8agc2 6 Volt Battery
Hennie Jaffe
MK Battery supplies batteries that are manufactured under the most versatile computer control battery formation system and technology to achieve the highest quality. The automated, computer controlled system provides programmed functions for steps of current, time, voltage, temperature and event control to match the performance specifications of your application requirements.
The MK 8AGC2-DEKA is a sealed, maintenance-free, valve-regulated AGM battery with efficient recombination. It is rated non-spillable by ICAO, IATA, and DOT with forged terminals and bushings assuring no leakage. Featuring Individual plate formation (IPF), the MK 8AGC2-DEKA ensures proper voltage matching among cells. There is no need for maintenance with this high quality, sealed construction battery. It presents a dual purpose design that yields deep cycle service and high-rate performance without any added effort. It is available in smaller size capacity ratings and is perfect for use powering lighter loads such as telemetry, SCADA, remote monitoring, UPS systems, LED, and emergency lighting.
I am certain my two factory installed Llifeline gpl-4ct agm batteries need replacing as they won't hold a daylong solar panel charge. (My shore power is out at the moment.) I get them up to 11.1 Volts and within two or three hours they are down to 7 and slipping fast. What are the best replacement batteries for these two? I saw on amazon this option VMAXTANKS 6 Volt 225Ah AGM Battery: High Capacity & Maintenance Free Deep Cycle Battery for Golf Carts, Solar Energy, Wind Energy. I want to do what's best long term. I don't think I want lithium but will stay with AGM. Any suggestions or insight? (My elecrician still hasn't shown up. He says today.) I also saw this last double one but not sure if it is the right replacement. Ideas?
Unless you have previously replaced the AGM batteries in your 2018 Elite, it is no surprise they are dead. 4+ years is within the expected life of batteries with lead-acid chemistry, including Absorbed Glass Mat (AGM) batteries.
Lithium Iron Phosphate (LiFePO4) batteries cost quite a bit more, but have a much longer life, particularly if they are not used daily. Unlike AGM batteries, LiFePO4 battery life depends much more on usage than just the passage of time. So, unless you are full timing in your Oliver, you will likely get 10 years or more from LiFePO4 batteries. Worth the additional investment, in my judgment.
I don't like that idea. I do like recharging my batteries with truck between boondocking locations and I doubt I have the people here to help me with all this technical stuff. Maybe I better stick to the AGM's. Not sure what the difference is between a 12V and a 2-6V other than I only need one 12V. Is it the same size as two 6V? I am thinking my trailering days will be over before the AGM batteries quit again.
Yep.That's a far as I could get, 11.1 and I know that is also why I get the red lights and blinking. I'll have my electrician test the AGM's but I am quite certain they are ruined. This morning they read 4.1 before I set up the solar suitcase. Four hours later it is only reading 8.9 so the charging is working inside and out but the batteries won't hold a charge or get fully charged or get the controller to settle down. I still don't know where those darn 40 amp fuses are in my trailer from the panels to the controller and the controller to the batteries although I assume they are ok.
Thanks Andrew. My electrician just showed up so maybe I'll have something positive to write about tomorrow. When it rains it pours. I'll PM you if I need you to explain something better. My electrician is pretty sharp and also lives pretty much full-time in his RV on some land outside of Gainesville. He is also going to research some on what battery/batteries to purchase for my situation.
1. The AGM's are rated at 220 ah when discharging over 20 hours which is an 11ah rate of discharge (220 ah/20 hours). At a 5 hour rate of discharge storage falls to under 190 ah of which only half (95 ah) is usable without dramatically shortening battery life. Lithium batteries do not lose storage capacity at high rates of discharge like the AGMs and can be discharged down to 15% without any significant voltage drop or shortening battery life. This benefit is very noticeable if one has an inverter and occasionally places large loads on the batteries (microwave, hot pot, etc.).
2. It takes hours to charge the AGM batteries the last 20 percent no matter how large a charger you use due to internal battery resistance that increases with state of charge. Lithium batteries can accept very large charge currents right up to the point at which they reach full charge. It can mean the difference between running a generator for 2 hours versus 5 hours. It also means that you will always be able to continuously store the full output of your solar panels unless the batteries are completely full.
If you do have an inverter/charger installed in your LE , it almost certainly has a LifePO4 charging profile in which case there is nothing else to do to convert to lithium batteries besides removing the AGMs and putting the lithium (s) in and reconnecting the battery cables.
Like I said, you're fine with one battery, as long as you rarely use the inverter. Not a lot of wiggle room, with a single battery. Then again, you've not had a lot of wiggle room with current 2 x 6v.
Thank you. Much to consider here. We got the power up and running today, installed a new transfer switch, and my electrician wants me to power up at least twelve hours before shutting down and seeing if the batteries hold their full charge (I am doubting they will). He is going to look at possible options regarding going with one 12V AGM versus two 6V AGM. My wife and I decided not to upgrade to lithium due to present expenses and we will both be happy if we have to replace our new AGM's in four or five years (meaning we got to live and travel some more). I will update as soon as I decide and we see what tomorrow brings regarding the present batteries. I did notice that the two 6V AGM's I had in my Amazon shopping cart were 1" taller than my current AGM's. That isn't going to work as the Oliver battery compartment is already too tight.
Great help. Thanks. I just might switch to LifePO4 if all I have to do is change the batteries. Our Ollie has solar and inverter and it was made in 2018. Is it really true? Nothing to do but change the batteries?
Yes, as mentioned you can change the Zamp solar controller charge profile. However, our 60A Progressive Dynamics PD4060CSV converter (bundled in with the breaker panel under the side dinette) does not support a lithium charging profile. Battleborn (and I'm sure other places) sells a replacement PD4060LICSV converter with a lithium charge profile. The converter swap-out is pretty straight-forward. A year or so ago I saw them on sale for about $187... I haven't looked lately, and almost everything is more expensive now!
Thanks. That will be the deal breaker for us. Just when it was looking like a great idea. Any added expense at this stage is a no no. I am sure we have the same converter as you. I'm not planning on hauling a trailer around for much longer than four or five years so...
These batteries appear to be the best option for us if we need two new batteries (which I should find out today). Let me know what you think. Link below. Plus they are a bit smaller than my present ones which will help in these tight quarters. You all have been so helpful and kind. Thank you again.
I unplugged the trailer and will monitor throughout the day whether the batteries hold or not. Nothing is running, no lights or fans. One concern was the ah readout which said 0.2. Shouldn't that reading instead represent a full charge after being plugged into shore power for over 12 hours? Hmm
Buy a name brand with solid reputation, a good warranty and a dealer network for future support while traveling. Your intended use (many days off grid) requires this! If your finances are so limited that you cannot maintain your Ollie properly, then IMHO you need to rethink owning it. It will only result in extra expenses and future heartache.
Buy a name brand with a good warranty and a dealer network for future support while traveling. Your intended use (many days off grid) requires this! If your finances are so limited that you cannot maintain your Ollie properly, then IMHO you need to rethink owning it. It will only result in extra expenses and future heartache.
I am not concerned with spending money on something I need. I just want a system that is simple, good, and does what I want it to do. The AGM Lifeline batteries really did not live up to expectations. I am happy to use lithium but it gets more complicated. I am, and have been, maintaining the trailer. But not interested in doing it the rest of my life, whatever is left. Any suggestions for a reputable 6V AGM battery that isn't taller that 10 inches? I am happy to pay. And it isn't the money for maintenance, it is the lack of my know how. I do know my limitations.
64591212e2