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USA,Poland Local Stock,3-7 Days Delivery





MB31 3.2V 314Ah prismatic cell, lifepo4(lithium iron phosphate) material, no fire, no explosion, real capacity 330Ah (original factory report shows), 8000 cycle life (≥70% SOH), service life of more than 10 years.

The battery cell has been welded with a single M6 stud(aftermarket), which is convenient for DIY battery. It is recommended to use a torque of less than 6N.m for assembly.

The battery cells have the original test report, the QR code is intact, and all the battery cell test data can be tracked.(How to determine whether it is a Grade A battery?)


The battery cell comes with the necessary accessories, busbars, flange nut and epoxy plates to assemble the battery pack.The busbar is made of nickel-plated copper, which has low resistance, good conductivity, corrosion resistance, and generates little heat during operation.

The battery cells are packed in cartons that meet the requirements of dangerous goods, with transparent tape wrapped around the outside to prevent rainwater from seeping into the cartons. Customized sponges are used to fix the cells, effectively protecting them from impact damage.




Pre-assembled Version: The DIY battery box comes pre-assembled with a BMS, battery terminal, and circuit breaker. DIY enthusiasts can directly place sized prismatic cells into the box.
250A Circuit Breaker: The battery box is equipped with a sensitive, high-quality 250A circuit breaker to effectively protect the battery and circuit system.
16S 200A BMS: The DIY battery bank features a JK PB2A16S20P BMS, providing a 200A continuous discharge current and a 2A active balancing current to prevent overcharging, over-discharging, overcurrent, and short circuits, balancing the cells and extending battery life.
Flexible Connectors: 2mm thick flexible connectors are used between cells, between cells and the BMS, and between the BMS and battery terminals, capable of handling a continuous 200A discharge current.



You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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