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electrical:12v:mandatory_dcdc [2023/05/09 14:18] frater_secessus [situations where DC-DC is effectively required] |
electrical:12v:mandatory_dcdc [2024/07/15 13:15] (current) frater_secessus [Is DC-DC charging mandatory?] |
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====== Is DC-DC charging mandatory? ====== | ====== Is DC-DC charging mandatory? ====== | ||
- | Death and taxes are mandatory. | + | Death and taxes are mandatory. |
+ | In many/most situations, direct-charging the house bank with [[electrical: | ||
- | In many/most situations direct-charging | + | However, **some use cases may require a DC-to-DC charger**. These are much more intelligent (and expensive) devices that sit in between the vehicle batteries and the house batteries, and actively adjust |
- | There //are// scenarios where one may want to [[electrical: | + | **Note:** This article is just the TL;DR of DC-DC charger options. |
- | ===== situations | + | ===== Situations |
- | * when the vehicle has a smart (variable-voltage) alternator, | + | * When the vehicle has a smart (variable-voltage) alternator |
- | * small alternators vs. ginormous battery banks of any chemistry | + | * Common on European vehicles, and on American vehicles newer than ~2017 |
- | * exotic | + | * Small alternators vs. ginormous battery banks of //any// chemistry |
- | * if one needs relatively-stable charge rates((Direct-charging | + | * Exotic |
- | * if you want to impose an arbitrary current limit((0.2C for Gel, 0.4C for lithium, etc)) | + | * If one needs relatively-stable charge rates((direct-charging |
+ | * If you want to impose an arbitrary current limit((0.2C for Gel, 0.4C for lithium, etc)) | ||
+ | * when the alternator is the only charging source for the lead-chemistry house batteries. In this case DC-DC won't help with [[electrical: | ||
* < | * < | ||
* < | * < | ||
- | ===== situations | + | ===== Situations |
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- | * lead house bank when alternator is [[electrical: | + | |
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- | In this case DC-DC won't help with [[electrical: | + | |
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+ | * when the alternator is the sole charging source for LiFePO4. | ||