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electrical:12v:self-jumpstarting

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electrical:12v:self-jumpstarting [2022/04/30 10:41]
frater_secessus [Self-jumpstarting]
electrical:12v:self-jumpstarting [2023/06/23 14:13]
frater_secessus [diode isolators] ctek exception
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 Self-jumpstarting means jumpstarting one's own vehicle without the use of another vehicle.  It's done by [[electrical:12v:alternator|combining]] house and chassis batteries by one of several methods discussed below.  Self-jumpstarting means jumpstarting one's own vehicle without the use of another vehicle.  It's done by [[electrical:12v:alternator|combining]] house and chassis batteries by one of several methods discussed below. 
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-Note:  regardless of specific method used, it will be gentlest on the system to combine the batteries and wait a short time for the starter battery to come up a bit instead of immediately attempting to start. This will minimize the amount of current flowing from house bank to vehicle chassis. +Note:  regardless of specific method used, it will be gentlest on the system to combine the batteries and wait for the starter battery to come up instead of immediately attempting to start. This will minimize the amount of current flowing from house bank to vehicle chassis. This may be especially important with Li chemistries that have BMS protections
  
 ===== jumping from the house bank ===== ===== jumping from the house bank =====
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   * [[https://amzn.to/3h5iMUd|Victron CT]] - user-added wiring to "start assist" terminal   * [[https://amzn.to/3h5iMUd|Victron CT]] - user-added wiring to "start assist" terminal
   * Precision Circuits [[http://precisioncircuitsinc.com/product/battery-isolation-manager-2/|BIM]] and [[https://amzn.to/3c6XwMv|Li-BIM]] - user added wiring to "sig" terminal((http://www.precisioncircuitsinc.com/wp-content/uploads/2017/06/00-10041-2xx-Battery-Isolation-Manager-Rev7-1.pdf)) - see [[https://www.explorist.life/how-to-wire-a-li-bim-battery-isolator/|this article]]   * Precision Circuits [[http://precisioncircuitsinc.com/product/battery-isolation-manager-2/|BIM]] and [[https://amzn.to/3c6XwMv|Li-BIM]] - user added wiring to "sig" terminal((http://www.precisioncircuitsinc.com/wp-content/uploads/2017/06/00-10041-2xx-Battery-Isolation-Manager-Rev7-1.pdf)) - see [[https://www.explorist.life/how-to-wire-a-li-bim-battery-isolator/|this article]]
 +  * [[https://amzn.to/3CHoTt4|Blue Sea ML-ACR]] can combine banks manually or with the included remote switch
  
  
 ==== diode isolators ==== ==== diode isolators ====
  
-[[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 on their own (see [[electrical:12v:self-jumpstarting#adding_self-jumpstart_to_diode_isolators_and_dc-dc_chargers|below]]). +[[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 on their own (see [[electrical:12v:self-jumpstarting#adding_self-jumpstart_to_diode_isolators_and_dc-dc_chargers|below]]), including the Ctek exception
 ==== DC-DC chargers ==== ==== DC-DC chargers ====
  
electrical/12v/self-jumpstarting.txt · Last modified: 2024/03/22 08:19 by frater_secessus