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Van battery question
#21
Glad Ford replaced your battery under warranty.

While a new battery should be delivered to Ford fully charged, it was not. 
   While Ford should put their stock of replacement batteries on a charger regularly, they do not.
      While the vehicle's charging system should be able to take the battery back to full charge, it will not.

The lesson is, put the battery, new or old,  on a charger regularly, if one does not want to deal with having to warranty a starting battery.

If one just assumes the vehicle will perfectly recharge it quickly, or come anywhere close to what the battery wants to live a good long healthy life, they are  overwhelmingly deluded, and living in the past when integrity and honor once had value.

3 weeks of a modern vehicle sitting undriven, the paraistic loads of engine comuter, body control computer, door locks ect, is enough to drain a battery below 50% charged.  Starting batteries hate being discharged this low.

As far as a battery with a longer warranty being a better  built battery, or the extra money is simply going towards the longer warranty, it is impossible to say for sure without comparing the two batteries, not just their exterior casing, but their weight and performance.  If they have different specs, such as weight and CCA, and reserve capacity or Ah if it is so rated, then one is perhaps  buying a better built battery, but they could simply fudge the specs too.

If the only difference appears to be the price and warranty and sticker color, gold vs platinum or whatever, then one is likely buying the same battery but with a different more or less expensive warranty.
As far a a battery with higher CCA rating being better than the same size battery with lesser CCA, the lesser CCA battery is likely to have slightly thicker, less porous( and fragile) plates.  It might weigh more too, which is a good thing with lead acid batteries, heavier is better.  Higher CCA ratings does not mean a better battery, and only near the end of the batteries life in a cold blast would actual higher CCA ratings be of any benefit to the purchaser.

As far a parasitic drains killing your battery, one solution is to pull the negative cable off when storing it, or using a cut off switch so no tools are required.  On Some vehicles, the computer does not simply quickly relearn the engine, and  should not have this done.  The owners manual will have a procedure for when battery replacement is required so as to save the settings and no 'reflashing' the ECM is required.  Usually it is to parallel a battery in place while the main battery is replaced.

If I disconnect my battery and reset the computer, it runs crusty as it warms up initially, and then through the next cold restart, and this is a 1989 van.  The MPGs and power also suffer until the second cold start and warmup. 

Other solutions to parasitic drains are of course find what is causing the parasitic draw and neutering it, by pulling its fuse or some other method. If  the draw lies  inside the Body control module, or some other computer driven bell or whistle, good luck.  A Nerd on a ford transit specialist forum would be the best place for info.

Modern new cars have all sorts of bells and whistles,  and all of these noisemakers do put a harder load on the battery, and the vehicle's charging system is also not shiving one git about the battery health and returning it to full charge. 
Your complaints of MPG'S being well below rated could indicate that Ford has also employed the modern strategy of sacrificing battery life for tiny gains in MPG's, but you would have to monitor a voltmeter going down the road to see what the charging system is doing. 
Such vehicles usually take 99% of the load off the charging system when they are most likely to be racking up miles using the least fuel, such as straight line highway driving, and then tell the alternator to make more juice when braking or slowing down when mpgs take a dump anyway.  Each 25 amps the alternator makes sucks up one engine horsepower, so keeping the battery at low enough state of charge so it can accept 25+ amps  when voltage regulator demands mid to high 14's, is a very poor 'regenerative braking' method, but if applied across a manufacturer's entire fleet of vehicles, can raise their combined mileage and save them many millions in C.A.F.E. fines/ penalties. 

The CAFE requirements are also driving the thinner oil recommendations in North America. The same exact engines in Australia or Asia or Europe, do not recommend the super lightweight 0w-20 oils.  The super thin oils might not cause engine failure within the vehicles lifespan anyway, but those buying new and intending to rack up 300k plus miles would likely be better off with a 5w-30 instead of 5w-20, especially if driving the vehicle hard.

Vehicle Manufacturers today  basically gamble the battery will last the warranty period. When too many batteries fail within warranty, cutting into profits, only then would the voltage regulation of the vehicles charging system( on future models) be updated, and only if it is not eating into profits to do so. 
Vehicles still under warranty, it is the dealer's job to deny anything is wrong ever, and send you off , while hoping and praying total failure occurs out of warranty.

Maximum profit and all.

In  Vandwelling usage, a failing engine starting battery is a good time to inspect and measure the battery tray, to see if a larger footprint and taller marine/dual purpose battery can be shoehorned into the battery tray. More capacity also means that parasitic draws will take much longer to drain the battery to 'it wont start' levels, and the same durations of parasitic loads drain the battery to a higher level than on a lower capacity battery.  A marine battery will have a lower CCA rating than a starting battery, but if the battery is bigger it will still likely exceed the minimum CCA rating the manufacturer calls for.

While secondary/house/leisure/Auxiliary battery systems give a lot more warm and fuzzy capacity, a secondary battery has many considerations and expenses involved.  After once carrying a total of 345Ah of battery capacity, I now personally use just one high quality dual purpose 90Ah  AGM battery for house loads and engine starting, and always have a fully charged jumper pack battery, should I drain it too low.
  Which has not occurred, yet, but should soon as the battery is 6 years old and its voltage during engine cranking is falling into the low 9's.
[-] The following 3 users say Thank You to sternwake for this post:
  • Snikwahjm (11-20-2019), TWIH (11-23-2019), GypsyDogs (11-24-2019)
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#22
As usual, sound info. I have followed the same advice of periodically charging my starter battery overnight and I think thats what prolonged its lifespan. Also the new WM starter battery I put in came partially charged, maybe 75% if you can believe my craptastic HF Centex 10/2 charger dial. I did leave it on appx 15 hours, the first 3 hrs on 10 amp then dropped it down to the 2 amp setting for appx 12 more. By then the needle was all the way over and if accurate, it wasn't accepting much at all. I didn't ever check terminal voltage that following day, but it spins the v6 over easily even when it is in the 20’s.

I’d like to rig up a through the ciggie plug little 10 watt solar panel on the dash, I’d think that minimal current would be ok even without a charge regulator. As long as it would “backfeed” the starting battery but Im not sure as that outlet goes dead after about 10 minutes, so perhaps it won’t feed the battery?
"Life is short, smile while you still have teeth."
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#23
Find a different way to hook in the solar.
Sounds like the computer is controlling the stock cig plug .
Maybe a fused(at batt) wire direct to the batt circuit ?
stay tuned 
  Cool
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#24
The computer shutting down the ciggy plug after 10 minutes also points to the additional parasitic loads on modern vehicle batteries.

My 100 watt panel ontop of my windshield made 87 watts. behind the windshield made only 43. Same angle, no shadows. Double the wattage you believe you need and make sure no windhsiled wipers cross the panel as the sun traverses the southern sky.

a 10awg wire running right to battery fused at battery is a great idea. have a the ubiquitous ciggy plug and a better connector there too, like an anderson powerpole which can handle more than a few amps without heating excessively
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#25
Set the panel on the windshield wiper and connect directly to battery.  This is what I do for the van now that it has been sitting.  I also got a really cheap 3 amp pwm controller with the panel and put it under the hood but not fastened.  Put a drip loop on the panel wire so water doesn't follow the wire to the controller.

Panel and controller
Brian

2000 Roadtrek 200 Versatile "The Beast" (it has been tamed hopefully)  I feed it and it doesn't bite me.   Angel
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#26
Ok Ill try the direct to battery connection. Should be able to go through the firewall with the tiny probably 14-16 gauge wires. I have read a few places that its ok to put a 10 watt panel (uncontrolled) onto a 100 amp hour battery, so a dash mounted 10 watt panel should be ok given the 40% power factor due to the windshield (don't know what the amp hr rating of the new battery is but likely in the 50’s).
"Life is short, smile while you still have teeth."
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#27
Oh another question. Since the cheap HF charger has an unknown algorithm and voltage set points (Ive never been able to find any info on basic big box chargers as far as their voltages at differing stages) would it be reasonable to assume that a charger set on 2 amp for 48+ hours would be running around 13.6-13.8, and eventually that would top off the battery to as close as a 100% SOC that a sealed up battery can be determined to be?

A very loosely based question I know.  I have checked the initial battery voltage when the unit is just started and it is at 14.6x on the terminals.  It fluctuates (cycles) according to the craptastic free red HF meter... so who really knows.
"Life is short, smile while you still have teeth."
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#28
Find out if there is a fuse for the interior lighting. Pull it.

These are smart cars now. Pesky humans causing the issues.
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#29
(11-23-2019, 05:06 PM)TWIH Wrote: ......................  I have read a few places that its ok to put a 10 watt panel (uncontrolled) onto a 100 amp hour battery, so a dash mounted 10 watt panel should be ok given the 40% power factor due to the windshield (don't know what the amp hr rating of the new battery is but likely in the 50’s).
 The amount of amperage/wattage required to bring a battery to too high a voltage, depends on teh battery. it is not always safe.
Here is a Mainesail video showing how a 12 watt unregulated panel can overvoltage  220Ah of AGM.



A new small healthy battery should be able to achieve full charge at 13.8v given enough time.An unhealthy battery will likely not be able to achieve full charge at 13.8 and higher voltages are likely required.
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#30
Ok all, thanks. Guess its a better idea to use the cheap China pwm controller.
SW appreciate the reminder that a (sulphated) battery wont repair itself at such float voltages.

Best to all,
TWIH
"Life is short, smile while you still have teeth."
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