Dc Dc Step Up Boost Module 4 3 27V Adjustable 18650 Charger

Meet the Dc Dc Step Up Boost Module 4.3–27V Adjustable 18650 Charger — a compact, all-in-one power solution for charging, boosting, and discharging lithium-ion cells. This versatile module takes a low DC input (4.5–8V) and provides a stable, continuously adjustable output from 4.3V up to 27V. It’s designed to charge 18650 Li-ion batteries (charging voltage 4.2V) with a maximum charging current of 1A, while also offering a built-in boost converter to raise voltage and a discharge function to meet varying device power needs. The integrated protection system includes overcharge, short-circuit, and overheat protection, helping keep both your battery and equipment safe. Its compact 33x24x4 mm footprint makes it ideal for DIY projects, portable power packs, and space-constrained applications.

Benefits & Tips

• All-in-one power solution: charge, boost, and discharge from a single compact module — great for DIY battery packs and portable power supplies.
• Adjustable output: freely set output from 4.3V to 27V to match your device requirements, while keeping charging safe at 4.2V and up to 1A.
• Protective design: built-in overcharge, short-circuit, and overheat protections help extend battery life and improve reliability in everyday projects.

Product Specifications

• Origin: Mainland China
• Type: Module
• Condition: New
• Input voltage: 4.5–8V DC
• Output voltage: 4.3–27V DC (continuously adjustable)
• Charging voltage: 4.2V DC
• Charging current: Max. 1A
• Discharge current: Max. 2A
• Protection: Overcharge protection included
• Product size: 33.00 x 24.00 x 4.00 mm (1.3 x 0.94 x 0.16 inch)

Package includes:

• 1 x Step Up Module

Warnings / Reminders

Note: Due to monitor and lighting variations, the actual color may differ from images. Please allow 1–2 cm of measurement deviation due to manual measurement.

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