shop/ circuitrocks/ 2 channel 18650 battery holder protection

A compact battery holder board designed for two 18650 lithium-ion batteries. It provides charging, protection, and regulated power output for portable electronics projects.

Features:

  • Holds 2 × 18650 batteries
  • Built-in charging circuit
  • Overcharge protection
  • Over-discharge protection
  • Micro USB charging input
  • Charge current: about 0.5A
  • Input voltage: 5V–8V
  • Up to 5V / 2A output
  • Additional 3V / 1A output
  • LED charging status indicator
  • USB output with power switch

Applications:

  • Arduino projects
  • ESP32 projects
  • Raspberry Pi builds
  • Portable electronics
  • Robotics
  • DIY power banks
  • Battery-powered prototypes

FAQ

Will this ship from Manila?

Yes — all stock ships from our Quezon City warehouse. Order before 4 PM weekdays for same-day cutoff via J&T or LBC.

Do you ship nationwide?

Yes. Metro Manila usually arrives next-day; provincial 1–3 working days.

Can I get this on a school PO or class order?

Yes — we accept Purchase Orders from accredited schools and universities. Contact us with your PO details and we'll process it.

Is this compatible with Arduino, ESP32, or Raspberry Pi?

Most parts work with common maker boards — check the description for specific pinout / voltage notes. If you're unsure, send us a message before ordering.

What's your return policy?

7-day inspection window for DOA units. Email proof of issue and we'll ship a replacement or refund. Used / installed parts are not returnable unless faulty.

Do you offer technical support?

Yes — questions land on our forum or via email, weekday or weekend. We've actually wired up most of what we sell.

Build with this board

// from learn.circuit.rocks

Notes from the bench

// from blog.circuit.rocks

Ask the community

// from forum.circuit.rocks