I am aware of one other company using pure Lead, Odyssey. It is harder to access these batteries if the automakers try to use batteries that require less maintenance and less change. The agm batteries typically cost at least twice as much, but they dont last twice as long, not in my experience, anyways, Tip . Agreed - plug-n-play. As far as I can determine the Forester takes a Group 35 battery. So you have the optimal use of the battery and also protect the environment. Would also comment that if these batteries should ever be run down (ie: dead), they require a different type of charger to get them charged. You guys must live in the south. But if were talking Hey, did you know that -40 is the same temperature in both C and F? then you probably need a more robust battery, just for those super-cold days. The guys commented the battery is no good. I dont care about testing a battery for anything . We can generally say an AGM battery can last two to three times as long as a flooded battery. So I am not actually surprised to see voltage down. (Microsoft SQL Server), Guy-Charles Cros quoted by Osamu Dazai: "comme un crapaud contourne une pierre", Simulate bitmap mode in photoshop for e-ink photo preparation. You can get 640CCA in this group. I dont know if Hyundai has that option. Heres the reading I got when I tested my own battery with a conductance tester. It should be in the 13/14v range when the car is running, but when the car is off anything above 12.6-ish is good, voltagewise. @Paulster2 The problem with charging Optima is not that the battery is AGM, it is that they use pure Lead plates. If 12.7V is a standard voltage, why did AutoZones meter recommended Replace the battery? Some also get the "Deep Sleep" message in the FordPass app that indicates a low battery voltage for the 12v battery. Does a SQL Server Update statement for nvarchar overwrite the same address on disk if the new value is the same size? Can I cut the steerer tube with a pipe cutter? @shadowfax, cold is NYC cold. The GPL-4CT is a deep-cycle AGM battery offering 220 amp-hours (AH) at 20HR rate, so with four of them wired in series/parallel a 440AH capacity is achieved with all the advantages of an AGM battery. OEM size is adequate. Remember that the guy behind the counter might well have been hired last week, with no prior automotive experience, and still hasnt learned everything he should know in order to give good advice. Newer vehicles have a Battery Sensor Module or similar systems. You can get 640CCA in this group. Read the multimeter display. My 99 Jeep Cherokee XJ and 97 Buick Park Ave are older cars that orignally came with flooded batteries. Many newer battery chargers have an AGM setting on them, so should not be an issue. Heres a battery for your Subaru that delivers 550 CCAs. I think a jump start cost me around $50 on a Sunday morning so something to be avoided. Adding a larger AGM battery helps to prevent these issues. With no sensor, the flooded battery could be possible. An AGM battery is a car battery designed for two jobs: delivering powerful bursts of starting amps and running electronics for a long time. It only takes a minute to sign up. The AGM battery, hence in most scenarios, should be recovered this way. More than voltage needs to be tested to determine condition of battery. I didn't say it was a problem to charge them, it's that when you try to improperly charge them you have issues. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. True and False. Is Iran considered a democracy by the Western world? Alternator Upgrade: Sizing cable to battery. If their test equipment is faulty then they would have a lot unnecessary warranty claims. . On certain cars when replacing a battery and registering the battery to the car, its required to select AGM or lead-acid and the age of the battery so the car knows how to properly charge the battery. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. why did AutoZones meter recommended Replace the battery? Charging a 26AH Lithium battery with an idle 140 minute reserve AGM battery? 600 plus CCA are really pretty standard, at least in a Delco battery. Jumpstart around here is $65 and I am in no mood to pay that. No to AGM, unless you subject your vehicle to severe off-roading. Many modern chargers allow you to select whether youre charging an AGM battery or a flooded cell option. Check and see if the AGM battery has reached 10.5 volts of charge. Should I replace the battery? I could get a new battery from Costco (Have a Kirkland in another vehicle) and replace this one, no problems, but I would like to know how one would definitely figure out if the battery is really bad. There often is a warning in the vehicle manual to only replace the original equipment AGM battery with another AGM. Justin Godber: We hand build all of our AGM batteries from start to finish. AGM batteries are also ideally-suited for these applications, because many of them have provisions for external venting, in the unlikely event the battery is somehow overcharged and does need to vent excess pressure. They are often sold half charged! And heres the big deal: They tend to last longer than a regular flooded battery. AZ testing kind of reminds me of every battery must be replaced like AAMCO. I dont have jumper cables or a starter pack and I really dont want to buy either of that. Is it always safe to replace standard batteries with AGM variants? From what I could see on the tiny screen on the gadget, t just showed the voltage, not CCA and Replace battery. It rang up 12.7V. Any idea? When the AGM battery dies, you can replace it with another AGM or go back to a normal battery. Replacement AGM battery for 2007 Ford Fusion, Motorcycle LiFePo4 replacement battery vs Gel vs AGM. To learn more, see our tips on writing great answers. You are correct that they have a lower internal resistance and can be charged at a much faster rate. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Are Asian-Americans considered an "underrepresented minority" in academia in the US? The following paragraph from this site helped me draw this conclusion: https://www.knowyourparts.com/technical-resources/blog/three-misconceptions-agm-batteries/, "While the installation of the battery may be the same for the two battery styles, some vehicles require an extra step to tell the vehicle that the battery has been replaced. Explain, not doubting just don't know. @Paulster2 Why if dead? Why Korean transcriptions of Japanese words uses the letters ,, for initial /k/, /t/, /t/ while using ,, for other languages? Edit - The 12 volt battery is under the floor in the rear cargo area. Theyre just extremely expensive! When you are using lets say a 10-amp charger, then the battery should take close to 2 hours to reach the voltage required. Start by telling us how cold cold is, and then tell us what exactly happened when your wife had trouble starting it. SLA stands for Sealed Lead Acid.VRLA stands for Valve-Regulated Lead-Acid.Unlike the traditional wet batteries, AGM batteries only hold a small amount of acid, which is entirely absorbed by AGM batteries made with ultra-thin fiberglass mat squeeze in between the plates that are soaked with battery acid to about 95% of what they can hold. If you had trouble starting the car and the battery failed the performance test you should have replaced the battery yesterday. Asking for help, clarification, or responding to other answers. Is it worth investing in these batteries that they will beyond 3X lead-acid batteries. For the house batteries, four Lifeline GPL-4CT batteries (average online price: $358.75 each) were installed. AGM or gel cell battery replacement is the same as flooded battery replacement. Ordinarily, the load tester at the battery store is sufficient, but given what they said to you, Id at least want to have it tested at a different store on a different machine. Yes for the most part an AGM is a drop in replacement for your standard Lead Acid Battery. Unlike batteries stamped out of a machine, we have 17 quality control checks as they go down the line, which greatly reduces the number of defects to less than .025 percent. It doesn't matter how fast battery can accept charge. Most last to 9a few lasted past 10 years. AGM batteries can often be found in off-grid power systems including environmentally friendly renewable energy systems like wind and solar power. What can the ISS do that a SpaceX Starship could not? I check mine a couple times a year to see when they are getting weaker. Besides topping up the AGM battery prior to install, it took about 20 minutes. The charging characteristics on all Lead alloy is relatively the same such that a charger that works on one will work on the other. Perhaps your AGM battery was empty. What site applications, AGM batteries are ideally suited because AGM batteries provide external venting, in the case when the batteries get overcharged and dont require venting of external pressure. I just want the silly vehicle to start. AGM batteries are used in vehicles with high potential load, therefore one AGM battery should only be replaced by another AGM battery of the same capacity. With either type of battery, system voltage is always between battery voltage and top charge voltage. In the car, this is not a problem, because the alternator normally does not allow for more than 14.4 volts. Going back to Autozone to switch back to a regular battery when I get off work. Secondly, if your cars charging system is set up for a particular TYPE of battery (AGM or flooded cell), you should stay with that type. site design / logo 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. 1 Like. If your 2015 Subaru was built in 2014, the battery is now well over 4yrs old, so Im not surprised it tested bad, That said, if the oem battery isnt an agm, you can stick with a regular group 35. This option validates when there is no battery charger or investment or when you do not want to experiment. https://www.batteriesplus.com/battery/car-and-truck/subaru/forester/2015/h4-2.5l-550cca. If I should replace the battery, is it worth investing $270 for (Northstar Group 35) AGM batteries as opposed to $90 for lead acid? In return, an AGM is less robust when it comes to voltage spikes. DW had a little trouble starting the car (2015 Forester) on some cold days so I got the battery checked at AutoZone. Describe what the car does/doesnt do when starting in cold weather. The lifetime of an AGM battery is higher. Keep in mind that AGM and flooded batteries are both lead-acid: the chief difference between them is that flooded batteries have liquid acid between the lead plates while AGM batteries If the system is not recalibrated, the alternator might overcharge the new battery and cause the battery to fail soon after replacement.". understanding uniformly distributed success probability. An AGM battery is a 12-volt car battery that can be used as an alternative to traditional flooded lead-acid batteries. Yeah, 12.7 volts is perfectly fine but you need to know CCA. This shouldn't cause a problem on the majority of vehicles as the wiring in the car is designed to handle the maximum rated output of the alternator. Batterys are now tested using a conductance tester to measure CCAs. Can the postulates of path-integral QFT be stated concisely? While the installation of the battery may be the same for the two battery styles, some vehicles require an extra step to tell the vehicle that the battery has been replaced. Weize 12V 35AH Battery Rechargeable SLA Deep Cycle AGM Replace 12 Volt 33AH 34AH 36AH 30AH, in Series 24V 36V 48V for Power Patrol SLA1156 Ritar RA12-33 On my three year old battery, I lost a little CCA over the past 6 months so Ill be watching it more closely. Many cars that come with AGM batteries have special charge rates (newer Porsche Cayennes that come with AGM batteries have a setting in the computer for this, for example). Thinking of the limit as an abstract mathematical object. Elsewhere on the Web advice is conflicting and I have no idea who to believe. AGM batteries charge low and slow so a traditional flooded cell battery in your car may not charge properly and therefore may die sooner. The proper AGM charger will not only charge the battery from the deep cycle state, but will also not overcharge the battery, which can be bad for the AGM battery. Keep using it until it stops. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. These are direct replacements for our original 6-volt flooded-cell batteries, but theyre completely sealed, accept a charge faster and perform better in every way. The mats are covered with thick plates and little bit compressed with it. The car may not start or may stall halfway to your destination. I wish to add my experience with a car which when new, is normally supplied with a sealed AGM battery from the factory. This is slightly higher than the 12 volts you find labeled on the side of the battery to allow for voltage resistance in the battery cables. Is it a good upgrade, or a bad idea, to replace their G34 flooded battery an G34 AGM Odyssey battery? Look at it this way $40/year. Keep in mind that as others have said you can have good voltage and still have a bad battery, but any time someone only takes a voltage reading and then tells you its bad solely because its at 12.7v, hes full of it. Before You Replace AGM batteries perform most reliably when their use is limited to the discharge of no more than 50% of battery capacity. It will take some hours to do this. We have had lowest 24F this year when DW had an issue starting the vehicle. Optima is probably the most premier AGM battery on the market. Many cars that come with AGM batteries have special charge rates (newer Porsche Cayennes that come with AGM batteries have a setting in the computer for this, for example). So if a flooded battery costs $100 could an AGM battery that costs two to three times as much really be better? George_San_Jose1 November 2, 2017, 1:18am #15. AGM stands for Absorbent (or Absorbed) Glass Mat I could try my local mechanic but before I go to him, is there any other store, other than AutoZone that would test? AGM batteries have a certain charge temperature I put a AGM battery in my audi a4 1999 , and the computer got confused enough to throw up annoying symbols on the dash , like bulb out errors and the like , so i changed back to excide premium 90AH , I recon the cars computer just could't figure out what had changed ,with the AGM being able to be recharged 5 times faster than the standard battery , but no damage done , every day is a school day . Got both batteries tested and they both show they're bad. A common mistake is to replace an AGM battery with a normal wet lead-acid battery, which can destroy the normal wet battery within a few weeks due to the high requirements. Thanks for contributing an answer to Motor Vehicle Maintenance & Repair Stack Exchange! Making statements based on opinion; back them up with references or personal experience. I think your problem was related to something else. I am not too sure of the healthy voltage. Or you can buy your own less sophisticated tester for under $100. That is all I would need to know . YA book series: 4 books each follow a child with a type of elemental magic, who are brought together in the 5th book, Interaction of \bm with optional argument. A battery usually lasts longer than 3 years. If it matters, Odyssey use pure lead for the plates. Why can we linearize the exponential regression? So my questions are. Several reasons have been quoted in the answers already given why a substitution may be problematic, all of which are valid. However, if the reading is below 10 volts, you need to recharge your battery AGM stands for Absorbed Glass Mat, which is a unique mat designed to trap the electrolyte between the plates inside the battery.AGM batteries are also known as SLA batteries or VRLA batteries. Its an old/antiquated method to determine the actual condition of a battery. Hence I took it to AutoZone to get it checked. And that battery I tested and replaced was a little over 5 years-old, Powered by Discourse, best viewed with JavaScript enabled. I just put 2 AGM batteries in my 08 G8 Gt thinking it was going to be better and after some research it seems that older cars don't know how to deal with the AGM format when replaced being that the alternators aren't programmed to deal with AGM batteries. Absorbed Glass Mat batteries are making with a different technology than the conventional flooded one. Suggest you just go get a new regular battery with a little more CCA before it gets really cold out. Should I REALLY replace this battery? You want to test the battery again? AGM not worth it for most applications. No to AGM, unless you subject your vehicle to severe off-roading. AZ testing kind of reminds me of every battery must be replaced like AAMCO transmissions where every transmission must come out. Even though I have roadside assistance available, I proactively change out my batteries at 3-4 years. Is there a way to force a reroll on a saving throw? What Does AGM Stand For? And even if they lose capacity after a few years, thats no reason to replace the battery immediately. But nowadays, its upper 30s in my neighborhood many mornings. I started seeing high voltages when starting the car (15.6v) then after driving about 6 miles, the voltages would drop to 14.8v (normal for my car), then after 15 miles it would drop to 13.2v (definitely not normal). A fully charged AGM battery has an output voltage of about 13 volts. AGM, Worth the cost? Ive never had the need to replace a battery that was under 7 years old. AGM batteries are capable of being charged at a faster rate, and may draw additional amperage from the alternator if it is not regulated. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Even though I have roadside assistance available, I proactively change out my batteries at 3-4 years. 3: Enlist/Seek professional help. What's the safest way to carry and throw marble sized high-explosive grenades? How can a battery indicator be on when the alternator is providing adequate voltage? I have a Merc and 981 Cayman both have the sensor disconnected, I did it on both cars to get rid of stop/start. Everyone else is using a Lead alloy, for AGM the alloy is Lead-Calcium. Now is the time to disconnect the charger from the good battery and disconnect both the batteries as well. If you live in an area where the winter is exceptionally cold, then you need the best car battery for cold weather out there to give you confidence on the road. I dont understand how youd draw the conclusion that the battery is bad based solely on the evidence of it putting out 12.7v, when thats perfectly within the healthy battery range. With all the rain Seattle gets, why is widespread flooding relatively rare? I thought it should be above 13V. Connect and share knowledge within a single location that is structured and easy to search. As far as I can determine the Forester takes a Group 35 battery. The batterys Cold Cranking Amps are measured to determine the real condition of the battery. You can switch brands if you like, but the charging system in many newer cars will not tolerate a replacement battery that does not have the characteristics of the OEM battery. Nobody load tests batterys anymore. AGM batteries are capable of being charged at a faster rate, and may draw additional amperage from the alternator if it is not regulated. But if the vehicle manufacturer put an expensive AGM battery in the engine compartment, it is most likely for a reason. The way you determine if the battery is bad is to load test it. The main problem was that they were using the wrong type of charger, which did not charge them because of the battery state. What advantages do they offer? Charge AGM Batteries In The Right Temperature. @Bing How would you check CCA? rev2021.4.23.39140. Overcharging an AGM battery can lead to reduced battery life. However, where I live, 390CCA simply wouldnt cut it, so its important to know what you mean when you say cold. If were talking winter is when you turn the AC off and roll the windows down, thats fine. In the commuter car example we referenced, if a flooded battery lasts three to five years, an AGM battery could last six to ten years or longer. Make sure that a battery analyzer is used that has an AGM setting, or your results will be suspect. However, as stated above, its important not to use an old charger specially formulated only to suit the needs of wet cell batteries if you have a VRLA battery. They received a bad rap because people were having a hard time with them, stating they would die and then could not recharged. Two things. With that said, let's not push everyone to install AGM batteries in their cars if the car wasn't designed to use it. Can a bad battery damage voltage regulator? OEM Forester battery is really smallest they could put, with just CCA of 390. . Have any public figures faced any consequences for breaking pandemic rules, especially their own? Costco has very good prices for batteries, a 42 month no questions asked free replacement period, and they definitely have group 35, because its quite common, If the battery should fail within the 42 months, theyll simply swap it out for a fresh one, no questions asked, no games, unlike some other vendors. The charging voltages are almost identical. Hopefully this helps if not, ask away. I agree with Lee. Walmart gave me that kind of readout on my battery a couple years ago. The best answers are voted up and rise to the top, Motor Vehicle Maintenance & Repair Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. https://www.aaa.com/autorepair/articles/when-to-replace-your-cars-battery It seems to be a widely used device. I figure the initial charging of 15.6v (which I've never seen in my car before the install of this battery) is killing the unit. I have an older Porsche Cayenne Twin Turbo that does not come with an AGM battery. When the temperature drops and the weather turns chilly, thats when car batteries struggle. @Tester Where can I get tested like this one? These systems require recalibration with a scan tool if the battery is replaced. TCA: What makes Lifeline Absorbed Glass Mat (AGM) batteries stand out from the competition? Lead-Calcium is even used in the majority of non-AGM battery types, with a minority using Lead-Antimony. Disconnect the battery sensor, you can then use what-ever battery you like as the EMU does not know what type of battery is now installed and reverts to a standard charging regime which is OK for both types of battery. How To Charge an AGM Battery - A Current Affair - How To Do It HOT ROD Untangles A Mystery: How To Bring An AGM Battery Back From The Dead. The following circumstances make replacement with an AGM battery advisable: Large numbers of short trips of less than 10 km or with an annual mileage of less than 10,000 km do not allow the alternator enough time to adequately recharge the battery. But yeah, batteries dont last terribly long here, Batteries that make it to 7 years are outliers here, I live in MInnesota. Whether you have 12-volt, 6-volt, or AGM batteries, our video will show you how to replace them when the time comes. Take the drained battery to an AGM battery specialist. After he checked the battery, when I went to start the car, it showed 11.5V but the car still started in one shot.

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