Difference between revisions of "Batteries"
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All that's required is a salt and: battery. | All that's required is a salt and: battery. | ||
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| + | "When a good cell goes battery." | ||
| + | |||
| + | ==List== | ||
| + | * https://www.eevblog.com/forum/projects/coulomb-counter-ic-for-coin-cell-products/ - not many options for measuring current out of a coin cell, without drawing a notable amount of current. | ||
| + | * https://www.eevblog.com/forum/chat/rechargeable-alkalines/ - It turns out that alkalines are (or once were) rechargeable. someone would need to investigate. | ||
| + | * https://www.eevblog.com/forum/renewable-energy/are-deep-cycle-lead-acid-datasheets-a-scam/ - Uncertainty and Doubt with Lead Acid batteries and 'deep cycle' longevity. Someone suggests that the chargers are to blame - not the batteries. Some long term testing is in order, I think: with a load and some lead batteries (i would be you could use small ones, you probably don't need to use car batteries. start small...). | ||
| + | * https://hackaday.com/2025/01/10/aa-battery-performances-tested-so-get-the-most-for-your-money/ - "It’s always been Eneloop NiMh rechargable, and Energiner Max or Lithium. There have been candlepowerforums threads on it for decades. Most people just use a OPUS BT-C3400 to test AA, AAA, C, 18650." | ||
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==Tips/Techniques== | ==Tips/Techniques== | ||
===Cell vs. Battery=== | ===Cell vs. Battery=== | ||
A bit of semantic nonsense, but technically a battery is made up of cells. | A bit of semantic nonsense, but technically a battery is made up of cells. | ||
https://www.eevblog.com/forum/projects/biggest-battery-capacity-for-22-x-22-mm-case/ - cell vs. battery (cell is a single, battery is a collection of cells) | https://www.eevblog.com/forum/projects/biggest-battery-capacity-for-22-x-22-mm-case/ - cell vs. battery (cell is a single, battery is a collection of cells) | ||
| + | |||
| + | ===Counterfeit Capacities Over 3.6mAh=== | ||
| + | 3.5 or 3.6mah is the highest single 18650 cell you can buy. a couple amusing anecdotes. | ||
| + | * https://www.eevblog.com/forum/dodgy-technology/10ah-18650-cells/ | ||
===NiCads/NiMH=== | ===NiCads/NiMH=== | ||
Latest revision as of 12:36, 20 September 2025
All that's required is a salt and: battery.
"When a good cell goes battery."
List
- https://www.eevblog.com/forum/projects/coulomb-counter-ic-for-coin-cell-products/ - not many options for measuring current out of a coin cell, without drawing a notable amount of current.
- https://www.eevblog.com/forum/chat/rechargeable-alkalines/ - It turns out that alkalines are (or once were) rechargeable. someone would need to investigate.
- https://www.eevblog.com/forum/renewable-energy/are-deep-cycle-lead-acid-datasheets-a-scam/ - Uncertainty and Doubt with Lead Acid batteries and 'deep cycle' longevity. Someone suggests that the chargers are to blame - not the batteries. Some long term testing is in order, I think: with a load and some lead batteries (i would be you could use small ones, you probably don't need to use car batteries. start small...).
- https://hackaday.com/2025/01/10/aa-battery-performances-tested-so-get-the-most-for-your-money/ - "It’s always been Eneloop NiMh rechargable, and Energiner Max or Lithium. There have been candlepowerforums threads on it for decades. Most people just use a OPUS BT-C3400 to test AA, AAA, C, 18650."
Tips/Techniques
Cell vs. Battery
A bit of semantic nonsense, but technically a battery is made up of cells. https://www.eevblog.com/forum/projects/biggest-battery-capacity-for-22-x-22-mm-case/ - cell vs. battery (cell is a single, battery is a collection of cells)
Counterfeit Capacities Over 3.6mAh
3.5 or 3.6mah is the highest single 18650 cell you can buy. a couple amusing anecdotes.
NiCads/NiMH
Noise on Older Batteries
- https://www.eevblog.com/forum/metrology/diy-0-1-to-10hz-noise-amplifier/ -Page 3 or 4. nimh or nicads have more voltage noise as they reach EOL
