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electrical:12v:mandatory_dcdc [2023/05/09 14:32] frater_secessus [situations where DC-DC is effectively required] |
electrical:12v:mandatory_dcdc [2023/08/31 01:23] princess_fluffypants [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/ | + | However, some advanced |
- | 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. All other things being equal, | + | * Exotic |
- | * ...anything that increases the difference (higher alt voltage, lower bank voltage, loads on the bank) will increase current drawn from the alternator | + | * If one needs relatively-stable charge rates((direct-charging |
- | * ... and anything that decreases the difference (like rising bank State of Charge) will decrease the current. | + | * If you want to impose an arbitrary current limit((0.2C for Gel, 0.4C for lithium, etc)) |
- | * DC-DC chargers boost alternator voltage, maintaining | + | |
- | * if you want to impose an arbitrary current limit((0.2C for Gel, 0.4C for lithium, etc)) | + | |
* < | * < | ||
* < | * < | ||
- | ===== situations | + | ===== Situations |
+ | * Lead chemistry house batteries when not using solar, and the alternator is [[electrical: | ||
- | * lead house bank when alternator is [[electrical: | + | In this case DC-DC won't help with [[electrical: |
- | + | ||
- | + | ||
- | In this case DC-DC won't help with [[electrical: | + | |
+ | ===== List of popular DC-to-DC chargers ===== | ||
+ | * [[https:// | ||
+ | * More expensive brand, but generally good quality with good customer support/ | ||
+ | * [[https:// | ||
+ | * Less expensive, but kinda so-so quality and poor after-sale support | ||
+ | * //Editors Note:// Quality/ | ||
+ | * Weird " | ||
+ | * IMO, this one device can probably supply the needs of 90% of most van electrical system builds. | ||
+ | * They also sell a smaller 30 amp version, which is good for smaller vans/cars that might not need as much capacity | ||
+ | * [[https:// | ||
+ | * The largest DC-to-DC chargers on the market, offering up to 200 amp chargers. Some offer nice features like bi-directional charging, and an optional remote control which makes monitoring/ | ||
+ | * Well made, with good customer service and after-sales support. | ||
+ | * Expensive, like //really// expensive. | ||