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VESC Harmony 16
From: €119.99 ex VAT
The Harmony 16 BMS can manage up to 16 cells in series for batteries discharging up to 320A
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The Harmony 16 is a high-power BMS which can manage up to 16 cells in series for batteries discharging up to 320A. An on-board ESP32 micro-controller running open-source VESC Software enables precise real-time monitoring and balancing of individual cell groups. VESC Tool enables complete flexibly to configurable all the parameters of the BMS so that the battery can be operated safely. With a maximum charge current of up 15A and real-time monitoring of cells, the battery can be wirelessly monitored while waiting for the battery to charge. This BMS also features short circuit protection up to 320A with a 10µs response time.
CAN-bus connectivity allows for seamless integration with other VESC devices for effective communication between all devices in the system. Other communication methods include USB-C, Wi-Fi and Bluetooth for convenient and flexible options to connect, configure and monitor the device using VESC Tool.
Suggested applications include small electric vehicles such as E-bikes, E-Scooters, electric skateboards, go-karts, trikes or buggies.
The following items are included:
- 1x VESC Harmony 16 BMS
- JST GH Connectors with 500 mm cables for all ports
24 month limited warranty
- Maximum input voltage of 80V (16s Li-Ion cells)
- Short circuit protection up to 320A with 10µs response time
- Charge current configurable up to 15A
- Built-in power switch with 1A constant current precharge circuit
- Open-source firmware and scripting support custom applications running on the onboard ESP32-C3
- Four configurable temperature sensor inputs compatible with NTC 10k Ohm 3380 B, with ambient temperature sensing on T4
- Integrated temperature sensors automatically protect the system during high power draw
- Broad range of communication interfaces including USB, Bluetooth, CAN-bus, and Wi-Fi
- Cross-platform customization and monitoring through VESC Tool, available on desktop and mobile, for easy battery configuration and cell monitoring
- Fully configurable integrated sleep mode with ultra-low sleep current, under-voltage lockout, and auto power-up and shutdown
- Integrated ESP32-C3 supports both station and access-point Wi-Fi connections alongside BLE 5
- Monitor the state of charge by voltage or coulomb counting
- Balancing after charging allows lower balancing currents over longer periods to manage large imbalances without excess heat
- Includes 4GB of integrated memory and a real-time clock for timestamp logging and time synchronization with other devices like displays
What is the maximum regeneration current?
It mainly depends on what the battery cells can handle rather than the BMS. The BMS itself can take the same regen current as output current as it goes through the main power path.
Through the charging port it can only go up to the specified charge current.
Charge current, battery current, and battery regeneration current can all be individually configured using VESC Tool to suit your specific application, hardware or performance requirements.
The BMS does not respond and it is impossible to connect over USB/WiFi/Bluetooth
Most likely the BMS has entered sleep-mode. Sleep mode is entered when
- Power is off
- Nothing is connected over USB, Bluetooth or Wifi
- Not balancing
- Not charging
- Block sleep is disabled in the settings
Notice that block sleep is enabled by default, but it will disable itself after a few hours to avoid draining the battery.
In sleep-mode it is not possible to connect to the BMS over USB, Bluetooth or Wifi. To leave sleep mode you can
- Enable the power output by bridging EN and ENs on the comm-port
- Connect a charger
Do you offer discounts for bulk or B2B orders?
Yes, we offer a discount when ordering 3+ and 10+ units which can be seen on the website. For order quantities over 50 units please send your business details and order requirements to info@vesclabs.com, and our team will provide a customized quote and lead time.
Do you offer OEM or customized solutions?
Yes, we do. Please contact us at info@vesclabs.com with your project requirements and specifications, and our team will assist you with tailored OEM or custom solutions.
Do you offer discounts or sponsorships for students, projects, or educational institutions?
Yes, we do. Please send the details of your project and institution to info@vesclabs.com, and our team will review your request.
Do you offer paid integration, setup and tuning support?
Our partner Oliver, also known as Electricfox, offers paid consulting services for BMS and motor controller integration, setup, tuning and load testing. His website is
At the bottom of the page you can find different options to contact Oliver
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