The weak cealls continue to charge and the strong start boiling. Thank you so much for your time and expertisecheers Suz from Oz. A Load tester is good for measuring CCA and durability under a load. KOAs resident RV expert, Mark Polk, and his wife Dawn started RV Education 101 in 1999. The 10 amp charger still reads about 9 amps on its meter when charging, and immediately after I disconnected it, the voltmeter showed 12.46 volts. This number is usually half of the CCA rating. BatteryStuff TechAGM technology is essentially the same as a lead acid battery. . Even our comprehensive digital battery conductance analyzer is portable. So where did the sulfur go? For instance, a 500 CCA battery would load test at 250 amps for 15 seconds. BatteryStuff TechHow much was the load amount for the test? Most batteries that supply energy to power our toys only last 2 seasons. Relax, you're with friends. I do this proces at 250mA untill battery saturated, and after turns OFf to let battery to relax. How Batteries Work Battery Technology How to Choose Your Battery Battery Installation Battery Testing & Maintenance Jump-Starting & Charging Recycling Your Battery Home how-to-choose-your-battery reserve-capacity-c20-amp-hour-ah There will be a possibility of unbalancing if both the batteries have different manufacturing date or batch. There could be a short or open cell. Cookie Preferences
BatteryStuff TechThere is no magical formula to predict the length of life remaining in a battery. I have had our motorhome for nearly 2 years and it came with a couple of solar panels one of which is rather large. Now, Ive read that I should not discharge my flooded T-105s below 50%, but in all honesty, that is at times impossible to do. (I believe we brought the charge down on the batteries too far, too often). Reserve Capacity is a very important battery rating. The current one does not hold a charge for an entire 18 holes of golf. BatteryStuff TechIt really depends on the charger you use. For example, if a battery has a reserve capacity of 150, that means it can supply 25 amps for 150 minutes before the voltage drops to 10.5V. Mel SchallotVery good overview of lead-acid batteries. The reason I dont bring them to 100% every time is that the generator needs to run for quite a long time to get the extra 10-15% into the batteries and it seems like a waste of fuel. I only use my car on weekends. James VilleYes, those batteries will work as they are the same dimensions as any 12 volt 22 AH SLA Battery. What is the Life Expectancy of RV Batteries? BatteryStuff TechPossibly. Im a casual fisherman who takes the boat out maybe for an hour a day. Would really appreciate any input youve got. Jeremy FearIt could have had some gassing at some point without actually damaging the cell, as may be indicated by the continued performance. The average battery life has become shorter as energy requirements have increased. The chemistry does not make the same amount of energy as a warm battery. (2)Would you recommend that I replace these batteries with two AGM batteries with a comparable AH rating? I know out of experience that our 10 gauge custom cable that is 8ft long only handle up to 30 amps. is it possible to connect two 12 volt batteries to power my trolling motor (i want to be on the water as long as possible) and if so could i than use one of those 12 volt optima blue top dual purpose batteries as my cranking battery for my engine? Austinthis rlly helped me in my auto electrical class. 14.6 -14.8 volts for an AGM is just right. JAYANTIVery important article on rechargeable batteries. If you have voltage readings in the 10.5 volt range on a charged battery, that typically indicates a shorted cell. VinceI have a cpep that uses 2.2 amp I need to run it of a deep cell and a inverter for 8 hour for camping what what size inverter and deep cell battery would I need? BatteryStuff TechAGM's can hold under higher amp loads at lower depths of discharge, but they are still considered a lead acid battery and do not like being discharged below 50% as it effects their cycle life. Have a nice day back there. The next morning I used the remote start to warm up the car then turned it off and continued to load the car using the remote hatch lift several times. Knowing the meaning of a reserve capacity on a battery will give you a big help to avoid the future issues of battery failure or damaged batteries. Kamran JabbarWhen we use two batteries 12V each in a 24V system connected in parallel. Learn about the pros and cons of different RV batteries and how to maximize your battery life. Rebuilding a power tool battery pack will run around $30-35 and up. You definitely dont want that happening while on the road. Anders DBest written, most through article I have read regarding batteries, thank you! Hot cranking amps (HCA) is seldom used any longer but is measured at 80F. The issue came up when I received a "new" AGM battery that arrived at X volts, and it seemed too low for a proper storage voltage, suggesting the battery may have arrived already a bit damaged. Learn more about how reserve capacity differs between lithium and lead-acid batteries. Thanks for input. but here they are supplying power only on alternate hours. We use cookies on koa.com to help improve your experience by remembering your preferences and repeat visits, troubleshoot how the site operates, and learn more about how koa.com is performing. The test-gig should be portable though. It helps to calculate the battery capacity for long-term backup ampere hour requirements. They are commonly found in race cars. How Can You Maintain the Life of Your RV Batteries? It is possible that other automobile manufacturers have similar problems. Depending on the parasitic load we have seen batteries discharged in a few days to a few months. The measurement is one of the specifications of a 12-volt battery.It shows the amount of time (minutes) that a fully-charged battery can deliver 25 amps of power at 80F before falling below 10.5 volts or 1.75 . The 2 cables that were used to connect the 12v batteries in parallel are also of this taped-up homemade variety. If the unit is a smart charger, like the 3-stage microprocessor controlled chargers we sell, then its safe to leave on the battery forever. The first question is AGM or a small gel cell? Cranking Amps are measured at 32F. Since that time RV Education 101 has helped educate millions of RV owners and RV enthusiasts on how to properly and safely use and maintain their RV. Thanks for any insight you can provide. Theyre fragile. If batteries read severely low voltage, most automatic chargers have trouble charging. These forward-looking statements are based on managements current expectations, assumptions, hopes, beliefs, intentions, and strategies regarding future events and are based on currently available information as to the outcome and timing of future events. The only cause I can think of for the caps popping off is overheating. Commonly, AGM batteries charge best at a higher voltage, but those chargers would damage the Gel. The new premium battery on the market is the Lithium battery, often referred to as a Lithium-Ion or LiFePO4 battery. If something is wrong with the alternator, the engine starts taking battery power. This is why QuantumScape subjects its batteries to tests over many hundreds of cycles, with fast charging speeds andtypical operating conditions. Garry McdonaldRE; Can anyone please help? I could not see any fill lines as to where the level should be. 1997-2023 BatteryStuff.com LLC. MarissaI just bought a JL 50 scooter and the battery it came with is a12. If your changing charger, converter, or inverter (or an all in one) then we recommend you look to that manufacturer for recommendation. BatteryStuff TechSome bubbling and smell of sulfur is normal for large flooded batteries. I live in the UK and have a QUICKIE Jive Midwheel drive wheelchair made by Sunrise Medical which uses 2 12volt 70 amp sonneschein GEL Batteries I Have a 8amp Gel battery charger but in the 27 months I have owned the chair Ive had to have 4 sets of replacement batteries as they fail after 6 months apparently ( according to the manufacturer) because of a faulty Cell. However, in reality, if you discharge a lead-acid battery (what you likely have in your RV) more than 50% of the rated capacity you will greatly shorten the life span of the battery. Why ? Additional information concerning these and other factors that could materially affect QuantumScapes actual results can be found in QuantumScapes periodic filings with the SEC. Sulfation is like trying to wash your hands while wearing gloves. The key thing you need to know with isolators is that you need to match the chemistry so that it knows how to charge the battery correctly. The vehicle was manufactured with a 24 volt electrical system, which uses two batteries in series, of 12 volts each. It is rated in Amp Hours (AH) or Reserve Capacity (RC) instead of CCA. If you are not sure, the gel setting is always a safe option. VIDEO How a zinc-carbon battery is made, VIDEO How an alkaline based battery is made, VIDEO How a nickel based battery is made, The discharge rate used to determine the batteries stated capacity (usually 20 hours), The Peukert Exponent (a figure supplied by the manufacturer). M18 Milwaukee Battery Comparison Chart: Differences Explained, Who Makes/Sells DieHard Battery? I was thinking about trying this before I spring for new batteries. I took the car to the dealer the next morning to have it checked out and was told the battery was good as it checked out at 12.3 volts. An example: Let's say you have "toys" such as an ATV, classic car, antique car, boat, Harley, etc. If only capacity is reported, you dont have everything you need to understand how that battery would fade over time in a real-world EV. AdminBaking soda and water, but not in the battery!, just for the terminals and connections. If you are charging a battery and then you use it at the same time, the charger will attempt to supply the load. 1)Instead of two identical but separate battery banks as configured now, reconfigure the 40 batteries in one battery bank. BatteryStuff TechKeeping a battery on a trickle charger will prevent self discharge. I think this is what I need to look for as I am looking for batteries for a trolling motor. I left it for him to fix. I would suggest charging the batteries with your normal plug in charger and see if it is able to get the batteries to full charge with a good specific gravity reading. If I have a 80 Amp Hour battery and use a winch that is drawing 435 Amps under load with a 90 Amp alternator on the vehicle, how many minutes can I winch before I fully drain the battery or cause the vehicle to turn off? I can find many references to external chargers, however I have, so far, been unable to find any information on what needs to be done to upgrade the charging system of the ATV for gel. With those devices, plating thickness is directly proportional to the integration of current over a specified period of time. KyleIf you have a bunch of 12V deep cycle batteries paralleled (or groups of series 6s then paralleled to make 12V) is it best to isolate each group so that at night the batteries are not fighting each other. If the battery is draining rapidly in 10 hours at 1 amp, I recommend you use our online tools to calculate if thats a good size battery for that amount of draw, or if the draw time should be shortened for the sake of the battery. and that too during the night only. Gassing should not be an issue if the battery is healthy. Thats a lot of juice since its a constant draw, not a quick burst. Similarly, an E-rate describes the discharge power. I have a 200w Solar suitcase and a 100 watt panel on the camper. Hundreds of KOA campground job opportunities for those who love the RV camping life. I have a bank of 4 Trojan lead acid batteries for my house bank and another lead acid starter battery. This means that a 200Ah battery can run a 10A load for 20 hours. When you start reviewing camping options, your history will display here to help compare sites and find the best stay. BatteryStuff Tech7-8 volts is extremely discharged. The woods are not that short in places, and at timeswell mud is mud and you cant predict it. What is a deep cycle battery? How you discharge and recharge the batteries. BatteryStuff TechSince the batteries will be connected together via switch, I recommend using two of the same battery types and sizes. YloonI have been charging my dead battery for 4 months using pulsetech smart charger. in turn, that results to less power and pre-mature failure. James VilleMobility Scooters use both AGM and Gel batteries. in Management from Stanford Graduate School of Business. Could I have damaged the battery? This is the number of minutes a fully charged battery at 80F will discharge under a 25 amp load until the battery drops below 10.5 volts. Is it possible? For more information, please read GEL Vs. AGM. Otherwise, you can use a single OBD-48 for all four batteries in series. . You still wont see a full charge. When ignition is off, the fridge stop drawing current. 1) Two UPSs. 15.9 volts is on the high side as far as charging goes. Please be aware that we are not home solar experts, and it might be best to contact a local home solar expert. Did you install the vent tube that comes off the side? Im not ready to replace the Trojans, so should I just buy another lead-acid starter to tide me over until my Trojans die? Reserve capacity rating is a more accurate assessment of rating than amp-hour. This will charge at a rate of 73 amps per hour (35% of battery capacity). It read 16v and 17v. CainHi, Thanks
WOW! HaroldThanks for a very informative article. Life span depends on usage and depth of dischargeusually 6 to 48 monthsyet only 30% of all batteries actually reach the 48-month mark. We are looking at a 12v 260 AH AGM battery using a 140W solar panel to charge. To measure voltage, use a digital D.C. Voltmeter. And now theres an AGM??? There is probably a good amount of sulfate crystals on the plates in the cells, which would cause the charger to work harder to maintain the float mode. Also what is the best battery to use as the trucks have different batteries in each of them?? We are using deep cell wet batteries 175AH (D27s) one battery in each trailer. When batteries are charged for too long or at too high of power, numerous issues can result. Average battery life has become shorter as energy requirements have increased. The battery is a sealed maintenance free battery. They are built differently and using them in ways they were not designed for will cause damage to the battery and shorten their lifespan. 1)Would the battery charging circuits in each UPS somehow interfere with each other? Is the battery in the garage? Advantages: Thanks, great site. However after 5 hours of constant running the scooters meters were still showing full and the volts where at 48.7 and my volt meter was showing 48.6 volts. at this time. 2 trojan deep cycle 225 130 amp each output 12V Its also good to know about all kinds of batteries so you are familiar with the options. LET ME KNOW IF YOU CAN HELP The amp hour rating determines how long your battery can run before it needs to be recharged. I dont want to upgrade the alternator but I also dont want to overly stress the one Ive got by having it regularly recharge a battery that is often going to be drained close to max (50 percent). My motor is a Ford Lees 85 HP deisel. Cold weather is also hard on the battery. With no answers I decided to drain the batteries of two scooters by running the motors with the throttle on full and turning the lights on. I first thought the regulator was bad & replaced it. The batteries in the units are large enough where the CCA can jump start a car. ToddI am purchasing a 125 watt solar panel and want to purchase two 12 volt RV batteries.I dry camp alot and want to be able to maximize my reserve capacity using the solar charging to replenish the drain on the batteries. Letting the battery sit gives you the most accurate result on how the battery will normally act. I do have a generator that i plan to use to recharge the battery when necessary, but am wondering if it would make sense to leave a solar charger hooked up to the battery constantly. Thanks for your reply. Eric Robertshi this is a common problem, many battery manufacturers make batteries that they claim are leisure batteries. Question: It's important to understand the difference between amp-hours (Ah) and reserve capacity (RC). It wasn't long ago when trailers or motor homes had only a single 12-volt house battery. Thanks for sharing! It will technically work. The charge allocated to the batteries really depends on the status of each one. The 230 Volt AC Output of the two UPSs would remain the same (as independent outputs) in the proposed setup as they are now in the existing setup.). Give us advantages in terms of cost & safety while selecting the type of battery. Thanks! After 5 hour only dropped 2 volts while protection shutoff is 42 volt. Use only mineral-free water; distilled is best as all impurities have been removed and there is nothing left that could contaminate your cells. Thats unfortunate. Any ideas you might have would be geatly appreciated. Twice over the past 3.5 years the charging system has overheated the large battery until it failed. As far as which batteries to use, I suggest deep cycle batteries, not car batteries. The batteries in the trailers only get a 1/2-1 hour charge from the 7 way trailer plug when they are ran to site and dumped. If you are refereing to a solar charger, its also designed to charge the battery, not only when the car is stopped, but the engine is off as well. SilasSir I will be very thankful if you guide me to build a charger of a 4 volt Li ion battery(which I have dismantled from my old laptop battery)Thank You. You should find that very informational. An onboard de-sulfator like the Power Pulse or ODB from Battery MINDer would be recommended to fix that battery. Remove all jewelry. BatteryStuff Tech11 volts cannot be a short cell, as each cell can read 2 volts or more. However, most load testers will either allow you to input the CCA or in the case of an analog tester it will show you a graph the battery should test at. Marine batteries are designed for boats instead of RVs. The relationship between current and time both depend on one another, as given by the amp-hour rating. How can a person determine how much sulfation has occurred inside a battery?
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