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Twelve small green circuit boards with micro USB ports and adjustable boost chips

KEHIPI

KEHIPI 12PCS MIRO USB 18650 Li-ion Charger Boost Module 3.7V-27V TP4056

SKU CH-9JKP-C9V1Y

A pack of twelve micro-USB modules that charge 3.7 V 18650 cells at up to 1 A and provide a continuously adjustable 4.3 V to 27 V boost output at up to 2 A

  • Product color12PCS MIRO USB
  • Product weight0.05 kg
  • Charges 18650 cells at 1A via TP4056 controller
  • Boosts 3.7V up to adjustable 27V DC output
  • Delivers up to 2A discharge current for loads
  • Operates from 4.5-8V DC input sources
  • Pack of twelve compact modules for DIY projects

12-piece TP4056 charger kit

This pack contains twelve micro-USB modules that charge single 18650 lithium-ion cells at up to 1 A and provide a boost output adjustable from 4.3 V to 27 V. Makers and repair technicians can use them to add rechargeable power to portable instruments, sensor nodes or custom enclosures.

Solder-ready pins, watch the input range

Each board arrives with through-hole pads for USB power, battery terminals and the boost output, so installation is a matter of soldering four connections. The input must stay between 4.5 V and 8 V DC; feeding a higher voltage from a mislabelled adapter is the most common cause of damage.

1 A charge, 2 A boost with 27 V ceiling

The charger tops a 3.7 V cell at 4.2 V while the step-up side delivers up to 2 A for loads such as 5 V logic, 9 V motors or 12 V relays. Headroom ends at the 27 V adjustment limit or when the load draws more than 2 A, at which point the module enters protection.

How it compares

Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 56% of the 3,875 comparable items (median $23.99).

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Specifications

Product
Brand nameAITRIP
Product color12PCS MIRO USB
Size & build
Product weight0.05 kg

Questions about this item

How do I confirm the module is charging my 18650 correctly after wiring it?

Connect a multimeter to the BAT+ and BAT- pads; a steady 4.2 V reading while the LED shows charge means the TP4056 is delivering its 1 A maximum.

What comes in the pack and what extra parts will I need?

Twelve bare boost modules are included; you must supply a 4.5–8 V DC source, a micro-USB cable or soldered leads, and the 3.7 V 18650 cells yourself.

Which output voltage setting should I pick for a 12 V fan?

Turn the on-board potentiometer until the OUT+ terminal reads 12 V; the adjustable range spans 4.3–27 V so 12 V is well within limits.

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