ECO-WORTHY 12V 50Ah 4Pack (Pack in Series to 48V 50Ah) LiFePO4 Lithium Battery, Up to 15000 Deep Cycles, Replacement of Lead-Acid, for Golf Cart, Off-Grid Solar System, RV, Scooter, Trolling Motor

Edit: I've had the batteries in use for 15 months now. I fish at least once a week, and sometimes 2 or 3 times, so I have around trips on the batteries without an issue. I don't know what more I could want from them. I bought 2 of the 12 volt 50 ah batteries about a month ago to run the Minn Kota Maxxum trolling motor on my boat. This TM is rated at pulling 42 amps on high, so that's getting close to the max these batteries can provide. Of course, I have them hooked in series to provide 24 volts. I have used the boat on 5 trips since installing them, and they have worked without issue. I usually run the TM on the lower speeds, but yesterday I went to a lake that is electric only and I had to make several long runs with the TM on high. Again, it worked without a problem. These batteries are about the same price as the cheapest lead acid marine batteries. The 2 of them together weigh about 25 pounds compared to 120 for the lead acids they replaced. Looks like a great buy at this point.

My mower went unused and unplugged for 2 years and all 4 batteries were dead. We ordered these after contemplating whether to spend so much on a mower that might not work after sitting so long. Hallelujah! It works like it did before it died! We're waiting for a longer bolt to arrive...these are about an inch taller than the original batteries. I'll let you know if there are any difficulties after we get back to mowing.

Still going strong after a busy mowing season inside a Ryobi riding electrical mower. A direct replacement for the old lead acid batteries.

My initial review was for 5 stars. The batteries were for replacement of the LA in my Ryobi rm300m. I purchased the eco-worthy charger at the same time. They worked great for about a month after full charge and install in the spring. Seemed to work for about 2 months. Then the mower would show charged, but would die immediately after starting mower blades. I was diagnosed and went through cancer treatments right after this started. I just became able to address the issue again, which put me a little over the 12 month fully warranty. I was hoping that Eco-worthy would do the right thing and either replace the 3 defective batteries that will not hold a charge, or refund my money in full so that I may purchase replacements. Currently they are trying to only give me less than 100%, which will not cover replacements, and I am at 13 months from purchase date, not received date. Edit 2: they agree to refund the 3 defective batteries and then told me these batteries are not compatible with the ryobi rm300e mower. I still await the refund. I also have a single battery that I cannot use in a year other item i own. Now I don't know where to go with this!

Bought qty 2 of the two pack of these batteries (4 total) to replace the OEM lead acid batteries in my Ryobi RM300e 30" electric riding mower which failed after 2 seasons. Electrically they are spec'd perfectly for this mower and weigh maybe half what the original lead acid battery pack weighs. However there are a few things to note: these batteries are slightly larger in all 3 dimensions (length, width, height) than the stock lead acid batteries, just enough that the original hold down bolt will not work. NOTE: If you're mechanically inclined, continue reading. If not, seek assistance from this point! Buy a 350mm M8 x 1.25 threaded rod and nuts/lock washers for this. Plus you will need to trim that threaded rod down to make it fit. In addition, this mower has 2 metal brackets in the center that need removed or beaten out of the way since they are JUST too far apart for these batteries to fit. But if they are not there or moved out of the way, these batteries will fit. If you get past this point, the next obstacle is the charging port. The stock Ryobi lead acid charger will simply charge forever and overheat. get a smart charger with a delta plug shape which costs about the same as one of these batteries. Then break the two plastic tabs in the stock ryobi charging port on the mower between the 3 circular terminals. They aren't connected to anything and just break off. Get to this point and these batteries in series are good for at least an acre connected in series to produce 48V and over an hour of operation. Recommendation: look up replacement ammeters as the stock Ryobi battery meter only shows battery voltage which will be constant on these batteries until they're dead due to the chemistry. A coulomb meter (showing amp hours remaining) will show actual remaining battery life with these.