# D1 Mini battery expansion board, TP4056, with 5V step-up

- Page: https://sigmanortec.ro/en/d1-mini-battery-expansion-board-tp4056-with-5v-step-up
- Price: 11.94 RON
- Availability: Out of stock
- Reference: 9804 · EAN: 5946244099699
- Category: Electronic components > Modules for Batteries > Charging and Balancing Modules
- Specifications: Technology: Lithium Ion; Load voltage: 4.2VDC; tension: AD; Number of cells: 1S; Supply Voltage: 3; Maximum Input Voltage: 4; Minimum Output Voltage: 5; Maximum Output Voltage: 5; Source Type: high; Current Adjustment: Not; Voltage Adjustment: Not; Adjustment Type: Fixed; Maximum Output Current: 1
- Package (shipping data): 0.006 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:33 (Europe/Bucharest)

## Description

Shield for D1 Mini that allows powering from a 1S Li-Ion battery, includes safe charging with TP4056 and overcharge and discharge protections, raises the voltage to 5V for stable operation, has selectable charging current 0.5A or 1A via jumper and charging status LED.
The expansion board (shield) for D1 Mini is intended to improve the functionality of the D1 Mini module by adding the possibility to power the D1 board with a lithium battery (1S). It is equipped with a TP4056 module, which allows charging lithium batteries with high efficiency and offers safety measures to protect the battery during discharge and charging.
In addition, it has a 5V voltage booster module, which allows the battery to power the circuit at 5V when the board is powered exclusively from the battery. The expansion board is also equipped with an indicator LED to display the charging status.
On the back of the board there is a jumper (J1) that allows setting the charging voltage to 1A or 0.5A. Choose the correct charging current in order not to damage the battery (it is recommended to charge with 0.5C, i.e. half of the battery's capacity).
Important: The board comes without the pin bar. To be mounted on the D1, you need a male pin header with a distance of 2.54mm.
Specifications:
Compatibility: D1 Mini
Charging circuit: TP4056
Input voltage: 5V
Charging connector: MicroUSB
Charging current: up to 1A, adjustable from J1 between 0.5A and 1A, factory set to 0.5A
Charging voltage: 4.2V
Discharged battery voltage: 3.3V
Voltage Booster: 5V, maximum 1A
Efficiency: 90%
LED indicator: Shows the charging status (Red charging, Green charging)
Battery Type: Lithium
Protections: Short circuit, overload, excessive discharge
Battery connector: XH2.54 or solder the wires directly on the back of the module
Dimensions mm: 33 x 25mm