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Pathfinder BMS firmware update: V_0.222_BETA July 5, 2025
Edit: We published another minor bug fix as V_0.222_BETA on July 5. We have published the first firmware update for …
Pathfinders are Shipping!
The first batch of Pathfinder BMSs have shipped. Pre-orders up to #9025929 from April 15 are on the way.The remaining …
Pathfinder Schedule Update (It’s Late)
Well, April has come and gone and the Pathfinder BMS is not ready to ship yet. Most of the components …
USB signal interference
I've been testing the pathfinder BMS with various equipment, and found that the USB connection is vulnerable to electrical noise …
New Self-Test feature
We added a super handy self-test feature to the Pathfinder terminal boards. They now have a TEST button and fault …
First batch is sold out!
Sorry, I should have made this post 2 weeks ago: The first production run of Pathfinder BMSs is sold out! …
Quick Start Guide (bottom cover)
Pre-sale Update: Some of the boards for the first run of Pathfinder BMSs have been ordered and are currently in …
Datasheet: Pathfinder BMS
PDF Download This is the first version of the Pathfinder BMS datasheet. (The file will update when we revise the …
Mailing List
Be the first to know when the Pathfinder BMS is up for sale! Pathfinder BMS mailing list * indicates required …
Pathfinder BMS Demo Video
First, sorry for the quality. I tried 3 times to get the GoPro to focus, and I have a lot …
Pathfinder BMS update: Still programming
Since the last update We have been coding the Pathfinder BMS firmware every day. It looks the same, but it …
2 ways to use the OKS BMS Mobile App on Amazon Fire tablets
Tested on: Fire HD 10 (11th Generation) Fire 7 Amazon Fire tablets are cheap, yet they look and feel like …
16 Cell Layout with a Pathfinder BMS
While I've been working on the new user manual, the programmer is making great progress on the firmware. I'm pretty …
Pathfinder BMS Prototypes!
Good news, I finally have a complete Pathfinder BMS on my desk! Status I will be putting these up for …
New BMS current ratings
TLDR: 175 Amps We are in the process of testing prototypes of the new Nomad and Pathfinder BMS to find …
New BMS Dimensions
Our old lineup of JBD BMSs is now out of production. Rather than adapting to a new JBD design, we …
How to identify Tesla Rev. A-B-C modules with photos
Battery modules from Model S and Model X cars come in several revisions, known as Rev A, Rev B, and …
BMS Configuration for alternative cell counts (i.e. Tesla Modules)
This PDF describes how to modify an Overkill Solar BMS for alternative cell counts. Overkill Solar normally stocks 3 basic …
Portable Tesla Power Box Example
This is a Portable battery pack that we put together for demonstrations. We found this unused Bosch tool case that …
24v Inverter Testing with a Used Tesla Battery module
Because 6 cell Lithium-Ion batteries have an end-of-cycle voltage of 18v, inverters designed for 24v systems may cut off early, …
Hallo, I need an 16s 100A bms for lifepo4. When do you expect to have them in stock again?
Greetz, Victor Schyns
I also am in dire need of a 16S Lifepo4 BMS for my Sab 60280’s and would also like to know when supplies are in.
Yes, I also need a 16s 100A bms for my LiFePo4 pack. I am interested in knowing when they are in stock. Thank you.
Hi steve,
I am putting together a small 12 v 280 ah system and am looking at several bms products. Your product is highly recommended but you are out of stock. While looking at various systems I noticed that JBD has a 150 A 4s 12v BMS. Are you going to be carrying that product and , if not why not?
No time to worry about it.
Would you guys stock a higher amp 48v/16s bms? Let say like 150a to 200a
I am assembling the same, wondering what you ended up with as a BMS?
That happens a lot when Will Prowse recommends stuff. Lol! A nice problem to have.
Purchased recently , my question is if I have a bad cell and bypassed now only 13 cell ev batt pk , if I buy a 16 S can 3 be not connected , or what can I do to trick it ? Thank you
I just purchased my batteries from China. It’ll be awhile… probably at least 30 days. This is for my power wheelchair battery pack build. What do you expect the turn around to be for my 8S 24v 100A BMS to be?
I am looking for an 18S programmable BMS for 18650 (older Tesla battery packs). Something you carry?
I am in need of 16s 48 volt smart bms 200a. Will you carry them?
Building A 16s 90a 48 volt lifepo pack for a golf cart. Do you have a jbd 16s 150 or 200a bms? Can you order it ?
Thanks Rudy
Are you guy going to make a 12v bms 250amp
I have a google pixel 6A that has the same problem other are talking about. Are you working on an update?
hello
Is it possible to connect two new BMS in parallel, for example twice 16 LFP batteries
thank you for your help
best regards