J5019 HW-357 TP4056 Lithium Battery Charger & DC-DC Boost Module
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৳ 75.00৳ 100.00 (-25%)
The J5019 Lithium Battery Charger & DC-DC Boost Module is an all-in-one charging and voltage step-up solution for 3.7V/4.2V lithium batteries (like 18650s). Featuring a built-in micro-USB charging port and an adjustable potentiometer, it allows you to charge your battery while simultaneously boosting the output up to 27V. This ultra-compact module is ideal for DIY power banks, small electronics projects, and custom mini-UPS systems for WiFi routers.
Full Product Description
The J5019 (HW-357) Lithium Battery Charger & DC-DC Boost Module is an all-in-one power management board designed for charging 1S single-cell lithium batteries while stepping up the output voltage. This highly efficient, dual-function hardware combines a TP4056 linear charging integrated circuit with an on-board adjustable booster converter. It allows you to draw power from a standard 5V USB source or external DC input pads (4.5V to 8V) to charge 3.7V/4.2V nominal cells (like 18650, 14500, or LiPo) while simultaneously powering an external load.
By rotating the precise, top-mounted multi-turn potentiometer, the user can smoothly regulate the output voltage between 4.3V and 27V DC. This unique “simultaneous charge-and-discharge” functionality makes it the quintessential choice for engineers, students, and DIY makers building uninterrupted back-up systems. It is exceptionally useful for constructing micro-UPS configurations for WiFi routers or network ONUs, creating rechargeable multi-meter modifications, and supplying clean power to low-draw Arduino sensor nodes.
Key Product Features
- Dual Simultaneous Working Mode: Operates as a stable 1A battery charger manager while keeping the boost output circuit active to handle active loads without performance drops.
- Ultra-Flexible Output Boosting: Continuously adjustable output voltage up to 27V gives you total control over powering devices requiring higher thresholds than the cell itself. [1, 2]
- On-Board Visual Status Indicators: Integrated dual SMD LEDs flash distinctive colors to clearly communicate real-time charging status and charge completion states. [3, 4]
- High Efficiency Conversion Topology: Delivers conversion rates up to 93%, optimizing battery runtimes and reducing heat buildup inside compact spaces. [5, 6]
- Dual Power Input Terminals: Features a micro-USB female interface alongside convenient raw wiring solder pads for alternative power setups, like solar panels.
Technical Specifications
| Parameter | Details |
|---|---|
| Model Number | J5019 / HW-357 |
| Core Charging IC | TP4056 Linear Charger |
| Input Voltage Range | 4.5V – 8V DC (5V Micro-USB standard) |
| Supported Batteries | 3.7V / 4.2V Lithium-Ion & Lithium-Polymer (e.g., 18650) |
| Max Charging / Discharging Current | 1A Max Charge / 2A Max Discharge Peak |
| Adjustable Output Voltage | 4.3V – 27V DC (Counter-clockwise rotation boosts voltage) |
| Reference Current Limits | 5V @ 1.4A, 9V @ 0.8A, 12V @ 0.6A |
| Quiescent Current Consumption | ~0.5 mA static draw |
| Physical Dimensions | 33mm × 23mm × 10mm (Approx. 1.3″ x 0.92″) |
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