Dual Coin Cell Battery Holders In-parallel (H04R1x)

Q: Q: How much current do I get from a single H04R10?

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.

Q: Q: What happens if I have another higher voltage source in my board?

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.

Description

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.

Specifications

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)

Projects

Please visit this product projects on Hackster.io network.

BOM

H04R10 BOM

Item	MPN	MFN	Description	Cost Per Unit	Tooltip	Quantity Per Module	Cost Per Module
BT1, BT2	BLP2032SM-GTR	MPD	Holder Coin Cell w/Gold Smd	$0.7420	At qty. 100	2	$1.4840
D1	BAT54JFILM	STMicroelectronics	Diode Small Signal Schottky 40V 0.3A Automotive 2-Pin SOD-323 T/R	$0.1560	At qty. 100	1	$0.1560
PCB + PCBA				$0.6000	At qty. 1500	1	$0.6000
MISC			Shipping, taxes and other fees	$0.4000	At qty. 1500	1	$0.4000
Hexabitz Markup			33.33%	$1.3200		1	$1.3200
Payment Processing Fees			3.00%	$0.0965		1	$0.0965
Total Retail Cost							$4.0565
Listed Retail Price							$4.1000
Item	MPN	MFN	Description	Cost Per Unit	Tooltip	Quantity Per Module	Cost Per Module

Quickstart Guide

Download a PDF version here.

FAQ

Frequently Asked Questions

Q: How much current do I get from a single H04R10?

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.

Q: What happens if I have another higher voltage source in my board?

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.

Factsheet