Battery on trailer
FTE Community Team
Joined: Mar 2017
Posts: 3,339
Likes: 1,052
From: Florida
bingo
i use a set of diodes to prevent a HOT line on the 7 pin pig tail once its unplugged from the truck.
if trailer is plugged into truck and truck is OFF the power is removed from the 12v pin in the connection and will not back feed to trucks system, at least thats how its showed to be wired in the electrical book.
i use a set of diodes to prevent a HOT line on the 7 pin pig tail once its unplugged from the truck.
if trailer is plugged into truck and truck is OFF the power is removed from the 12v pin in the connection and will not back feed to trucks system, at least thats how its showed to be wired in the electrical book.
Cargo Master
Joined: Apr 2018
Posts: 2,399
Likes: 1,119
My gooseneck trailers have a large group 65 size battery to run lights, hydraulic jacks. They have only ever been charged by the truck.
Can you install a larger battery to aid in buffing the draw/recharge time?
My fuel trailers has two deep cycle batteries, they are charged also from the truck. Solar when not hooked up.
Can you install a larger battery to aid in buffing the draw/recharge time?
My fuel trailers has two deep cycle batteries, they are charged also from the truck. Solar when not hooked up.
Fleet Mechanic
Joined: Aug 2022
Posts: 1,582
Likes: 1,117
It all depends on drive time and how much power is being consumed daily but generally, you'll get VERY little charge from a truck unless you add a DC to DC charger. https://askthervengineer.com/youre-n...r-tow-vehicle/
Also, I'd echo JohnD333's comment that the 12V output leads on a Honda Generator are very poor for charging batteries; you'll do MUCH better plugging an actual battery charger into the genny.......may be all you need.
Dave
Also, I'd echo JohnD333's comment that the 12V output leads on a Honda Generator are very poor for charging batteries; you'll do MUCH better plugging an actual battery charger into the genny.......may be all you need.
Dave
Lead Driver
Joined: Aug 2022
Posts: 5,057
Likes: 1,413
From: Oologah, OK
It all depends on drive time and how much power is being consumed daily but generally, you'll get VERY little charge from a truck unless you add a DC to DC charger. https://askthervengineer.com/youre-n...r-tow-vehicle/
Also, I'd echo JohnD333's comment that the 12V output leads on a Honda Generator are very poor for charging batteries; you'll do MUCH better plugging an actual battery charger into the genny.......may be all you need.
Dave
Also, I'd echo JohnD333's comment that the 12V output leads on a Honda Generator are very poor for charging batteries; you'll do MUCH better plugging an actual battery charger into the genny.......may be all you need.
Dave
is that lead acid batteries, ( and most others )
must be pushed to 14.5 volts for an extended amount of time, for the battery to actually receive a "Full Charge" and show 12.7 volts at idle for several hours after the key is OFF.
12.6 volts is marginally at Full Charge.
12.5 is on the way down.
12.1 is almost dead for practicable purposes.
if the engine is in good condition, it might start, but that battery will need many hours at 14.5 volts to recover to Full Charge.
My Alternator regulates at ~15 volts
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