) Through our experience we eliminated the elementary issues the often cause problems in a transaction; such as but not limited to product quality. We have already solved many of the common issues that other dealers are just learning about today. 4) We accept Paypal which is the safest way to buy online, ensuring delivery and quality.