Battery Charging on two batteries
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Senior User
Joined: Nov 2003
Posts: 118
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Battery Charging on two batteries
All,
I am new to the concept of having two batteries in a pickup (97 F350) and am not sure how to hook up a battery maintainer type battery charger for times when the truck sits for a while. I've searched he archives and read my Diesel Supplement but have not found anything saying how to do so.
Do I hook one lead to the positive on one battery and the other lead to the negative on the other battery so they both get charged and maintained at the same rate?
Thanks in advance,
BWSwede
I am new to the concept of having two batteries in a pickup (97 F350) and am not sure how to hook up a battery maintainer type battery charger for times when the truck sits for a while. I've searched he archives and read my Diesel Supplement but have not found anything saying how to do so.
Do I hook one lead to the positive on one battery and the other lead to the negative on the other battery so they both get charged and maintained at the same rate?
Thanks in advance,
BWSwede
Postmaster
Joined: Jun 2007
Posts: 2,795
Likes: 1
From: Rogue River, OR
Blanes, I'm not real sure but I think that you can hook the Pos to one battery and the Neg to the other and trickle them in series, 12 volts is 12 volts.
Even if you just hooked up to just one battery the other is going to get the benifit of the charge.
jmho,
Rog
Even if you just hooked up to just one battery the other is going to get the benifit of the charge.
jmho,
Rog
Fleet Mechanic
Joined: Aug 2007
Posts: 1,508
Likes: 2
From: The boonies by Dallas OR
Just hook it to one battery and call it good. The batteries are in parallel, and they'll both charge. That's what the on board system does.
I use a cigarette lighter end on my maintainer, and just run the power cord out the door.
I use a cigarette lighter end on my maintainer, and just run the power cord out the door.
Fleet Mechanic
Joined: Feb 2004
Posts: 1,816
Likes: 3
From: River Valley AR
Red to either positive, black to either negative. Electrically they act like one big 12 volt battery
Your batteries are wired in parallel on these trucks. Everything on your truck is 12 volts.
Do a Google search and look for Series battery connections and Parallel Battery connections. You have Parallel.
You should NEVER hook a negative to a positive on this truck, that only happens on 24 Volt systems, yours is not 24 volts.
Your batteries are wired in parallel on these trucks. Everything on your truck is 12 volts.
Do a Google search and look for Series battery connections and Parallel Battery connections. You have Parallel.
You should NEVER hook a negative to a positive on this truck, that only happens on 24 Volt systems, yours is not 24 volts.
Senior User
Joined: Nov 2007
Posts: 220
Likes: 0
From: taunton , ma
got to sears they sell a small batt. maintainer for like $30 bucks you wire it to the batt and never have to take it off it mounts under the hood and is fully automatic. just plug it in and it turns on and shuts off on its own I wire mine to the same wire as my block heater so when you plug it in it charges and heats the block
Postmaster
Joined: Jun 2007
Posts: 2,795
Likes: 1
From: Rogue River, OR
Originally Posted by kawa
Blanes, I'm not real sure but I think that you can hook the Pos to one battery and the Neg to the other and trickle them in series, 12 volts is 12 volts.
Even if you just hooked up to just one battery the other is going to get the benifit of the charge.
jmho,
Rog
Even if you just hooked up to just one battery the other is going to get the benifit of the charge.
jmho,
Rog
