Onan GenSet: 16V to Batteries
#1
Onan GenSet: 16V to Batteries
I have a 7.5KW Onan liquid-cooled diesel generator in my service truck. When it's running, there's anything from 14-16V coming off my truck's batteries. The less load the higher the voltage. Is this going to damage anything? If so I'm probably just going to disconnect the alternator. I don't want to ruin 4 6 month old batteries.
#2
It would be borderline. Why do you have it connected to the truck in the first place? If it is for starting, I would isolate a battery just for that purpose and not have it conjoined to the truck.
#3
While vehicle batteries are commonly called 12 volt, the system and charging voltages are higher.
#4
Thanks for your replies, sorry I'm taking so long to respond.
I have it connected to the truck so I wouldn't have to buy 2 more batteries, and lose more compartment space. It was really easy to run another 2/0 from the battery isolator switch to the generator.
But 16V? Ive never seen a battery charger get above 14.5-15V.
It would be borderline. Why do you have it connected to the truck in the first place? If it is for starting, I would isolate a battery just for that purpose and not have it conjoined to the truck.
While vehicle batteries are commonly called 12 volt, the system and charging voltages are higher.
#7
If it's only a single heavy wire or a single heavy wire and one smaller wire it could be an internally regulated alternator.
Do you have a model number for that unit ?
Do you have a model number for that unit ?
#9
There is currently a video on you tube of that genny from another fire department.
Shows a regulator for 12vdc. part # 185-2252.
Some good manuals....
onan 7.5 dkdfj parts manual_pdf
Shows a regulator for 12vdc. part # 185-2252.
Some good manuals....
onan 7.5 dkdfj parts manual_pdf
#10
There is currently a video on you tube of that genny from another fire department.
Shows a regulator for 12vdc. part # 185-2252.
Attachment 75203
Shows a regulator for 12vdc. part # 185-2252.
Attachment 75203