Description
This compact board combines a lithium battery charger, protection circuitry, and a boost converter to deliver a stable 5 V USB output from a single-cell Li‑Ion/Li‑Po battery. Designed for makers and hobbyists, it’s perfect for creating lightweight USB chargers, wearable gadgets, IoT devices, and emergency power backups.
Key Features:
Dual-function module: Boost‑converter (3.7 – 5.5 V input → regulated 5 V output) combined with lithium‑battery charging and protection circuitry.
LED status indicators:
- Charging (e.g. flashing red)
- Fully charged (solid red or green)
- Discharging/output (blue light or flashing)
Integrated Charging & Boosting: Charges a 3.7 V lithium cell (via Micro‑USB or USB‑C input) and boosts the battery to a regulated 5 V output—great for powering USB devices.
POWER MODULE LITHIUM BATTERY
High integration: Internal MOSFETs for charge/discharge switching and temperature control.
High Performance: Built-in charging and discharging power MOS, charging current can be set, Z large charging current and Z large discharge current 1A.
Specifications:
Input Voltage: 3.7 V – 5.5 V Preset Charge Cut‑off: 4.2 V ± 1%
Output Voltage: 5.0 V USB Battery Discharge: Cut‑off ~2.9 V
Discharging Efficiency: ~85% at 3.7 V input and 1 A load
Charging Input Interface: Micro USB or USB‑C depending on variant
Weight: ~3 g Dimensions: ~23 × 18 × 10 mm
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