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18650 Dual USB 5V Mobile Power Bank Boost Charging Module H913-B V1.0 – 0729HS DIY Board
18650 Dual USB 5V Mobile Power Bank Boost Charging Module H913-B V1.0 – 0729HS DIY Board
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The H913-B V1.0 dual USB mobile power module is designed for building a DIY power bank using 3.7V 18650 lithium-ion batteries. It combines battery charging, voltage boosting and USB power output functions on a single compact circuit board.
The module boosts the connected 3.7V battery voltage to a regulated 5V USB output, allowing compatible mobile phones, small electronic devices and USB-powered projects to be charged. Two USB Type-A output ports are provided for connecting USB devices.
Battery cells should be connected to the B+ and B− terminals with the correct polarity. Multiple 18650 cells may be connected in parallel to increase the total battery capacity, provided all cells have the same chemistry, voltage and condition.
The board is suitable for DIY power-bank cases, rechargeable emergency chargers, electronics projects, battery-box repairs and custom portable power supplies.
Important: The marking T = 1.0mm normally refers to the PCB thickness and not the electrical rating. Always verify the input connector, output-current marking and battery polarity on the actual board before installation.
Specifications
| Specification | Details |
|---|---|
| Product type | Mobile power-bank boost charging module |
| Model marking | H913-B V1.0 |
| Additional board marking | 0729HS |
| PCB thickness marking | T = 1.0mm |
| Supported battery | 3.7V lithium-ion battery |
| Recommended battery type | 18650 Li-ion cell |
| Battery configuration | 1S, single cell or multiple cells in parallel |
| Battery full-charge voltage | 4.2V |
| USB output voltage | 5V DC |
| Output ports | 2 × USB Type-A |
| Main functions | Battery charging, voltage boost and USB output |
| Battery connection | B+ and B− soldering terminals |
| Cell connection for extra capacity | Parallel connection only |
| Application | DIY mobile power bank and portable USB supply |
| Installation type | Solder connection |
| PCB thickness | Approximately 1.0mm, based on board marking |
| Package quantity | 1 piece |
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