1-100pcs 3.7V To 12V Mini DC-DC Boost Module Supports 5V/8V/9V/12V Output Lithium Battery Boost

High-concerned chemical : none Package : SMD is_d : Yes Dissipation Power : N/A Supply Voltage : 3.7V To 12V Application : Computer Type : Module Origin : Mainland China Condition : New Operating Temperature : N/A

Mini DC-DC Boost Converter 3.7V to 12V Step Up Module 5V 8V 9V 12V Adjustable Voltage Regulator for Lithium Battery DIY Key Features & Benefits Wide Input: 2.5V-5V – works with 3.7V Li-ion, dry cells, USB 5V.

Adjustable Output: 5V, 8V, 9V, or 12V via solder pads (default 12V).

Output Capability:

3.7V in: 5V/1A, 8V/0.5A, 9V/0.45A, 12V/0.3A

5V in: 8V/0.7A, 9V/0.7A, 12V/0.5A

Ultra-Compact: 22×11mm – fits tight spaces.

Low Standby: <1mA no‑load (LED off).

LED Indicator: Onboard LED (can be disabled). Product Description Need to boost a single Li‑ion cell (3.7V) to 5V, 9V, or 12V? This mini boost module is the perfect solution. Input 2.5-5V, output selectable (5/8/9/12V) via solder pads. Tiny 22×11mm size. From 3.7V input, get 5V/1A for Arduino or 12V/0.3A for small motors/LED strips. Extremely low no‑load current – ideal for battery‑powered projects. Perfect for power banks, flashlights, IoT devices. Quick Start Guide & Important Tips What It Does & What You Need This module does:

Boosts 2.5-5V to 5/8/9/12V (selectable)

Powers Li‑ion devices needing higher voltage This module does NOT: Step down, constant current output You will need: DC source (2.5-5V, e.g., 18650), multimeter (for checking) Package includes: Boost module × (as per SKU) ️ Important: Input must be lower than output (boost only). Input ≤5V, output ≥5V.

Current capability: See table. Do not exceed.

Heat: Module may get warm at full load – ensure ventilation.

Soldering: Disconnect power before changing output pads.

LED: Can be disabled by opening the LED solder pad. Output Current Reference Common Questions Wrong output voltage? Check solder pads A/B configuration. Default is 12V.

Low output current?

Check input power capability

Load may exceed module rating

Higher input voltage (5V) gives better output current

Module getting hot? Normal under load. Reduce load or improve cooling if too hot.

Can I use 1.5V AA battery? No – minimum input is 2.5V. Use two AA in series (3V) or a Li‑ion cell.

Disable LED? Open the solder pad next to the LED to turn it off. Specifications Input Voltage: DC 2.5V – 5V

Output Voltage: 5V / 8V / 9V / 12V (pad‑selectable)

Output Current: See table (max 1A @5V)

Efficiency: 85-90%

No‑load Current: <1mA (LED off)

Switching Frequency: ~1MHz

Dimensions: 22×11×4mm

Weight: ~2g Note: Due to manual measurement, allow 1‑3mm error. Colors may vary slightly.

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