24 volt alternator charging system6/21/2023 ![]() Lithium Jump Starter Power Pack also charges mobile phone and other equipment ![]() I charge it approx once every 6 months, not that it needs it but I like to keep it full to the brim. It holds a charge for months and months.It is tucked away behind the seat in my van. The same result will be achieved by connecting the red jumper cable to the + / positive terminal marked “A” and the black jumper cable to the Earth terminal or Chassis of the bus.ĭo you have a classic “JUMPSTART STORY”? Use the comments at the end of the post and tell us what happened!Ī great gadget in these flat battery scenarios is this 12 volt battery jumper pack! I’ve had mine since 2014. Once the bus starts, quickly remove the jumper cables so that the bus alternator can take over the charging of the 24 Volt system. Run the car at higher revs for about one minute before attempting to start the bus/truck. What is happening in fact is that you are charging the one 12 Volt bus battery which in turn is sharing the charge with the other bus battery at 12 Volt. You may hear the revs on the car drop as the alternator starts to charge the truck/bus batteries. Note: Double check that the jumper cables are hooked to the same battery of the 24V system!! Now, hook the – (Negative/Earth/Black) jumper cable to the – (negative) terminal marked “B” in the diagram. Now, hook the – (Negative/Earth/Black) jumper cable to the Earth terminal (-/Negative) of the 12V car battery. Make sure that it does not touch anything else. Hook the + ( positive/ red) jumper cable to the Red (+) terminal of the 12V car battery and to the terminal on the 24 Volt system. If this is the same way your 24 Volt system is connected, the starting procedure is quite simple. The battery system is connected as in this diagram which is the most common setup for 24 Volt systems in trucks and buses: It consists of 2 x 1000 CCA 12 Volt batteries connected in Series to give 24 Volts. The motorhome has a 24 Volt starting battery configuration. ![]() As most know by now, I live in a motorhome (Bus). ![]() I will only speak about first hand experience in this post. Which 24 Volt systems can be jumped from a 12 Volt system? There are a few things to keep in mind and a few mistakes that can cost you big time, so, read carefully and make double sure you have the connections correct! Disclaimer: Everyone trying this method according to this post, do so at their own risk. Today we look at jump starting a 24 Volt system using a 12 Volt ordinary vehicle. Jump Start a 24 Volt truck from your 12 Volt car ![]()
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