User Tools

Site Tools


opinion:frater_secessus:lfprationality

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
opinion:frater_secessus:lfprationality [2024/03/21 20:29]
frater_secessus [limiting current from the alternator]
opinion:frater_secessus:lfprationality [2024/03/21 20:30]
frater_secessus [limiting current from the alternator]
Line 71: Line 71:
   * **theory** tells us that I=V/R.  This means that current will be the ([alternator voltage] - [resting voltage of the battery] / total resistance in the circuit.   We almost always know the voltage part but few know the resistance of their charging circuit.  After an observation we can back into that value.    * **theory** tells us that I=V/R.  This means that current will be the ([alternator voltage] - [resting voltage of the battery] / total resistance in the circuit.   We almost always know the voltage part but few know the resistance of their charging circuit.  After an observation we can back into that value. 
   * an **often-repeated (and wrong)** answer is 200A, because the BMS cuts off at 1C.    * an **often-repeated (and wrong)** answer is 200A, because the BMS cuts off at 1C. 
-  * **testing** tells us us(([[electrical:12v:directcharginglfp|article]])) +  * **testing** tells us(([[electrical:12v:directcharginglfp|article]])) 
     * current at middling states of charge averages ~0.2C, or 40A.     * current at middling states of charge averages ~0.2C, or 40A.
     * current at high states of charge((upper knee)) averages ~0.1C, or 20A.       * current at high states of charge((upper knee)) averages ~0.1C, or 20A.  
Line 100: Line 100:
 === 300Ah example === === 300Ah example ===
  
-Once again, 300A bank+Once again, 300Ah bank
  
   * the DC-DC will charge at 50A    * the DC-DC will charge at 50A 
opinion/frater_secessus/lfprationality.txt ยท Last modified: 2024/03/21 20:30 by frater_secessus