I have a bank of 8 of these batteries connected in series / parallel in a 24 volt setup driving one 2000 watt and another 4000 watt pure sine wave inverter and the system is charged by 24 100 watt solar panels running through two MPPT charge controllers. I have had the batteries and whole system up and running for going on 12 years now and the batteries are still charging well and holding a charge. The system is used to power my 27" iMac, a Sony TV, a DVD, VCR player, vacuum tube hifi amplifier and at times it powers a portable 12,000 BTU AC unit. These batteries in my application seem to have a very long life. Where most car batteries seem to give issues in as little as 3 - 4 years, these seem still good at 12 years now. I will say that with my solar charging system, the battery bank is allowed to fully charge up every day, so they never sit discharged or with a low charge. I don't know how well they would last if your application is such that the batteries would be left discharged or partially discharged for a day or so at a time. Most batteries tend to fail when left fully or with a partial charge will not last as long. partially discharged a lot.

Had ten serve me well in a bank for close to 10 years now. It's finally time to replace them. Job well done.

Ive been using this batterys for over 10 years. Really good.

I'm using this to power a 3Kw inverter in my work truck. My last battery was a 105AH Concorde which lasted me about 8 years. The price of this 125AH battery was the same as when I purchased the Concorde 8 years ago. It had good reviews so I took the chance. The battery was a bit bigger than my old one, but still fit into the space I dedicated for it. I had to make a small adjustment for the extra height. The bolt terminals were aligned the same way as my old battery so I didn't have to make adjustments for that. I charge it using a 3 stage charger. It powers my inverter well. I did a test using a DC clamp ammeter and when I plugged in my clothes iron it was able to supply 92.8 amps until the iron got hot enough to trip the thermostat when it reached temp. I power saws, drills, lights and other construction type tools with the battery/inverter combination.

2 batteries for 3 years on board a camper van and they are finally starting to give out. We have not been nice to these batteries. They are utilized 100% off-grid and mostly off-road, attached to 320watts of solar in Oregon. It’s not really sunny here if you didn’t know that. We’ve stored them underneath the van, outside on a tray. In short. We do not treat these batteries well, but they keep on ticking. They have been cycled over and over and drained below the 11.7 amp threshold multiple times. Had them in -0 temperature multiple times in Wyoming and Colorado. They are finally starting to show wear, not holding a charge like they used to. I can’t find room to complain. I just looked underneath and they are caked with mud and covered in grime from streams, dirt roads, you name it. I’m going to replace them with the same. The cost of lithium is still a little too high and these batteries work hard. If I can get another 3 years, that’s over $1k for 6 years of service. Maybe by then, Lithium prices will have come to their senses.

Used as backup battery for sump pump.

Looked at a lot of different batteries before settling on this one. Installed it as an auxiliary battery in my overlanding vehicle and hooked it to a 30 amp dc/dc charger. It's super heavy but I expected it to be. At 125Ah capacity it has one of the largest capacities of similar sized units. I really liked that the manufacturer clearly stated the charging parameters on their website for this battery so I could set up my charger accordingly. Been using it for a couple of months including a couple of camping trips with my dometic powered cooler running for a few days and other items running of a 2000 watt inverter I have hooked up to it. The battery has not complained once and charges right back up. I love it. I'm sure that charging at the correct voltages for the different phases of charging (bulk, absorption, and float) will help with overall battery health and longevity. I would not recommend charging this battery with a basic battery isolator. Use something with smart circuitry and preferably something that allows you to program the charging parameters.

These batteries are great quality, if a little heavy. Seller sends out really fast too. This is my second set of these batteries and I highly recommend them.

I bought this same battery 9 years ago and thought it was time to replace it, even though it still held a charge. I would have gone with Lithium but did not want to change out older charger.

Very heavy batteries and with free shipping a great deal. I searched for weeks on several web sites and could not beat these batteries for the 125 amp hours and the price. They had several top notch reviews and claim an 8 year life span. Having gone thru several lead acid batteries over the years even with constant solar trickle charge and topping off the water level, I could never get more than a year out of the old style batteries. I like that they are maintenance free, can handle rough roads and bouncing around, since I plan on boon-docking on back-country forest service roads. My last battery could not make it thru the night running the heater, so not only do these have more amperage, but instead of one battery I'm running two and I've set up a 4 panel solar charging system to keep them recharged each day. Yes it was expensive, but I really didn't like waking up to not just a dead coach battery but also the main engine battery drained as well. I accidentally had the engine cutoff switch in the wrong setting and it drained the engine and the coach battery running the heater in the cool desert during spring break. Fortunately my old single panel solar panel recharged the failing coach battery enough in three hours to start the generator and then recharge and start the RV. I camp too far off the beaten path to risk having a cheap battery fail. Expensive, but worth it!!!

Update: When I bought this for my solar system, I was so impressed with its performance that I bought a second one. for a couple of years they easily held 100% charge without recharging. Now after over 4 years of constant discharging and recharging they are still able to hold a 95% charge almost indefinitely. If I remember I'll try to give an update in another 4 years.

I bought 3 of these in 2020 and connected them to a solar panel setup. More than 4 years later they are still performing basically as new. Absolutely zero issues. Kind of remarkable actually.

We have been using 3 of these as the house battery bank for our 4x4 type-2 ambulance conversion. Before we installed them in our battery box, I dropped one out of the ambulance right onto its corner. It chipped off a small piece of plastic, and I wanted to make sure they were still safe to use, as I have very little experience with AGM batteries. I contacted VMax Tanks directly with some photos of my blunder, and they were extremely helpful, reassuring me that the battery was safe to use, while advising that I seal the chip to prevent long term loss of moisture and potentially decreased life. Top notch support. Our setup: The 3 battery bank is currently hooked up to a Renogy 40A charge controller on the *sealed acid battery* setting, which best matched the recommended charging rates. It's also connected to the old Xantrex FleetPower 2000 charger/inverter that came with the unit, which we left on its "flooded battery" setting, since it is much closer to the target charging rates than its "gel battery" setting, and never attempts to equalize the batteries without manual intervention (which should NEVER be done to AGM batteries). It is also capable of receiving charge from our dual alternators (through an isolator) which is regulated at a constant 14.3 volts. We can manually disconnect the batteries from the isolator, which is important in the very unlikely scenario that we seriously drain the house batteries (beyond what we ever should) and need to drive before the solar has had time to recharge the house batteries at all. With a low internal resistance, deeply discharged AGM's are subject to charging more rapidly than their ratings if placed on a charger that is only voltage regulated and capable of supplying more current than the bank's max charging current (our banks is charge-rated at 90A total, while our alternators are capable of delivering 220A).

Great Battery and Super Awesome Seller! I WILL BE ORDERING MORE! Had a problem with the delivery address, and they quickly fixed it for free! Got the battery in just 4 days! SUPER FAST SHIPPING, THE BEST CUSTOMER SERVICE. I'm using this as a second battery in my RV. My friend has the same one in his RV from 2 years ago and its still going strong. To get the most out of this battery, use the PAC BG-12 and a relay to shut down any equipment your running. It will prevent over draining the battery by cutting power at 11.6 volts and has a LED to warn you of low voltage. Secondly when storing your RV, or whatever your using the battery in, disconnect the negative side cable AND get a cheap float charger. If your not using it, don't just leave it hooked up to stuff. It will slowly drain it. Kinda like when you leave the batteries in that emergency flashlight. Then when you need it, it doesn't work. When you go to replace the batteries, they are all crusty. That's why. DON'T store stuff with batteries in them! DO NOT OVERCHARGE or DEEPLY DISCHARGE THESE BATTERIES AND THEY WILL LAST FOR YEARS. If charging with a AC 110V household type charger, make sure its a SMART DIGITAL charger. Solar charging systems usually already have this built in. Automotive alternators are also okay to use as long as its not completely dead (9 volts or less) If it is deeply discharged then use a AC smart charger to revive it. REGULAR OLD FASHIONED CAR BATTERY CHARGERS WILL KILL THESE BATTERIES. SAME GOES WITH THE OPTIMA BATTERIES. One of the reasons they have gotten a bad reputation. Any AGM (Absorbent Glass Mat) battery needs to be treated differently than the regular lead acid batteries. This one is a heavy sob 75lbs. so with FREE SHIPPING, you can't beat the price. Sorry, no more Trojans or Optimas for me, VMAX is my new goto battery.

Bought in 2013 and I am amazed they still are going strong. I use them in parallel with my Xantrex ProWatt SW 2000 inverter (also excellent) to run our household full size refrigerator/freezer during power outages. I have run it for several days without having to use mt EU2000 Honda generator. I don’t think I’ve started the generator in a couple years (usually run it off my propane side). I would definitely buy these again (if they ever die).

I've used the SLR125 in several solar applications and never had any issues. These are excellent batteries, thank you!

We have been testing batteries for our remote systems for about three years now. The VMaxtank is the timex watch of the bunch, it keeps on ticking. Solid build quality, steady performance at a reasonable price. Many of the battery packs we have tested are much more expensive, but only perform marginally better. We have and will continue to use the Vmaxtanks.

Excellent product, great price! BEST AGM BATTERY ON THE MARKET! Will order again.

Kept my refrigerator running all night without fully discharging the battery. Power draw was around 135 watts. Planning to buy a second battery to run in parallel for longer running time. Also really like the sealed design so I don't have to worry about fumes or leaks. Very heavy battery though.

I bought this as an alternative to a marine battery. It fits in a standard series 31 marine battery box. I installed it and hooked it up to an AGM charger and too it out the next day for an overnight meteor watching trip. I ran the anchor, cabin, and nav lights for several hours. We also ran the GPS overnight with an anchor alarm on. After a 12 hour trip it started the 15 HP motor vigorously and provided power all the way back to the dock. When it was hooked back on the charger I found it still had %20 capacity left. I am impressed with this and its ability to deliver a full 12V high amp current even at a low charge. I plan on purchasing another one soon to be able to do multi day trips without hitting shore. We had taken a spare old deep cycle hooked to the solar panels but did not need it at all. Did I mention its a local product? Arrived to Toledo, Oh. From Midland Mi, in less than 24 hours from the time I ordered. I didn't expect to have it for the trip and was much relieved when it got to me in time to be charged up overnight. It is a heavy sucker so be ready, I have the old deep cycle in the opposite side of the boat to balance her out. Update 1 year later: I just bought battery#2 to make into a dual battery system on my sailboat. We were out sailing with a 30w solar panel and an auto pilot for 7 days and had no issues and 50% battery on day 7 60% batt1 40% batt2. We did no conservation and rarely hit shore, preferring mooring buoys and privacy. I bought my second battery direct from the sellers warehouse, with a cash discount no less. If you are in the downriver detroit area give him a call or an email. He also threw in a few freebies for driving 60 miles that were much appreicated, I will be replacing these in a few years with the new 155AH version or more, but there are great for solar storage and I have no issues in a year of use. ALSO this battery retained 90% charge in storage over winter on my garage floor. Super tough battery, I will be adding in a new dual battery meter next week then maybe post pictures of the setup.