We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Six small green circuit boards with micro-USB ports and solder pads

KEHIPI

KEHIPI EC19 6PCS 2A USB 18650 Li-ion Charger Boost Module Power Adapter

SKU CH-ST6P-TV7GQ

A six-piece kit of adjustable boost modules that charge 3.7 V 18650 cells at up to 1 A and deliver 4.3–27 V output at up to 2 A from a 4.5–8 V source

  • Color6PCS MIRO USB
  • Weight1.13 ounces
  • Charges 18650 cells at up to 1A with 4.2V precision
  • Adjustable 4.3-27V DC output powers diverse DIY projects
  • Accepts 4.5-8V DC input from solar or USB sources
  • Delivers up to 2A discharge current for connected loads
  • Six compact 3.3x2.3cm modules ready for immediate integration

KEHIPI EC19 Boost Module Kit

This six-piece kit provides adjustable DC-DC step-up modules built around the TP4056 charging circuit. Each board accepts a 4.5-8V DC input and delivers a continuously adjustable 4.3-27V DC output. Makers and repair technicians can use them to charge 3.7V 18650 cells or power custom low-voltage projects.

Thermal and Power Behaviour

The modules operate at a maximum discharging current of 2A and a charging current of 1A with a fixed 4.2V charging voltage. Under normal loads the compact boards run cool without active cooling. Power draw scales with the configured output voltage and attached load.

Build Quality and Connectivity

Each green PCB measures 3.3x2.3cm and weighs approximately 1.13 ounces for the full set. Clearly labelled VIN+, BAT+, and OUT+ pads simplify soldering for DIY assembly. The small footprint allows integration into tight enclosures or breadboard layouts.

Highlights

  • Charges 18650 cells at up to 1A with 4.2V precision
  • Adjustable 4.3-27V DC output powers diverse DIY projects
  • Accepts 4.5-8V DC input from solar or USB sources
  • Delivers up to 2A discharge current for connected loads
  • Six compact 3.3x2.3cm modules ready for immediate integration

Specifications

BrandAITRIP
ModelEC19
Part NumberEC19
Color6PCS MIRO USB
Weight1.13 ounces

Questions about this item

How do I wire the TP4056 charging section and the adjustable boost output on the EC19 module?

Connect a 4.5–8 V DC source to the VIN+ port, the 18650 cell to the BAT+ port for 4.2 V charging at up to 1 A, then take the boosted 4.3–27 V output from the OUT+ port; the step people miss is setting the output voltage with the on-board potentiometer before applying a load.

What maintenance will the EC19 modules need over time?

The modules have no moving parts; long-term care is limited to keeping the solder joints clean, verifying the potentiometer still adjusts smoothly, and replacing any 18650 cell that no longer holds a 4.2 V charge.

At what point does the 2 A discharge limit become the bottleneck during continuous use?

The boost converter is rated for a maximum 2 A discharge current; sustained loads that draw more than 2 A from the OUT+ port will hit this limit first, causing voltage drop or thermal shutdown.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.