Best Lithium Battery Solutions from Design to Delivery for 20+ Years

√ More than 30 experienced engineers ensure your battery is fast and reliable


√ ISO standard working environment ensures that all packages have the same performance


√ 97.5% on-time delivery rate for Custom Battery Packs 



√ Customized 12V 24V 36V 48V 72V 80V Lithium Battery Pack

Solar Lithium Battery Fire

Custom Built to Your Standards

BSLBATT LiFePO4 Custom Battery Packs solutions are the best of both worlds: our innovative technology built to your product standards. We approach every OEM partnership with openness: so we can understand your needs and you can understand our competencies, standards and commitment to delivery.


From engineering and design to development teams that prioritize performance and customer experience, trust BSLBATT to be your single source partner to deliver the custom battery packs solution that achieves your vision.


When you’re looking for a trustworthy partner to build your custom product, let our experts reduce development risk and bring a high-quality product to market faster for you. Contact us today to get started!

Our Products

A custom lithium ion battery refers to a battery that is specifically designed and manufactured to meet the unique requirements of a particular application. Unlike off-the-shelf batteries, custom batteries are tailor-made to fit the specific needs of a device or system. This customization allows for better performance, increased efficiency, and improved safety.

Custom Battery Packs Application

When considering custom lithium ion battery, it is essential to work with experienced manufacturers who have expertise in battery design and manufacturing. These manufacturers can provide valuable insights and guidance throughout the customization process, ensuring that the final battery meets all requirements and specifications.

Power your adventure with BSLBATT rechargeable lithium-ion batteries. Check out the applications; advantages of our lithium iron phosphate battery today!


Custom Lithium Battery Pack Manufacturer

our companion

Why choose BSLBATT Battery for custom design?

High-quality A-grade battery

In-depth strategic cooperation manufacturer with world-renowned battery cell manufacturers CATL, BYD, REPT. We send you a list of questions professionally, so your equipment can work in good condition at an affordable price.

Small order acceptable

With low MOQ, you can market test your business idea before mass production. BSLBATT helps you monitor and control your risks, and we work with you as a partner to meet new market trends in lithium batteries.

OEM/ODM acceptable

20 years OEM/ODM experience, serving more than 500 customers from the US and almost the whole of Europe, we can design lithium battery packs according to your specifications, if you think it is important, we will sign a non-disclosure agreement with you!

Free logistics arrangement

We will arrange shipping and all security and customs documents for you, all free, documents include MSDS, UL1973, UL2580, CE, FCC, RoHS, we get lower shipping rates like 30% from DHL and UPS

3000+ Happy Customers

Quality is the Soul of our company, and we make only with brand new safe li-ion battery cell ever since our establishment, Take your time to check Our happy customers review with you.

Great Team

Passionate 40 sales team working closely with 30 Technician to offer fast email response in less then 2 hour or Real time skype or phone talking. All risks are controlled at the beginning during sample confirmation or when raw material comes.

Cooperation Process For Custom Battery Design

Step 1: Confirm customer needs

Please contact us by phone or email and we will reply with Custom Battery Packs design within 24 hours! Confirm the customer's application requirements such as: lithium battery parameters, performance, working environment, appearance, size, etc.

Step 2: Project Review

We will try to find the best solution for your custom project and provide detailed price, delivery time and payment details

Step 3: 2D, 3D Design and 3D Sample Confirmation

According to customer needs, put forward a preliminary product design plan. And make 3D samples according to the design plan. Then send the drawings and samples to the customer for confirmation.

lithium iron phosphate battery

Step 4: Mold Development

Open the mold, according to the 3D sample confirmed by the customer. Test the comprehensive performance reliability of the product. Then modify the mold until the customer confirms OK.

Step 5: Product and Tooling Confirmation

If the sample goes well, you can send us the deposit, we will start mass production, you can send the QC staff during the production or when it is finished.

Step 6: Shipping

We will find the best reliable way to ship the battery to you, along with all required shipping documents such as MSDS, UN38.3, IEC62133.

Work with the Leaders in Lithium

Add the BSLBATT team and you’ll add critical capacity, experience, and engineering talent across the entire development cycle. Leverage our expertise to innovate faster, shorten time to revenue growth, and minimize costly delays across planning, design, prototyping, proof-of-concept, and testing.

Solar Lithium Battery Fire

Enhance Your Customer Experience

Built into every BSLBATT lithium battery is a premium reputation we’ve worked years to develop. Whether the product has our name on it or yours, the quality is identical. And the reliability, resiliency and performance that our customers appreciate about BSLBATT will be the same qualities your customers will appreciate about you.

Have A NEW Projects? Want A New Battery Pack?

No Battery Pack Design Set Up Fees, Feel Free to Contact us for your Own Design