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electrical:12v:charging [2020/05/13 12:17] frater_secessus [charging while using the 12v system] |
electrical:12v:charging [2020/10/18 11:54] frater_secessus [bulk stage] |
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- | [[lifestyle: | + | [[lifestyle: |
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+ | > “Three stage chargers are easier on your batteries, charge them faster, fuller and help you use less water”((https:// | ||
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+ | > A [ [[electrical: | ||
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+ | > Charging lead acid batteries is not something that you decide to do, or start or stop. The old statement, "I need to idle the engine for a few minutes to "top off" the batteries." | ||
====== charging deep cycle batteries ====== | ====== charging deep cycle batteries ====== | ||
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===== three stage charging ===== | ===== three stage charging ===== | ||
- | Three stage or " | + | Three stage((some mfg claim 4 or more charging stages, including equalization or proprietary stages. |
SternWake sums up smart charging: | SternWake sums up smart charging: | ||
- | > "Bulk rate is maximum amps the charging source can supply until the absorption voltage is reached, at that point the amps required to hold the ABSV will taper. The longer the battery is held at ABSV, the more the amps required to hold ABSV will taper. At some point, either time, or the amps required to hold ABSV fall below a threshold and triggers float mode." | + | > "Bulk rate is maximum amps the charging source can supply until the absorption voltage is reached, at that point the amps required to hold the ABSV((Vabs, absorption voltage)) |
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==== bulk stage ==== | ==== bulk stage ==== | ||
- | The bulk stage is a fast and furious rush to get **maximum power returned to the battery bank**. | + | The bulk stage is a fast and furious rush to get **maximum power((or max // |
This stage **begins when charging starts** (as when the sun comes up) and **ends when the battery climbs to the acceptance voltage setpoint**, 14.8v in our T-105 example. | This stage **begins when charging starts** (as when the sun comes up) and **ends when the battery climbs to the acceptance voltage setpoint**, 14.8v in our T-105 example. | ||
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Some controllers will allow the user to configure the time or ratio of capacity/ | Some controllers will allow the user to configure the time or ratio of capacity/ | ||
> If your charge controller only holds [absorption] voltage for an hour or two, that is likely not enough time. As long as [there is a load] and you cycle the battery daily, you could set float voltage to 14.8v((for example - secessus)) [to match absorption] without worry. Only when you stop cycling the battery do you need to return float voltage to more regular 13.2v((for example - secessus)) levels. Premature application of float voltage by automatic charging sources is a battery killer.((http:// | > If your charge controller only holds [absorption] voltage for an hour or two, that is likely not enough time. As long as [there is a load] and you cycle the battery daily, you could set float voltage to 14.8v((for example - secessus)) [to match absorption] without worry. Only when you stop cycling the battery do you need to return float voltage to more regular 13.2v((for example - secessus)) levels. Premature application of float voltage by automatic charging sources is a battery killer.((http:// | ||
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+ | If Absorption cannot be completed in the max amount of time configurable in the controller (due to damaged/old batteries), **charging at the minimum rate and/or at higher voltage may help [[electrical: | ||
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Common Vfloat values range between 13.2v for stored batteries to 13.8v for banks that are deep cycled each day. | Common Vfloat values range between 13.2v for stored batteries to 13.8v for banks that are deep cycled each day. | ||
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+ | also see [[electrical: | ||