How To Charge A Diesel With Two Batteries. Step 1 Disconnect the negative terminal on one battery followed by the positive terminal. This has its advantages it provides a totally independent means of charging the start battery as well.
Your batteries will charge not at the listed voltageusually 12 voltsbut 2 to 4 volts higher. The batteries on a diesel truck are wired to the truck differently than in a standard automobile. Not much is going to stop that rig.
The normal compression in a diesel engine is a tad more than 171 and the normal compression in a gasoline powered engine is closer to 91.
Granted an old idi there was a lot more room to work with under the hood. How do you trickle charge a diesel truck with two batteries. This has its advantages it provides a totally independent means of charging the start battery as well. Pop the hood and locate the batteries.
