Dual Coin Cell Battery Holders In-parallel (H04R1x)


2 x CR2032 Coin Cell Lithium Battery Holder In-parallel (3.0V output)

Stage: Production

19 in stock (can be backordered)


H04R1x is a compact coin-cell lithium battery holder that fits two CR2032 batteries in parallel. The output voltage is provided through Hexabitz SMD edge-pad connectors (3.0V on top and GND on bottom).

Note: This module does not ship with coin-cell batteries.


Technical Specifications

  • 2 x CR2032 lithium coin-cell battery holders in parallel (+3.0V output).
  • Six power ports (+3.0V and GND).
  • 2 x BLP2032SM-GTR SMD coin-cell holder with gold-plated contacts.
  • BAT54JFILM 40V 0.3A reverse current protection Schottky diode. (Can be shorted with a solder jumper.)

Physical Properties

  • Shape: Hexagon
  • Size: 30 mm short diagonal
  • Area: 7.8 cm^2
  • Weight: 4 g
  • Soldermask Color: Dark green
  • Finish: ENIG (gold) or HASL-LF (tin)


Please visit this product projects on Hackster.io network.


H04R10 BOM

Quickstart Guide

Download a PDF version here.


Frequently Asked Questions

A: Most CR2032 coin-cell batteries are about 200mAh capacity with a standard discharge current of 0.2mA. With two in parallel, you can get up to 450-500mAh of each H04R10 module.

A: There is a reverse protection Schottky diode on H04R10 that prevents current from flowing back into the coin-cell battery in case you have higher voltage (e.g., 3.3V or 5V) applied at the same time. Note that although Schottky diodes have low forward voltage drop, the drop can reach 300mV at the mentioned battery discharge rate. To avoid having a lower output voltage (3-0.3 = 2.7V), you can short the reverse protection diode on H04R10 with a solder jumper.

Have more questions? Please check our main FAQ page and feel free to contact us for any unanswered questions.


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  • Schematics (PDF)
  • Hardware Design Files (Circuit Maker)
  • Documentation / Factsheet (PDF)
  • Projects & Examples: Please check our account on Hackster.io for demo projects and examples.