Dual Coin Cell Battery Holders In-series (H04R2x)

Q: Q: How much current do I get from a single H04R20?

A : Most CR2032 coin-cell batteries are about 200mAh capacity with a standard discharge current of 0.2mA and voltage of 3V. With two in series, you can get same capacity but double the voltage. The voltage is regulated back down to 3.3V to be compatible with other Hexabitz modules. You can also solder H04R20 modules together, connecting them in parallel, to get more capacity or use the sister module H04R10.

Description

H04R2x is a compact coin-cell lithium battery holder that fits two CR2032 batteries in series. The output voltage is provided through Hexabitz SMD edge-pad connectors (3.3V on top and GND on bottom).

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

Specifications

Technical Specifications

2 x CR2032 lithium coin-cell battery holders in series (+3.3V output).
Six power ports (+3.3V and GND).
2 x BLP2032SM-GTR SMD coin-cell holder with gold-plated contacts.
TPS76433DBVT 3.3V 0.15A LDO.

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)

Projects

Please visit this product projects on Hackster.io network.

BOM

H04R20 BOM

Item	MPN	MFN	Description	Quantity Per Module
BT1, BT2	BLP2032SM-GTR	MPD	Holder Coin Cell w/Gold Smd	2
C1	0603YC104K4T2A	AVX	Cap Ceramic 0.1uF 16V X7R 10% SMD 0603 125C Paper T/R	1
C2, C3	T491A106K010AT	Kemet	Cap Tant Solid 10uF 10V A CASE 10% (3.2 X 1.6 X 1.6mm) SMD 3216-18 3.8 Ohm 125C T/R	2
U1	TPS76433DBVT	Texas Instruments	Single Output Low Noise LDO, 150 mA, Fixed 3.3 V Output, 2.7 to 10 V Input, 5-pin SOT-23 (DBV), -40 to 125 degC, Green (RoHS & no Sb/Br)	1
PCB + PCBA				1
Item	MPN	MFN	Description	Quantity Per Module

Quickstart Guide

Download a PDF version here.

FAQ

Frequently Asked Questions

Q: How much current do I get from a single H04R20?

A: Most CR2032 coin-cell batteries are about 200mAh capacity with a standard discharge current of 0.2mA and voltage of 3V. With two in series, you can get same capacity but double the voltage. The voltage is regulated back down to 3.3V to be compatible with other Hexabitz modules. You can also solder H04R20 modules together, connecting them in parallel, to get more capacity or use the sister module H04R10.

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

Factsheet

Download a PDF version here.

Resources

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