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--- electrical:12v:self-jumpstarting [2017/10/11 16:02]
frater_secessus created
+++ electrical:12v:self-jumpstarting [2020/05/11 10:14]
frater_secessus [solenoids]
@@ Line 1: / Line 1: @@
 ====== Self-jumpstarting ======
-Self-jumpstarting means jumpstarting one's 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.
-isolators
+===== 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 =====
-jump packs
+It is common for VSRs to have a button to combine the batteries for self-jumpstarting.
+===== 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.
+===== jump packs =====
+[[https://amzn.to/2ITeBba|Lithium "jump packs"]] have become more popular.  Lithium-chemistry batteries can discharge quickly, so even relative small packs can jumpstart a car.
+'Dwellers may want to pick a jump pack that has 12v or USB outlets so it can have other uses.

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