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Technical Data
12V AGM Performance Charts
12V GEL Performance Charts
6V AGM Performance Charts
LIFEPO4 Performance Charts
Number Of Cycles vs Depth Of Discharge Graph
State of Charge Chart
Float Charge Voltage vs Temperature
Application & Use Guides
DC Winches Application Guide
Estimated Wire Sizing Chart
Trolling Motors Breakers and Cables Chart
Est. Run Time Calculators
AC and DC Loads
DC Motors (HP)
Sump Pumps
Trolling Motors
Water Pumps
4.7/5 Stars out of 10 Reviews
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Earthly Angels (United States on July 24, 2012) | February 3rd, 2026
I got the 35 amp hours rated battery (35 amps for an hour) and rated for 18-40 lb thrust trolling motors. Mine is 30 lb thrust. The 'AGM' type, deep cycle, sealed battery was well packed (box in box) and has 2 terminals with hex head bolts that are screw in bolt with washer type posts clearly marked with a reddish color plate for the positive contact. It was 100% charged when I received it. Sturdy white plastic 4-attach-point handle. The real nice surprise is its size and weight. I had a WalMart battery (like a regular car battery dimensions) for several years that finally failed, but performed well. But the VMAX857 is considerably smaller in all dimensions and a lot lighter. One hand handling versus a heavy 2 hand weight for the WalMart battery. For a canoe or kayak outfitted with a trolling motor (mine is the Native Watercraft Ultimate 12), weight and size are paramount. So the VMAX is a much better choice than a 'dual purpose battery' and can be run down to about 1/2 capacity with no harm. By using a 'PWM' digital controller ($25 on eBay), the current draw is reduced a lot and more usable power to the motor. For a casual trolling motor duty, used at lower speeds (like 1-3 of 5), this battery should recharge over 100 times if normal. I used it for the first time today, always at low or 1/2 speed for about 1 - 1.5 hrs running time. When I got home, I put it on the charger and it was still 100% charged! January 1 2013 update: Now that I used it most of the spring and all summer into October as a trolling motor battery, I can tell you that it works great for my small 30$ trolling motor. Having an electric motor rigged with digital PWM speed and pushrod type steering control for your canoe/kayak opens up a lot of fun! Paddling is slow, you cannot fish as you paddle, and if a storm comes up.... with a motor you have a way to get to shelter more quickly than paddling (and I paddle as well as run the motor!). If you insist on a canoe, get a square backed one for a troller or outboard (typically 2-5 hp). And look at the Native Watercraft Ultimate series!
Doc Holiday (USA on December 7, 2019) | February 3rd, 2026
I bought this deep cycle battery to set up a portable battery minder for my Harley. Through the winter months, I put my Harley in a dry storage unit and there is no electricity there. I didn't want to take the battery out because I may just want to ride it at the spur of the moment. So on this battery, I connected a 150 watt power converter and plugged my battery minder into it. It's been connected and operating non stop for 3 days so far and the voltage in the battery is currently around 11.5 volts. It's only dropped 1 volt since I started this test. If this battery continued on this pattern of loss, it could hold up for 30 days. My plan is to bring this battery home recharge it as needed and reconnect to trickle non stop while the Harley is in storage. I'm at the beginning of testing this so I will try to update as time goes on. The picture shows my set up. You can barely see the power converter because the minder is covering it. It's not big. Smaller works best in this case. This minder won't charge a battery. It just keeps a charged battery charged.
Nancy B. (USA on 6/29/2025) | February 3rd, 2026
I have a 55 hp digital motorguide R-3. Before you all jump on me for buying the wrong battery let me tell you I have arthritis and can't pick up more than 25 pounds and the proper battery would be over 50! i live on a small private lake and am using this for my hillbilly floating wooden dock. So i gave this battery a try since it is highly rated (in general) on battery rating web sites. i took my dog and used it full throttle to the other side of the lake then got nervous and took it easy coming back. it was at half charge. then a few days later i took my dad and dog for a ride. I didn't do it full throttle but i did have to get us out of the weeds. it said half charge again when i got back. if any of you know of a better battery that's not more than 25 pounds I dare you to find one. I'd rather buy a second one of these as a back up and carry one at a time to my hillbilly dock than wait for someone to help me.
Flyinlow (USA on 6/29/2025) | February 3rd, 2026
I've waited over a month to write a review, because I honestly didn't have a lot of confidence in these batteries. I bought 2, to run a 24 volt trolling motor setup and I also have it powering LED lights for the front of my boat (1 spot, 1 flood). These batteries are MUCH smaller than your typical deep-cycle trolling motors. I was concerned about the longevity of the charge given the size. Well after a week long fishing trip, and lots of trolling motor use, I am quite happy with my purchase. These batteries are significantly lighter than your average deep cycle, which I see as very beneficial in a boat. I ran my lights, trolling motor, and never once noticed any evidence of discharge. I plug in every night at the dock, but these batteries never once let me down. I'm a firm believer in the one is none, two is one concept, and I previously only had 1 battery in my boat. Well my theory proved itself, when I got to the dock after a 10 hour drive to the lake, my main battery was dead...4 volts, and I have no idea why. I used jumper cables to jump start the motor from one of these AGM batteries, and it was up to that task as well. That saved the day. My main battery came back after charging, but had I not had backup batteries on board, I would have had to jump it from a car, and I would have had no confidence in spending a week out on the boat daily and knowing I had power if my main battery failed again. I hope these batteries last, but I have had great experience with AGM batteries in the past and despite these being an unknown brand, they are living up to my expectations for an outstanding AGM battery.
Sue (USA on 6/29/2025) | February 3rd, 2026
(YEAR 2017) I mounted trolling motors (Minn Kota Endura C2 30 pound thrust) on two kayaks (Sun Dolphin Aruba 10 and Future Beach Trophy 126). At high speed (5) continuously, the battery lasted over one hour. Running at speeds (3) and lower, the battery lasted over three hours. The Vmax857 suited my needs for fishing and joy riding around the lake on kayaks. (YEAR 2018) In the winter, I used a trickle charger set at 2 amps deep cycle for 2 to 3 minutes almost every day to keep the batteries fully charged. I went out on our kayaks for the first time this year, hoping the batteries were still good. The batteries performed just as well as last year. (YEAR 2019) 6/24/2019 In the winter I continued using a trickle charger deep cycle for 2 to 10 minutes almost every day like I did last year. The batteries still work as well as the day I bought them two years ago. I purchased two more Vmax857 batteries. Now I have two batteries in each kayak running through a battery selection switch. Now we have twice as much fun and time. The size and weight is perfect for kayaks.