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electrical:12v:drop-in_lifepo4

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electrical:12v:drop-in_lifepo4 [2022/06/16 23:16]
frater_secessus [cell balancing]
electrical:12v:drop-in_lifepo4 [2022/07/04 13:11]
frater_secessus [myth: you must use DC-DC for alternator charging Li]
Line 249: Line 249:
 Here an order of operations one might use to assess whether or not isolator charging will work in a given install: Here an order of operations one might use to assess whether or not isolator charging will work in a given install:
  
-  - Read and understand your Li battery manufacturer's charging specs+  - Read and understand your Li battery manufacturer's charging specs - undercharging is fine((assuming one stays above 20% State of Charge)); overcharging is less so but is relatively rare in an isolator context.
   - Read and understand your alternator's specs   - Read and understand your alternator's specs
   - Read and understand your isolator's specs and functionality   - Read and understand your isolator's specs and functionality
   - observe your vehicle's chassis voltage during normal operation - note that the voltage //at the battery's location// will likely be lower due to long wiring and also lower when the wiring is carrying a hefty charging current   - observe your vehicle's chassis voltage during normal operation - note that the voltage //at the battery's location// will likely be lower due to long wiring and also lower when the wiring is carrying a hefty charging current
-  - decide whether this will work for your alternator, your isolator, and your Li battery+  - make a first approximation about the ability of alternator, your isolator, and your Li battery to cooperate
   - install [[electrical:12v:battery_monitor|a battery monitor]] so you can observe current and voltage at the battery.  Or use the battery's own BT access.   - install [[electrical:12v:battery_monitor|a battery monitor]] so you can observe current and voltage at the battery.  Or use the battery's own BT access.
   - 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))  Start the engine and see if the charging current and voltage is acceptable.  Turn off the engine.   - 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))  Start the engine and see if the charging current and voltage is acceptable.  Turn off the engine.
electrical/12v/drop-in_lifepo4.txt ยท Last modified: 2024/04/12 23:02 by frater_secessus