- #1
Lyyle Morgan
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- LEDs on CR2032?
I want to run a 2' multicolor LED strip with 2 CR2032 batteries. Is this possible?
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Can a 2' Multicolor LED Strip Be Powered by Two CR2032 Batteries?
- Thread starter Lyyle Morgan
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Discussion Overview
The discussion revolves around the feasibility of powering a 2' multicolor LED strip using two CR2032 batteries. Participants explore the technical specifications of the batteries and LED strip, as well as alternative power sources.
Discussion Character
- Technical explanation
- Debate/contested
Main Points Raised
- One participant questions the number of LEDs on the strip, suggesting that this information is crucial for determining power requirements.
- Another participant asks about the terminal voltage and capacity of the CR2032 batteries, as well as the input specifications for the LED strip.
- Some participants argue that CR2032 batteries are not suitable for powering the LED strip for an extended period due to their low current capacity and design for low-drain applications.
- One participant suggests using Zinc-Manganese Dioxide (Zn-MnO2) batteries instead, citing their higher capacity and suitability for the application.
- Another participant emphasizes the need for the original poster to look up the specifications of the LED strip to assess compatibility with the CR2032 batteries.
- A participant provides detailed specifications for the CR2032 battery, including its open circuit voltage, maximum continuous current, and nominal capacity.
- Concerns are raised about the load current requirements of LED strips, which may exceed the capabilities of the CR2032 batteries, leading to voltage drops.
Areas of Agreement / Disagreement
Participants generally disagree on the feasibility of using CR2032 batteries for the LED strip, with some advocating for alternative battery types due to the limitations of the CR2032.
Contextual Notes
Participants note the importance of specific technical details, such as the LED strip's voltage and current requirements, which remain unspecified in the discussion.
- #2
Gordianus
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Internet rules say that writing with caps on is equivalent to yelling. Having said that, how many leds have your strip? [Note: all caps OP has been fixed by the Mentors]
- #3
berkeman
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What is the terminal voltage of a CR2032 button battery? What is the A*hr capacity rating of a CR2032? What is the input voltage and current specified on the datasheet for your LED strip?
Do you know how to build/use buck and boost DC-DC converters?
Do you know how to build/use buck and boost DC-DC converters?
- #4
Tom.G
Science Advisor
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Not for long.
The CR series batteries are designed for very low current application with a few years usable life.
You would be better off using Zinc-Maganese Dioxide (Zn-MnO2) batteries. They are commonly called Alkaline batteries. The smallest I know of are the size "N" cell, about 30mm long x 12mm dia.
Cr2032
Lithium/Manganese Dioxide
Open Circuit: 3.0V
Max continuous Current: 6mA
Nominal Capacity: 245mAh @170uA and 2.0V cutoff
Above from:
https://www.duracell.com/wp-content/uploads/2021/06/CR2032CH_245mAh-CS.pdf
Cheers,
Tom
The CR series batteries are designed for very low current application with a few years usable life.
You would be better off using Zinc-Maganese Dioxide (Zn-MnO2) batteries. They are commonly called Alkaline batteries. The smallest I know of are the size "N" cell, about 30mm long x 12mm dia.
Cr2032
Lithium/Manganese Dioxide
Open Circuit: 3.0V
Max continuous Current: 6mA
Nominal Capacity: 245mAh @170uA and 2.0V cutoff
Above from:
https://www.duracell.com/wp-content/uploads/2021/06/CR2032CH_245mAh-CS.pdf
Cheers,
Tom
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- #5
Lyyle Morgan
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Thanks for the input, but I don’t have the answers to your questions. This is just a starting point to an idea I have. Just want to know if it’s even possible. Thanks againberkeman said:
- #6
Lyyle Morgan
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Hi Tom. Thanks for speaking in a way I can understand. I’m looking to power the strip for a couple of hours. Just wondering if this is even possible. I’ve found a case that holds 2 CR2032s and has wires leading out. Wondering if the wires could be connected to a 2’ strip of LEDs. Thanks again for getting back to me. LyleTom.G said:
- #7
berkeman
Admin
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The point of my questions was for you to look that information up. That is how you answer your original question of whether it is possible.Lyyle Morgan said:
- #8
Lyyle Morgan
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The round shape of the CR2032 is perfect for what I need. I’m not sure how I could mount the N. ThanksTom.G said:
- #9
Babadag
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I agree with Tom.G
First, in my opinion, CR 2032 supplies 3 V and Led strip requires-5 to 24 V -depending on type.
The load current for LED strips may be 2400 to 7200 mA but CR2032 capacity it is only 235 mAh that means 235/3600=0.06528 mA that means if itsupplies a 0.06528 mA load the voltage will be only 2 V [minimum level] in an hour.
CR2032 resistance Rdc≈15 kΩ and LED Strip load resistance is 3/7.2=0.417 Ω that means a short-circuit for CR2032.
First, in my opinion, CR 2032 supplies 3 V and Led strip requires-5 to 24 V -depending on type.
The load current for LED strips may be 2400 to 7200 mA but CR2032 capacity it is only 235 mAh that means 235/3600=0.06528 mA that means if itsupplies a 0.06528 mA load the voltage will be only 2 V [minimum level] in an hour.
CR2032 resistance Rdc≈15 kΩ and LED Strip load resistance is 3/7.2=0.417 Ω that means a short-circuit for CR2032.
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