alternator output

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Mar 13, 2018 | 07:00 PM

doubledip

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alternator output

Is there a graph somewhere here that shows alternator output vs engine rpms? 2014 6.2 How fast does my engine have to be spinning to get a good charge? TY

Mar 13, 2018 | 07:13 PM

Chuck's First Ford

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From: very South Texas

a low battery should be recharge by a good battery charger.. not your alternator..

my opinion.

fyi.. alternator output is graphed using a set resistance... not to charge a battery..
as depending on level of discharge.. internal resistance will be different in every battery.

my 6.2L has a 157 amp alternator... max output is around 3,000 rpm's

Mar 13, 2018 | 07:24 PM

doubledip

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THANK YOU

My truck sits a lot ,so when i do drive it i drop the trans down a gear or 2 to get higher rpm does that make any sense to do that?

Mar 13, 2018 | 08:21 PM

Colorado350

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From: Colorado Springs

Quote:

Originally Posted by doubledip

My truck sits a lot ,so when i do drive it i drop the trans down a gear or 2 to get higher rpm does that make any sense to do that?

Install a battery tender and run the plug down to the bumper, then just plug it in when you're going to let the truck sit.

Battery Tender 800 is a SuperSmart Battery Charger that will Constantly Monitor, Charge, and Maintain your Battery. It's Encapsulated and Protected from Moisture by an Electrical Insulation

Amazon

Mar 13, 2018 | 09:05 PM

Tedster9

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From: Waterloo, Iowa

Quote:

Originally Posted by doubledip

My truck sits a lot ,so when i do drive it i drop the trans down a gear or 2 to get higher rpm does that make any sense to do that?

Yes in theory, but it's going to take a while regardless. Longer as in hours. This wastes fuel. It is also hard on the alternator.

An external battery charger is efficient and inexpensive way to keep battery where it should be.

Mar 14, 2018 | 05:18 AM

Chuck's First Ford

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From: very South Texas

a smart battery charger.. or disconnect a battery cable..

I am a fan of the battery tender brand.. I own 3 of them..
Motorcycle
Lawn tractor
electric start gas generator..

24/7/365...... all 3 of them.

you are burning many dollars of fuel.. when a battery charger uses a few cents a day of electricity .

besides.. pulling a starting battery below 50 percent shortens the life of the battery...
my 2004 Dodge truck. the battery lasted 12 years.
my current Ford F 250. battery lasted 8/2011 to 10/2017.. and 152,000 miles...