Mighty Max Battery ML35-12 – 12V 35AH U1 Deep Cycle AGM Solar Battery Replaces 33Ah, 34Ah, 36Ah Brand Product

(10 customer reviews)

Price: $69.99

  • ML35-12 SLA is a 12V 35AH Sealed Lead Acid (SLA) rechargeable maintenance free battery – UL Certified
  • Dimensions: 7.76 inches x 5.12 inches x 7.01 inches. Listing is for the Battery and Screws only. No wire harness or mounting accessories included.
  • SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures, long service life and deep discharge recover.
  • Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures.
  • Backed by a 30 day refund policy and full 1 year warranty.

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Brand: Mighty Max Battery


Mighty Max Battery ML35-12 – 12V 35AH U1 Deep Cycle AGM Solar Battery Replaces 33Ah, 34Ah, 36Ah Brand Product

Mighty Max Battery ML35-12

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replacement battery rechargeable battery 12 v 35 ah battery T3 terminal battery maintenance freeMighty Max Battery ML35-12
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Additional information



‎Mighty Max Battery

Item Weight

‎23.2 pounds

Package Dimensions

‎9 x 9 x 6.2 inches

Manufacturer Part Number



‎12 Volts



Date First Available

January 1, 2010

10 reviews for Mighty Max Battery ML35-12 – 12V 35AH U1 Deep Cycle AGM Solar Battery Replaces 33Ah, 34Ah, 36Ah Brand Product

  1. Clcobi

    I bought this battery to power a 36 pound thrust trolling motor mounted on a kayak. I was able to try it out on the water today and I am happy with the results so far. I was only able to run it for a couple of hours but under continuous use at varying speeds it still had lots of power left when I was done. The trolling motor has 5 LEDs to indicate battery condition and there were still 4 lit after 2 hrs.

  2. kix66

    No, the battery life isn’t exaggerated. They were in our CTM mobility scooter and they were charged when low. When the original batteries began draining their change rapidly, we looked for replacements. We were concerned when we learned the original batteries were no longer available, and after days of reading reviews and specs, we ordered these AGM batteries. We can’t rate the battery life or longevity yet, but we are very impressed with quality of these batteries and they fit and work perfectly. The old scooter has a good range again, and we don’t fear getting stranded.

  3. Louis B.

    I bought this battery for my Bat Caddy golf cart and wasn’t sure about buying online. Pricing wasn’t much lest than buying from the distributor, who was lest expensive than purchasing one locally. After adding free shipping the difference in cost made it worth trying. I use it 2 to 3 times per week and so far I’m very satisfied. I always recharge after use, so I can’t tell you how long it holds a charge but think it’s equally as good as the OEM battery. I definitely would and will buy again from this seller, assuming I receive the same time of life as the OEM battery. After 6 months of use the battery started to lose it’s charge. I took it to a Battery store and had it checked and was told the battery was producing 12 volts. When I contacted the seller they suggested I was charging it improperly. I tried it 3 more times charging the way they suggested, it still lost power prematurely. When I contacted the seller again, they replaced with a new battery that arrived 3 days later. I will still continue charging the new one the way they suggested. All my concerns on buying a battery online were put to rest. I diffidently would not hesitate buying from this seller at all, I will.

  4. Mad man

    I bought the following for use with a Res med air sense 10 autoset: Mighty Max ML 35-12, Schumacher SSC-1500A-CA battery charger, Bestek 300W sine power inverter, and a noco adaptor (cigarette lighter). If I leave the climate control set to auto, the power inverter turned off when the battery hit 23% reserve. That equated to just shy of 8 hours. Experiment 2, I then switched the CPAP unit to manual and turned the air tube heater and humidifier off. The battery was at 72% after 8 hours, but was an uncomfortable night sleep. 3rd experiment was on manual with tube temp set to 68 deg, and the humidity set at level 3. After 8 hours the battery was at 37% and comfortable for sleeping. If need more than 1 night, I would buy 2 and put them in parallel to double the capacity or get their 55 AH battery.

  5. Pacific NorthWest

    I have a resmed CPAP and I assume a low pressure setting from the Doc. I purchased the 12v adapter for my resmed machine and if your cpap machine has that option go for that instead of a power conversion option. conversion is not nearly as efficient as dc > dc. With that said, I have used the battery for the last two nights with the humidfier off, albeit with water in the tank to help with humidity. That is normally how I use it anyway. I find hot air forced in my throat is like mouth to mouth with a grizzly bear. Any who, I just finished my second night using on a single charge and my battery still has a resting voltage of 12.7 which is practically still fully charged. I would say that is a solid 12 hours of operation for me as I can only sleep @ 6 hours. I predict I’m looking at @ 4 daysnights of use before I reach my 50% charge rate of 12.2V where I plan to end my test. Capacity is very good with this battery. If I see anything with longevity I will come back and post, so far, I’m pleasantly surprised.

  6. Thaddeus Hogan

    I use this to power everything in my tent, which to give you an idea has been described by my friends as “an RV without the wheels”. I have a lot of things to power and charge. I have a popular plug-and-play solar package rated at 150 watt/hour, which has been nice but insufficient. I was tempted to buy their larger 400 watt/hour rated battery pack, but at $460 I just couldn’t justify it.I bought this battery along with a cheap plastic battery box, a solar charge controller, and a four way 12v cigarette lighter outlet splitter. Oh yeah, and an inline fuse holder. Total cost was $170, and that was because I didn’t skimp on the charge controller. I got the ritz so I could add batteries and panels galore in the future. I wired the battery and a charge port and the 12v splitter to the charge controller and put it all away neat in the battery box. The splitter is screwed onto the outside and so now I have a portable unit with 4 12v outputs.This battery is rated to 35 AH (about 420 watt/hour) and so gives me 252 watt hours without going under 40% charge. Nowhere could I find a graph for this battery for discharge vs cycle life, but I think 60% discharge is playing it pretty safe for a battery labeled deep-cycle.This powers everything in the tent: Cell phone booster, laptop, 12″ 3amp fan, charges multiple phones, marine radio, air compressor, lights, Bose SoundLink, and runs my CPAP at night. The biggest draw is the fan, but that is only really on when it’s sunny and therefore never costs me amps from the battery. Everything else can run for over three days of clouds should I get that unlucky, and will charge from 40% in 6 hours with the panels I have.The biggest win with using this heavy duty battery vs the popular plug-and-play solar battery pack, is that the other product cannot start my 12v air compressor! The cord on it isn’t long enough to go from the truck all the way back to my PWC trailer, so I was forced to try to back a trailer up to a pump at a gas station. After building a new power pack around this battery, I can add and remove air from my trailer tires as needed and with ease! The compressor draws a solid 10.2 amps according to the charge controller. The popular product is rated to handle this, but did not.I hope to add a second Mighty Max ML35-12 next year for more capacity. This is a perfect size, capacity, weight, and price for portable applications, you will not be disappointed!

  7. Earl

    I have a Garmin Livescope attached to my Old Town Predator MK kayak and I use to have it connected together along with the motor to a 100 amp battery. Well, I found out after several fishing trips of using this setup that about 5-6 hours of using the motor and fish finder together that my Livescope would quit due to the lack of volts left on my 12 volt battery. Since buying this 35 AMP battery I haven’t had any issues in running my Livescope for over 8-10 hours at a time.

  8. DrX

    I use three deep cycle batteries to power a house (converted to 120V AC). When one dies I go on to the next. I’ll work on a house that has no gas and no electricity, and around here, dealing with the electric company is the worst, no shows, excuses, lies, anything they can think to not do their job and show up to put the electricity back on.So, that’s where these batteries come in. The Mighty Max is the smallest of the three, just using it for the lights in the house, and probably all the other do-dads floating around the house like the un-used classic doorbell transformer which I found in the basement. Overall, I’ll get 45 minutes out of it.The other batteries are VMaxTanks which can go for longer, obviously more expensive. The problem I’m having is that VMaxTanks are heavy, and when you have to carry them everyday from my house to be charged back over to house I’m working on, up and down the stairs, across the various rooms, lift it up, put it down, (don’t forget to wear gloves), let me tell you, not only do your muscles ache, but your bones start to ache as well. The heaviest is 70 lbs..This battery is light, 20+ lbs., comes with a carry handle which is real important, the others have a carry handle too. More importantly, the idea of bringing this battery to a job site doesn’t shut me down on just on the thought alone.

  9. Amazon Customer

    Bought this several months ago as a trolling motor battery (It’s small, light, and portable) for my sevylor hf360 raft with a 30lb thrust minn kota. After a number of trips (half day short distance) with no problems I thought I’d see how long it would run under constant load. I brought my oars because I thought surely I would run it down, but….using the highest speed setting (5) I ran up and down Tanners Creek in Lawrenceburg, IN for over 1hr without stopping. Both with and against the wind (gusty 10-15mph) and current. Was surely surprised at the power this battery still had. Started at 13.3vdc fully charged. Ended at 11.6vdc. At this point it seemed to still be fully powering the trolling motor although it took almost 24hrs to recharge on a 1.5amp smart charger. Have since trolled with this battery all day long with no problems. An excellent choice for my circumstances.

  10. Stephen M

    I have had 2 of these for a couple of months now, and have had no problems. They were purchased to replace the internal batteries in a UPS (Cyberpower 1350 VA) that had gone bad with age. Very happy with the Cyberpower, by the way.Some advice for anybody else who might want to do this. FUSE the batteries. Since this is a 24V UPS, I could conveniently wire the fuses (2 20A auto fuses in parallel) between the 2 batteries. That way a short in the wires will blow the fuses instead of burning your house down. You can put the fuses elsewhere if you want, but they should be close to the batteries as that is the source of danger.The Cyberpower will not report the additional runtime, but the reported time goes down more slowly than real time. Runtime is about 4 hours at my load.

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