Even if handled properly, lithium batteries pose a risk of fire and explosion. By using our site and purchasing our products, you are acknowledging that you understand the risks herein. It is imperative that you read our important safety information prior to purchase. Higher Wire is not liable for any damage stemming from the use of our products.
A battery management system (BMS) is essential in a lithium ion battery build. Li-ion batteries are much more sensitive to voltage than lead acid, and can be dangerous if over- or under-charged. It protects against over- and under-voltage as well as over-current, and ensures that the cells are balanced. This BMS is for a 4S (12.8v nominal) lithium iron phosphate (LiFePO4) battery, and allows 100 amps continuous discharge and 50 amps charge. That's 1,280 watts of continuous power. Wow!
To wire, you will need to connect the battery and charge/load ground wires. You will also need to tie each of the balance leads into the individual battery cells. Note that this has a common charge/discharge port, rather than separate as with other BMS boards.
This BMS is suited for smaller projects, but don't expect it to be adequate to protect a large build such as an off-grid power wall. This is perfect for applications up to 1,280 watts. And the case is waterproof.
See photos for specifications.
We ship the majority of our orders by the next business day. Lithium batteries may take up to two business days to process to accommodate inspection and logging into our system.
Our shipping rates are based on the weight of all ordered products plus estimated weight of packaging. We make every effort to forecast an accurate shipping cost, but cannot be 100% certain in all cases. Please contact us at firstname.lastname@example.org with any questions prior to purchase.
We pack and label all lithium battery shipments in accordance with Federal Regulation 49CFR173.185, as well as USPS Publication 52 Hazard Class 9 or UPS/Fedex guidelines. Unless otherwise stated, lithium batteries are not eligible for free shipping.
We try to pack all items in an order in a single box, however we may on occasion need to ship items separately. Special shipping does not apply to lithium ion batteries, and orders that include batteries may not qualify for free or expedited shipping.