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electrical:12v:directcharginglfp [2024/04/04 11:51] frater_secessus [reasons NOT to attempt direct charging] temp |
electrical:12v:directcharginglfp [2024/06/10 16:37] frater_secessus [reasons NOT to attempt direct charging] |
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If the SoC was very low (near cutoff) the combiner would slightly faster, ~7.5 minutes. | If the SoC was very low (near cutoff) the combiner would slightly faster, ~7.5 minutes. | ||
- | ===== reasons NOT to attempt | + | ===== reasons NOT to direct |
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[Note: | [Note: | ||
+ | ==== assessment phase ==== | ||
- | |||
- | If you are still interested, here is one approach to assessing your setup for direct charging lithium. | ||
- pay attention to the **chassis' | - pay attention to the **chassis' | ||
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- now make a **sanity check** about the ability of alternator, your isolator, and your Li battery to cooperate. | - now make a **sanity check** about the ability of alternator, your isolator, and your Li battery to cooperate. | ||
- ensure the **fuse** between your chassis and battery bank is sized so //you cannot draw more than the alternator and wiring can handle// | - ensure the **fuse** between your chassis and battery bank is sized so //you cannot draw more than the alternator and wiring can handle// | ||
- | - make the first test run a brief one and with the Li fairly well charged.((higher states of charge will typically lessen current demands to some degree))((if you have paralleled batteries you might want to do this step with just one in place to get a feel for the draw.)) | ||
- | - test it with a drive. | ||
- | - repeat the last two steps with the Li bank at lower and lower states of charge, down to the lowest state of charge you expect to recharge from alternator. | ||
- | - celebrate | ||
- | **Caveats**: | + | ==== testing phase ==== |
+ | |||
+ | - make the first test run a brief one and with the Li well-charged.((higher states of charge will reduce current demand)) | ||
+ | - if solar or other charging source is present, disconnect those chargers and repeat #1.((other chargers will push up apparent bank voltage, which would decrease current demanded of the alternator)) | ||
+ | - repeat steps above with the Li bank at lower and lower states of charge, down to the lowest state of charge you expect to recharge from alternator. | ||
+ | |||
+ | |||
+ | ==== caveats ==== | ||
* Only alternator charge while driving ([[rv: | * Only alternator charge while driving ([[rv: |