Is this ok to use on AGM batteries? I understand the charging requirements are a little different.
454681
I would not recommend extended use on the AGM batteries. It's OK to use on occasion if you need a quick boost. The charging profile on a lead acid battery and an AGM battery are different and over time this charger could shorten the service time/life of an AGM battery.
903318
I am using this charger on a 10Ah battery in the trunk of a street rod, and am completely satisfied with its performance. You might be happier with a rapid AGM charger, since that might minimize the time your generator would need to run. This charger slows down the charging as the battery nears full charge, then goes into maintain mode (charging, allowing slight discharge, then charging again to keep it at full charge).
321979
You should read the Battery specs. AGM batteries if charged at 12 volt DC only. NOT 12.5 to 14.5 or more, like most chargers. AGM's will take an Unlimited amp charge at 12 volts . Its the charging voltage thats critical with AGM's Check the spec's at Optima's website or any info about AGM's. I have the 1500 model and it charges at 12 volts only. Works fine on any battery AGM ATV's and big Sears Platium Odessy AGM's and brings back to life old trailer lead acid's.
1157690
I use the 1 to 5 for charging hi-capacity batteries with no problems. It takes longer than charging just one, but that is to be expected. I'm not aware of any alternatives.
1193133
Fully charged agm battery will be around 12.9V. My mppt charge controller blinks when battery charge goes 13.4 and after 1 hour stand by it will go 12.9 V which is sate of full charge (confirmed with Concorde sun xtender rep). But for some reason mt-5 shows 50% and it is wrong. I will find out with monitor manufacturer and update later.
1984480
A couple of things to know about these type of batteries. One never let them sit for long periods of allowing them to discharge below 10.5 volts. They will not recover. I have a battery tender in my boat which regulates these batteries at full charge at all times. Second your charger should have a AGM setting. You can find what you need on optima's web site. http://www.optimabatteries.com
2049612
they claim 2000 cycles with proper lithium charger, starting it 2xs a week, that should last 20 yrs LOL. If that were true, one would never need another battery if riding that infrequent. My agm only lasts 2 yrs and that is keeping it on a tender 24/7. Every 2 yrs like clock work.
217036
I have not installed it yet. It was a Christmas present for myself for a 1976 Airstream that I am restoring from frame up. My plans are to make this a completely off grid machine for emergencies as well. The kit did not include a battery charger (converter) so I need to purchase that. My research has led me to the decision of purchasing AGM batteries. You can put these batteries in an enclosed area and not worry about gas fumes, acid erosion. The gel batteries should hold a charge longer and I would highly recommend them to you. Speaking from experience if you have older acid batteries that have been sitting for a few years you probably will not get a charge. And if you had them sitting on a concrete floor they are finished. I hope this has helped. I am impressed with the kit from what I have seen and Go Power has a web site you can go to and watch videos for install.
1487938
I haven't used it with an AGM battery, but in my experience the charge topping off followed by float charging sounds perfectly normal. I don't know what the tripping sound is. Maybe I just haven't heard it?
1494730
Waiting to hear back from Yuasa. I have 2 of these chargers. I recently changed one application from a lead-acid to an Absorbtion Glass Mat (AGM) battery type, which is the same generic type as your Optima. So it just occurred to me that I should get the official answer on this as well. For what its worth, I had a conversation this morning with a tech at Batteries Plus and was told this type of charger will work on AGM as well as Lead-Acid. From personal experience, because this is a trickle charger, it may take a number of days to fully charge a discharged large capacity battery such as yours. Waiting to hear back from Yuasa. I have 2 of these chargers. I recently changed one application from a lead-acid to an Absorbtion Glass Mat (AGM) battery type, which is the same generic type as your Optima. So it just occurred to me that I should get the official answer on this as well. For what its worth, I had a conversation this morning with a tech at Batteries Plus and was told this type of charger will work on AGM as well as Lead-Acid. From personal experience, because this is a trickle charger, it may take a number of days to fully charge a discharged large capacity battery such as... » Read More Waiting to hear back from Yuasa. I have 2 of these chargers. I recently changed one application from a lead-acid to an Absorbtion Glass Mat (AGM) battery type, which is the same generic type as your Optima. So it just occurred to me that I should get the official answer on this as well. For what its worth, I had a conversation this morning with a tech at Batteries Plus and was told this type of charger will work on AGM as well as Lead-Acid. From personal experience, because this is a trickle charger, it may take a number of days to fully charge a discharged large capacity battery such as yours. « Show Less
825623
If you're asking if you can recharge an AGM battery that has been fully discharged, the answer is yes, but most standard battery chargers won't work. Either need an AGM specific charger, or there are some tricks you can use to make standard chargers work.
608858
Yes, I bought them for my UPS systems protecting computers, high buck TV's etc. The last units I bought are of absorbed glass mat (AGM) design. This is the best available generally and charging isn't as touchy as the paste designs. Charging using wet cell parameters (like most auto batteries) works fine although there are AGM specific chargers. My experience with AGM is they are tough, reliable and a big improvement.
650424
That should be fine. The charger was 'specificly' designed for AGM batteries. But, it will work on any battery type. google "agm battery" if you're curious
1018656
You need a charger that has a setting for AGM batteries. My charger has settings for 3 types of batteries, standard flooded, AGM and gel. Optima recommends a 10 amp charger.
611341
Yes, I feel it charges all my batteries properly. I have used it on conentional, deep cycle , and AGM batteries. I select battery type and like to use the percentage readout and watch till it it reads 100%. This can take longer than you might expect as I think it tapers off as battery fully charges.
825301
I have found the G3500 to simply not do the job on any troubled batteries. I now use it simply as a battery tender for a healthy 12v battery and bought a Schumacher SC-1200A which does a much better job on unhappy batteries (and is much cheaper too!). From what I am reading the whole business of desulfation is somewhat of a myth, so there are limits to what any charger can accomplish.
1080744
Most any good charger will work. Check to see if it has a special setting for AGM batteries. If so use it.