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electrical:12v:self-jumpstarting

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electrical:12v:self-jumpstarting [2020/05/11 10:17]
frater_secessus [Self-jumpstarting] 		electrical:12v:self-jumpstarting [2020/06/23 11:14]
frater_secessus
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 Self-jumpstarting means jumpstarting one's own vehicle without the use of another vehicle.  The most common way to do this is by [[electrical:12v:alternator|combining]] house and chassis batteries. Self-jumpstarting means jumpstarting one's own vehicle without the use of another vehicle.  The most common way to do this is by [[electrical:12v:alternator|combining]] house and chassis batteries.
  
-It will be easiest on the system to combine the batteries and allow the starter battery to come up a bit instead of immediately attempting to start.   + 
-===== solenoids ===== +
-Solenoids/relays will automatically self-jumpstart assuming there is enough voltage in the starter battery to energize the solenoid. It is a mechanical connection and power will flow both ways. +
  
-===== voltage sensing relays =====+===== jumping from the house bank ===== 
 + 
 +It will be gentlest on the system to combine the batteries and allow the starter battery to come up a bit instead of immediately attempting to start.  
 + 
 +==== solenoids ==== 
 + 
 +Solenoids/relays //always// self-jumpstart assuming there is enough voltage in the starter battery to energize the solenoid. It is a mechanical connection and power will flow both ways. 
 + 
 +==== voltage sensing relays ====
  
 It is common for VSRs to have a button to combine the batteries for self-jumpstarting.   It is common for VSRs to have a button to combine the batteries for self-jumpstarting.  
-===== relays =====+ 
 +==== relays ====
  
 [[electrical:12v:alternator#isolators|Solid state isolators]] are diode based and will not allow power to flow from the house battery to the starter battery.  Therefore they cannot be used to self-jumpstart. [[electrical:12v:alternator#isolators|Solid state isolators]] are diode based and will not allow power to flow from the house battery to the starter battery.  Therefore they cannot be used to self-jumpstart.
 +
 +==== DC-DC chargers ====
 +
 +Some [[electrical:12v:b2b|DC-DC chargers]] with integrated [[electrical:solar:charge_controller|solar charge controllers]] can keep the starter battery maintained after the house batteries are charged.  This would help avoid the "dead starter battery" situation in the first place.
 +
 +[Note from secessus:  AFAIK none of the DC-DC chargers allow self-jumpstarting.  If anyone knows otherwise, please point me to the documentation.  Thanks!]
 +
 +
 +
  
 ===== jump packs ===== ===== jump packs =====
electrical/12v/self-jumpstarting.txt · Last modified: 2024/03/22 08:19 by frater_secessus

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