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opinion:frater_secessus:endamps [2021/05/05 11:39] frater_secessus [How do I know when my lead battery fully charged?] |
opinion:frater_secessus:endamps [2021/05/05 11:54] frater_secessus [WTF does that even mean?] |
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So how do we know when the battery is fully charged? | So how do we know when the battery is fully charged? | ||
- | **A lead battery is charged when acceptance at Absorption voltage has dropped to a specified value.** | + | **A lead battery is charged when acceptance at Absorption voltage has dropped to a small fraction of its rated capacity.** |
===== WTF does that even mean? ===== | ===== WTF does that even mean? ===== | ||
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- | > has dropped to a specified level. | + | > has dropped to a small fraction of its rated capacity |
- | This is where the battery monitor shines. | + | Lead battery manufacturers typically specify Absorping until acceptance is some small percentage of [[electrical: |
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- | These values can be expressed in different forms but they all mean the same thing: | + | |
^ fraction | ^ fraction | ||
| C/200 - C/100 | 0.5% - 1% of C | 0.005C - 0.010C | | C/200 - C/100 | 0.5% - 1% of C | 0.005C - 0.010C | ||
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+ | As you can see the Amps in question are quite small; | ||
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+ | ===== putting it all together ===== | ||
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+ | Battery X (100Ah) is fully charged when the battery is only accepting 0.5A to 1A at 14.5v.((Totally made-up example. | ||
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A deep-cyle battery discharged to 50% typically takes [[opinion: | A deep-cyle battery discharged to 50% typically takes [[opinion: | ||
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- | ===== putting it all together ===== | ||
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- | Battery X (100Ah) is fully charged when the battery is only accepting 0.5A to 1A at 14.5v. | ||