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BrianG · 12.14.2005, 11:17 PM

Yes, but don't they use a battery isolator? It would just look like a device with three large terminals (two "in"s and one "out") which is just two diodes on a heatsink casing. Usually, each one powers specific parts of the vehicle, but are charged at the same time through the isolator. We have a 200kVA diesel generator at work and it uses only one battery (but what a large one it is!). I'll have to check out a dumptruck sometime.

Electricity needs a difference of potential and a connection to flow and both criteria are met if you have two batteries in parallel and one has a higher voltage than the other. Don't believe me? Find two batteries with different voltages and put an ammeter between the two + terminals (or between the two - terminals, just not between the + and - terminals) and measure the current.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	12.14.2005, 11:17 PM Yes, but don't they use a battery isolator? It would just look like a device with three large terminals (two "in"s and one "out") which is just two diodes on a heatsink casing. Usually, each one powers specific parts of the vehicle, but are charged at the same time through the isolator. We have a 200kVA diesel generator at work and it uses only one battery (but what a large one it is!). I'll have to check out a dumptruck sometime. Electricity needs a difference of potential and a connection to flow and both criteria are met if you have two batteries in parallel and one has a higher voltage than the other. Don't believe me? Find two batteries with different voltages and put an ammeter between the two + terminals (or between the two - terminals, just not between the + and - terminals) and measure the current.