Can rechargeable batteries last for 3-4 years with 24h use at 5-15 volts?

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Discussion Overview

The discussion revolves around the feasibility of using rechargeable batteries that can last for 3-4 years with continuous use (24 hours a day) at voltages between 5 to 15 volts. Participants explore various battery technologies and configurations suitable for this requirement, including flow batteries and other alternatives.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • Some participants inquire about the specific requirements for battery size and performance, emphasizing the need for batteries that can charge faster than they discharge.
  • There is mention of using flow batteries, but questions arise regarding their size and charging capabilities.
  • One participant describes a device that requires two batteries: one to power the device and another to be charged by the device's power source, which introduces complexity in battery selection.
  • Concerns are raised about the lack of clarity regarding the current load required by the device, which is crucial for determining appropriate battery specifications.
  • Some participants express skepticism about the feasibility of achieving the desired battery performance within the specified size constraints, particularly regarding amp-hour capacity.
  • Discussions include the potential use of lead-acid batteries and modifications of existing battery technologies, such as those from cordless tools.
  • Participants challenge each other's understanding of battery specifications, particularly the relationship between voltage and amp-hour capacity.
  • There are requests for links to potential solutions, with a specific mention of the need for resources available in Poland.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the feasibility of the proposed battery requirements. There are multiple competing views regarding the specifications needed, and the discussion remains unresolved regarding the best approach to meet the outlined needs.

Contextual Notes

Participants express uncertainty about the exact current requirements for the device, which affects the discussion on battery selection. There are also limitations in the clarity of the specifications provided by the original poster, leading to confusion and varied interpretations among participants.

  • #31
A 1.5VDC battery with a low enough discharge rate will last for a few years, like the motherboard battery in your computer.
 
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  • #32
MXM13 said:
Any rechargeable battery won't do in the condition of constant use 24/24h, I need it to last for at least few years that's why I asked the question in the first place, and somehow people started being very negative instead of understanding what I was saying and being constructive

For how long battery can work depends on its capacity and the current you need to draw, do you understand that much? If you need 1 nA current, 1 Ah battery will last 32 years. As long as you don't tell us more details you are wasting your time and our time.
 
  • #33
phinds said:
Excellent point.
Go to the first page, read the description of what I'm doing and you'll understand why i need a rechargeable battery.
I do not need a source of energy, I need a solution to the delay problem and rechargeable batteries seemed to be a simple answer to it.
 
  • #34
That's enough trolling.
 
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