Description
PDF Datasheet
The Pathfinder BMS user manual hasn’t been published yet. The datasheet is very informative, but lacks step-by-step instructions. If you can’t find what you need in the datasheet, please email Support@OverkillSolar.com
Spare Parts & Accessories:
- Balance Terminal Boards
- Temperature Probes
- OLED screens
- DIN Rail clips
- Crimped high current wires
- Tesla interface Boards
- Hardware Kits for M6 cell terminals
Description:
The Pathfinder BMS by Overkill Solar is a Battery Management System designed for DIY LiFePO4, NMC, and LTO batteries. It has been designed and engineered entirely by Overkill Solar, drawing on our years of experience supporting the various JBD BMSs which are now discontinued. From the ground up, this BMS design is focused on DIY use, unlike most others which are industrial designs aimed at battery manufacturers. Engineering, Assembly, Testing, and Distribution are done in Naples, FL. Programming is mostly done in Canada, and the components are manufactured in a variety of cheaper countries. It can operate with battery voltage up to 64V and current up to 170 amps at 100% duty cycle. It features an advanced user interface with a built-in OLED display, user input buttons, Bluetooth and WIFI connectivity, OTA & UF2 firmware updates, MQTT for Home Assistant, and status LEDs. The cell count is field configurable from 3 to 16 cells for LiFePO4 or LTO, and 3 to 14 cells for NMC. (More than 14 cells of NMC would exceed the 64v maximum)  The Solid state high current switch is on the positive side of the battery for simplified installation and compatibility, and includes a Pre-Discharge circuit. The BMS’s basic functions are controlled by the Texas Instruments BQ76952 BMS chip, paired with the BQ34Z100 Fuel Gauge chip for advanced State of Charge tracking. The ESP32-S3 host controller configures and monitors the BMS chips, and provides an advanced user interface. The BMS is constructed with an efficient and serviceable open frame design. The typical configuration includes:Â
- Base plate with a 1 amp passive balancer and several mounting options for surface mounting or DIN rail
- Main board with Texas Instruments’ BQ76952 BMS chip and BQ34Z100 Fuel Gauge chip, MOSFET solid state switch, Solid brass Main terminals, Pre-Charge and Pre-Discharge circuits, and integrated copper heat sink.
- User Interface board with OLED display, input buttons, and ESP32 microcontroller with USB, Bluetooth and WIFI
- Balance wire terminal board with a variety of preconfigured options.
Applications:
The Pathfinder BMS is supported by the Overkill Solar Mobile app, Version 2.0 or later. Make sure your app has been updated to V2.0, as the older versions will only connect to the old JBD BMSs. The new USB app only works with the Pathfinder.
The default PIN is 123456. It can be changed via the OLED interface on the BMS.
Apple App store: Overkill Solar BMS Mobile App
Google Play store: Overkill Solar BMS Mobile App
Android APK Archive: github.com/OverkillSolarLLC/Android_APK_archive
USB App: The new USB app opens directly in a browser (Chrome, Edge, or Opera. Firefox needs a Webserial plugin to work)
More resources here: https://overkillsolar.com/support-downloads/
Reviews
There are no reviews yet.