"Enhanced" flooded starting batteries for stop start auto

[landyacht318]

Many modern Autos intentionally keep the battery discharged to the point that when the driver lets off the gas, or hits the brakes, the battery can then accept higher amps when the voltage regulator commands 14.5+ volts. This acts as a poor regenerative braking MPG enhancer and a battery that basically is Never fully charged

This results in the continuous partial state of charge cycling of starter batteries, and short lifespans and not long after, whining customers demanding new batteries under warranty which then eats into profits.

Looks like the marketing departments saw something to peck at and perhaps there is some engineering following suit to keep the beancounters from screaming too loud.

Looks like the carbon additive to the plate paste in some modern deep cycle batteries is working its way into the Automotive starting battery world.

For those who do not want to click the below links:

Increased dynamic charge current acceptance over standard wet-flooded batteries (+170%), due to improved design including special Carbon additives and high charge acceptance envelope type separators
Increased cyclic durability over standard wet-flooded batteries (+100%)
Sealed tip/tilt double lid with integrated flame arrestor

Exide invented the first EFB battery in 2008, helping European car manufacturers to reduce fuel consumption and emissions for small to mid-sized cars. Our technology is now considered the most advanced in the industry. The latest-generation EFB battery offers significantly improved charge acceptance and cycle life, a result of key breakthroughs in lead alloys and unique carbon additives that came from our R&D efforts. Exide’s Start-Stop EFB batteries enable Start-Stop, regenerative braking and other powerful fuel-saving features.

https://www.yuasa.co.uk/info/technical/agm-efb-explained/#efb

http://www2.exide.com/gb/en/product-solutions/transportation/product/exide-start-stop-efb.aspx

If this leads to batteries that are more resistant to hardened capacity destroying sulfation from chronic undercharging, the bane of all lead acid batteries, well mo bettah for us intetionally deep cycling the lead acid beasts and have systems designed for charging this medium.

Argue away.......

[MEXICOWANDERER]

Pulse Charging

Strontium Plate Alloy Additive

Battery Eye

Par for the course

Meticulously create a problem where the never was one -- then BS your way through a miracle answer. Much like losing your brakes in the old days...pedal hits the floorboard and you'd swear it made the car go even faster...

Wotta hoot. I have a nine ton bus and an alternator that consumes almost 22 horsepower when angry. The effect of 22 horsepower is not felt at all. Take an EIGHTY AMPERE alternator and connect it to an 8 horsepower Honda 4-stroke gasoline engine. Start engine, advance throttle to 3400 RPM, Enable voltage regulator, motor loads a little but maintains speed at full eighty amps output.

This is supposed to be magic? It is mouse milk. Cruel deception. An air intake VORNADO that swirls air into a nuclear powered vortex as it enters the carburetor. Step on the starter after adding VX6 battery additive and the starter will rip its way through the hood and disappear leaving a comet trail of surplus ions in it's wake.

But this is the age of Con-Artistry. Politically Correct Unicorn Food. Declare it GREEN and then watch the mob see green, swallow brown, and beg for more

Yeah Delco had it right in the 1980's. Manufacture a 15 volt auto voltage regulator to do along with it's proprietary calcium/calcium Delcotron battery then expect consumers to pay 37% more for a DELCO battery. Oops! Blow the snot out of a replacement battery with 15 volts? "Well we told you the Decotron was special".

Clancy made have had it right, with that disaffected Japanese airliner pilot novel.

[landyacht318]

My Old man has a daily driven 2018 Cadillac ATS with start/stop. It has a single AGM in the trunk, a group 94 AC Delco AGM rated at 80AH and 800 CCA.

When I recently put my 40 amp capable Meanwell rsp-500-15 on it when set at 14.7v, it took 40 amps for about 20 seconds before tapering to about 5 amps within 5 minutes. So nowhere near fully charged.

I'd estimate it would have required 2 more hours for amps to taper below 0.4a @14.7v, but My dad was going somewhere and I removed the Meanwell before it got there. I also could not get the trunk light to turn off, I saw no trigger switch anywhere, and estimated that was 0.6 amps worth of load in the figures above.

I expected it to take 40 amps for a bit longer than it did, but if it sucked up 40 amps for 20 seconds, well one does not really brake for longer than that, and some websites say that every 25 amps the alternator makes, sucks up one engine HP so say the VR asks for 14.8 when braking, and the engine is only then asked to make 50 amps just for the battery.

I wonder just how long the battery will last in such usage, hovering in the 90% charged range, with little chance of a deep cycle.

[time2roll]

Just shows how the auto manufacturers are up against a wall to improve economy.

[STBRetired]

My Edge has start-stop and came with an AGM battery. Don't think there was anything else unusual about the battery.

[ScottG]

I thought vehicles that had start-stop capability always used a battery other than their standard starting battery - no?

[Lwiddis]

“and short lifespans and not long after, whining customers demanding new batteries under warranty which then eats into profits.”

My TV battery lasts as long or longer than the “old” days. I see no mass battery issues with others. Therefore, I disagree.