All-in-One Power Bank Controller Board NecoPower-PD31M
All-in-one power bank controller board, under development. One bidirectional USB-C port, USB Power Delivery 3.1, charge and discharge up to 140 W. STM32L4 and a BMS for 6 to 10 cells. Not for sale.
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Under development. Figures follow the current product sheet and can still change.
The NecoPower-PD31M is the 140 W all-in-one power bank controller board in the same series as the PD30M. It has one bidirectional USB-C port, USB Power Delivery 3.1. Charge and discharge are each set up to 140 W.
An STM32L4 runs the port, the pack and the logs. The BMS is for 6 to 10 cells: lithium-ion, LiFePO4, sodium-ion or LTO. It reads cell voltage and cell temperature, counts charge, and switches the pack off on undervoltage, overvoltage, overcurrent, a short circuit, low temperature or high temperature. Logs leave the board on CAN, I2C or UART. The MCU can drive a small OLED or TFT, RGB LEDs and a sound output. Further USB-PD ports and other I/O sit on an extension module. On-board supplies are 3.3 V, 5 V and 12 V, plus a 3.3 V LDO. Fan control, heater control and fast cell balancing are on the board.
The board photograph is the series render used on both the PD30M and the PD31M sheet. The power line printed on that render reads CH-100W D-65W, which is the PD30M rating. The PD31M sheet specifies 140 W for charge and for discharge.
Applications
Power banks
Battery backup inside a product
USB-PD charge and discharge with set limits
Specifications
Status: Under development, not for sale
Product sheet: PF2524-1, October 2026, revision V1
Function: All-in-one power bank controller board
USB Power Delivery: 3.1, one bidirectional USB-C port
Charge: Up to 140 W
Discharge: Up to 140 W
Controller: STM32L4
Pack: 6 to 10 cells
Chemistry: Lithium-ion, LiFePO4, sodium-ion or LTO
Protections: Undervoltage, overvoltage, overcurrent, short circuit, low temperature, high temperature, and a charge counter
Data: CAN, I2C, UART
Supplies: 3.3 V, 5 V and 12 V DC-DC, plus a 3.3 V LDO
Also on the board: Fan and heater control, fast cell balancing, small OLED or TFT, RGB LEDs, sound output, extension module for more USB-PD ports
Size: 70 × 99 mm
Temperature grade: 0 to 70 °C, or -40 to 85 °C, depending on the build
Origin: Designed in the Czech Republic, 2026
NECOSIN Systems s.r.o. · www.necosin.com · info@necosin.com
NecoPower-PD31M
Data sheet
Chemistry
Lithium-ion, LiFePO4, sodium-ion or LTO
Status
Under development, not for sale
Product sheet
PF2524-1, October 2026, revision V1
Function
All-in-one power bank controller board
USB Power Delivery
3.1, one bidirectional USB-C port
Charge
Up to 140 W
Discharge
Up to 140 W
Controller
STM32L4
Pack
6 to 10 cells
Protections
Undervoltage, overvoltage, overcurrent, short circuit, low temperature, high temperature, and a charge counter
Data
CAN, I2C, UART
Supplies
3.3 V, 5 V and 12 V DC-DC, plus a 3.3 V LDO
Also on the board
Fan and heater control, fast cell balancing, small OLED or TFT, RGB LEDs, sound output, extension module for more USB-PD ports
Size
70 × 99 mm
Temperature grade
0 to 70 °C, or -40 to 85 °C, depending on the build
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Catalog entry only. This item is not for sale.Under development. Figures follow the current product sheet and can still change.The NecoPower-PD140i is a fully featured power-path and power-bank controller board, 66.5 mm by 43 mm. It sits between a...
All-in-one power bank controller board, under development. One bidirectional USB-C port, USB Power Delivery 3.1, charge and discharge up to 140 W. STM32L4 and a BMS for 6 to 10 cells. Not for sale.
