Orion 2 BMS - 96 Cell Battery Management System Kit
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The Orion BMS 2 in its 96 cell kit. In series, 96 cells is roughly 355 volts nominal on NMC cells or 307 volts on LFP, so this is the model for a 300 to 350 V class pack, the lower half of modern car territory.
It is supplied as a working kit: the BMS itself plus the current sensor, the cell tap harnesses, the main I/O harness and the thermistors. The enclosure is the 84 to 108 cell size, so check the dimensions in the table below against the space you have before ordering.
A lithium pack without management is a pack waiting to fail. Cells drift apart, one reaches a limit first, and the pack is then governed by its weakest member. The Orion BMS 2 measures and balances every cell, reads pack current through a hall effect sensor, tracks temperature, and reports all of it over CAN.
Two choices to make when ordering:
- Current sensor, sized to the highest current your pack will see, including peaks under acceleration rather than the continuous figure. The sensor choice does not change the price.
- Cell tap harness length, 6 ft or 12 ft, chosen by how far the BMS sits from the pack. The 12 ft option costs a little more.
This kit covers packs up to 96 cells in series. Smaller packs use the 24, 36, 48 or 72 cell versions, and larger ones the 108, 144 or 180 cell versions. The 84 to 108 cell units share one enclosure, so a bay designed for one takes the other.
Our CCS fast charging kits require an Orion BMS reporting over CAN, so this is the natural pairing if DC fast charging is in the plan. A CAN adaptor is needed to configure the BMS from a laptop.
In the box
- 1 x Orion BMS 2, 96 cell
- 1 x current sensor in your chosen rating
- 2 x 36 cell tap wiring harnesses and 1 x 24 cell harness, in your chosen length
- 1 x Orion main I/O harness, 6 ft
- 1 x current harness with 8 x 2 m thermistors
The CAN adaptor used to configure the BMS is ordered separately.
Downloads
The Documents tab holds the operations manual, the wiring and installation manual, the specifications, the mechanical drawing, which covers the 96 and 108 cell units together, the enclosure 3D drawings, the migration guide and the release notes.
We also publish our own Orion guides, written from building these systems rather than from the manual. If you are not sure which kit you need, start here:
Open the interactive system builder
It works out which BMS, sensor and harnesses your pack needs, and what the kit comes to.
- Quick start guide, eight steps from box to first power up, with the main I/O pin out
- Wiring and installation, sizing, pin outs and voltage taps
- Operations, theory, limits, failsafes and fault codes
Worldwide Shipping
Fellten offers worldwide shipping through trusted carriers including UPS, DHL, and pallet freight services. Whether you're a professional installer or a classic car enthusiast, we ensure your order is packed securely and delivered efficiently.
We are fully certified to ship dangerous goods, including lithium-ion batteries, in compliance with all international regulations.
For UK orders, most in-stock items are eligible for next working day delivery if placed before 12:00 PM. Orders placed after this time will be shipped on the next working day. Please note that all delivery estimates are stock-dependent, and you will be notified if any delays are expected.
Shipping costs are calculated at checkout based on your location and order details, so you’ll always have clear and accurate pricing before completing your purchase.
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3D model
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