Best battery

Best battery

Postby Rinny [OP] » May 2nd 2020, 11:53am

Thinking about going with an optima Red Top 800cca 34/78 Battery. Any thoughts?
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Re: Best battery

Postby chevymaherchevymaher is online! » May 2nd 2020, 12:11pm

Project farm on you tube tested batteries. The wal mart specials are made by some big name brand in a brown wrapper for them. They outperformed the rest even the Optimas.
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Re: Best battery

Postby Rinny [OP] » May 2nd 2020, 12:14pm

I am scared to buy a battery from Walmart, lol. do you have a link to that you tube vid?
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Re: Best battery

Postby zzimmer3 » May 2nd 2020, 12:44pm

I've purchased all my batteries from the Walmart with great success and a decent deal. I'm sure optima batteries are better and it'd be cool to try one, but money is to much a factor for me.
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Re: Best battery

Postby chevymaherchevymaher is online! » May 2nd 2020, 12:51pm

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Re: Best battery

Postby Rinny [OP] » May 2nd 2020, 12:58pm

I am mostly concerned about running my m12 warn winch and from my research the optima red top has the best reviews. Add the elect fan for the engine the elect fan for the tranny cooler the ac front and rear, there is an issue with the encoder motor on my NP236 in AWD also. If that motor is starved for power it will burn up pretty quickly when you are in slippery conditions. That is a lot of equipment depending on a good power supply. I don't like wasting $$ but pennywise and dollar foolish comes into play. been thru 2 encoder motors and a winch motor in the last year. Fortunately the winch motor was under warranty. The encoder motors were not and they are not cheap, not too bad to change though.
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Re: Best battery

Postby Rinny [OP] » May 2nd 2020, 1:00pm

chevymaher wrote:

Just watched it. Most all the recommendations for running a winch point to the red top.
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Re: Best battery

Postby Mmusicman » May 2nd 2020, 3:03pm

Rinny wrote:..been thru 2 encoder motors and a winch motor in the last year...

2 encoder motors on an NP236? Why do you suppose this happened?
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Re: Best battery

Postby Mmusicman » May 2nd 2020, 3:34pm

zzimmer3 wrote:I've purchased all my batteries from the Walmart with great success and a decent deal...

I bought one from Walmart for my motorcycle and it has outperformed and outlived my previous "big name top of the line" battery by double. I'm sold.

I run Sam's Club Duracell Automotive batteries in all my vehicles with great success.
But this is just a standard application battery... good power, good life, and good value.

20170511_174356a-Duracell.jpg

Can you buy better for more money? Most likely.
But I also avoid "gimmick" batteries.

Personally, I believe battery technology and manufacturing has improved overall.
Like motor oil... the products meet much better standards today.
I remember when Quaker State and Interstate were all the rage.. lol.

There are only a couple manufacturers making them for everyone.

Everyone has their "success" stories.. as well as poor luck and "failure" stories.
But sometimes your luck is not the same as others.

Personally, if I were looking to increase capacity (beyond stock)... I'd probably just add another BIG battery somewhere in addition to my starting battery. There are all kinds of cool options. :D
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Re: Best battery

Postby Leeann_93 » May 2nd 2020, 3:59pm

I've had good luck recently with the NAPA Legend Premium batteries. They have a Premium AGM, but I haven't gone there yet.

We had an Optima red top battery for the RVs generator. It lasted a decently long time, but the recent reviews on the Jeep KJ forum suggest they're not what they used to be. I might get the Premium AGM for it and see how that works.
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Re: Best battery

Postby 97cargocrawler » May 3rd 2020, 12:00pm

I have really wailed on my Yellowtop Optimas and they still going. I have melted off terminals, actually made one get so hot it leaked A LOT of fluid out the vent, drained them down to 2V and they recovered just fine. I have 5 that have all been majorly F'd in some fashion and they all still hold 13.5v no problem. Expensive af though. Amazon has a great return policy....it's bad? Keep it. We'll send out a free replacement. That's how I got 5. :shhh:
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Re: Best battery

Postby Mmusicman » May 3rd 2020, 12:17pm

97cargocrawler wrote:Amazon has a great return policy....it's bad?
Keep it. We'll send out a free replacement. That's how I got 5. :shhh:

You got 5 bad Optima batteries? :o
(yes I read the rest of your post..lol)
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Re: Best battery

Postby Rinny [OP] » May 3rd 2020, 1:35pm

MM My theory on why the encoder motors went is to do with the eagle high alternator. It was supposed to be a 250 amp alt but reflecting back I noticed that the amp meter at times was reading low and other times charging like a bandit. Sometimes in the morning the van dragged when starting but not enough to really pay attention besides "that doesny sound rite". Tested the alt the other day and it was not charging anywhere near where it was supposed to be. In AWD that encoder motor needs a good supply of current and I the bat was down and the alt was not putting out what it was supposed to with the elect fan running it fried the encoder motor. Completely seized upon changing. That is what I am thinking. I just ordered a 280 amp alt. I have a MecMan 8206250 coming and that is why the discussion on the battery. I will put the proper wiring in it also for the ALT. I am also running a M12 Warm Winch which can draw as much as 400 amps. You are much more technical than I with a much bigger skill set so I do appreciate your input. Thanks
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Re: Best battery

Postby Rinny [OP] » May 3rd 2020, 1:38pm

CC you also have a great skill set and were a big part of several things on my build. Your skill set is completely unbelievable. They say the red tops are better for winching than the yellow tops somethin about the charging capabilities?
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Re: Best battery

Postby Mmusicman » May 3rd 2020, 2:09pm

Rinny wrote:..It was supposed to be a 250 amp alt but reflecting back I noticed that the amp meter at times was reading low and other times charging like a bandit..

This sounds completely normal.

Rinny... it is a mis-conception that an alternators put out "constant amperage". They do however produce "constant voltage" (maintained by internal regulator)... and supply it "up to" whatever amperage is required. Amperage is based on load. Loads vary constantly (while voltage remains constant)... but the current goes ONLY to whichever device is drawing it.

It is also the job of the alternator to maintain battery voltage.

If your battery is fully charged and there are no heavy loads, the alternator will produce steady voltage, but at almost no amperage, since there is little draw. Current is only supplied when there is a load demand.

A 400 amp alternator will only produce (let's say) 200 amps if that is all that is drawn from it. If there is little or no draw.. it will produce almost zero amperage. There is little point of having an alternator that produces excessively more than you'll ever need.

Encoder motors may draw a couple amps... but very minimal (compared to heavier draw devices). If supply voltage drops.. then there might possibly be issues. But the encoders receive PWM (pulse-width modulated) signal.. so none of this may even be relevent.
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Re: Best battery

Postby Rinny [OP] » May 3rd 2020, 2:15pm

So the fluctuation in the High Eagle alt could have been the problem especially if it was intermittent and not noticed?
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Re: Best battery

Postby Mmusicman » May 3rd 2020, 2:26pm

Rinny wrote:So the fluctuation in the High Eagle alt could have been the problem especially if it was intermittent and not noticed?

Not likely the cause of the encoder motor failure.
(unless there were serious spikes or excessive voltage swings)
But even then I would doubt it.. since the battery should absorb and smooth out most of it)

----------------------------------------

If the alternator's output is internally intermittent, that would be an alternator issue.

But if any single connection along the path is intermittent, then it would still appear as an intermittent charging issue, but would NOT be the fault of the alternator. You have to diagnose where the problem is.

The alternator will only produce current if it is DRAWN from it.
Heavy current draw depends on strong solid connections.

Best way to find weak points is to check for voltage drops... from one point to another.
Sidenote: you'll also find excessive heat where there is a voltage drop too.
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Re: Best battery

Postby Rinny [OP] » May 3rd 2020, 3:29pm

what do you use and how do you check alt output rite at the alternator?
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Re: Best battery

Postby Rod's Trucks » May 3rd 2020, 5:14pm

Rinny,
The simplest way to check output right at the alternator, is with an inductive (Clamp-on) style meter.
They are relatively expensive as meters go, and many versions will not measure DC current (Amps).
Years ago, auto parts stores sold a small hand-held inductive ammeter that had a groove in the back side of the plastic housing. That groove was to be snugly held over a cable, and it would give you a fairly decent reading of the current in the cable. I have not seen one of those in a long time, but they might be available.
I just looked at e-bay, and see a newer, but similar one, for sale.

https://www.ebay.com/itm/ACTRON-NAPA-70 ... 8027!US!-1

This version, from Amazon, does the DC current measurements, and is one of the cheapest meters I have seen that does measure the DC current. It should suffice for all your electrical test needs.
https://www.amazon.com/Meterk-Multimete ... 269&sr=8-2

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Re: Best battery

Postby Rinny [OP] » May 3rd 2020, 9:26pm

I have a multi meter and I think it does dc. Positive to alt output stud and neg to battery?
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Posts: 1339
Topics: 56
Images: 6
Joined: December 2015
Alias (AKA): 5.7L, NP236, 3"Lift
Van Model Year: 2003
Van Make/Model: Chevrolet Astro
Extra Info: 5.7L NP236

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It is currently November 28th 2020, 12:22pm

Electrical Forum
ElectricalDiscussion specific to electric components of vans. Category for alternators or batteries, starters and ignition parts, anything 12v and electrical issue like fuses, circuitry, wire, terminals, switches, connectors, bulbs, relays, and wiring. Voltage and amperage diagnosis.
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