ECO-WORTHY 2 Pack 12V 30Ah LiFePO4 Lithium Battery for Mobility Scooter, Power Wheels, Wheel Chair, 3000+ Deep Cycle Rechargeable Battery

This review is for the 30Ah.The dimensions listed are wrong. The battery is about 0.3 inches taller than in the listing, and for me that almost busted the project. I planned to put these in IP67 boxes that I bought specifically for this project, and that dimension was critical. An inch bigger in either of the two other dimensions, no problem. But I only had 0.2 inches extra room in height, and this battery is at least 0.3 inches taller than it says in the description. I had to stand it off the bottom of the box and still it required me to squeeze it in. The weight listed is also wrong. Its not 7.2lbs. Its closer to 6.6lbs.As for the performance, I am satisfied so far. I have run 6 cycles through it for testing purposes. I estimate about 25Ah are available before the low voltage cuts off at around 10.6V. I know some people think its a fail unless you can get better than 95% of the rating capacity before the low voltage cutoff, but personally I am fine with 80% (24Ah in this case) or better. I am sure they can make this battery deliver 100%, but then it would be larger and heavier. Its physics, and it is what it is. I prefer they err on the smaller and lighter side for this particular project I had in mind. I ran my discharge tests using a 12V DC motor that is rated for 200W. I would get about 16A draw when the battery was near full. It would taper down to about 11A when the battery was near empty. That's pretty big current flow delta, but not unexpected. I recorded an average runtime of 2 hours and 10 minutes with this load. The easy math on that would indicate that 29Ah were discharged, but the reality is that the taper was not linear. The current flow drops from 16A pretty fast at beginning and settles around the 13A-13.5A range for a while and then slowly tapers to 11A. Based on these observations and the charger data, I think its around 25Ah of available capacity. These tests were down on both the batteries I received and they performed nearly identical.A word on chargers. I have been using Noco generation 1 chargers for many years. I have several sizes, including the G3500, G7200 and G15000, and use them for all my larger battery charging needs. I did not try with the G15000 because that one has a different lead adapter system and the alligator clips are huge. I did try with the G3500 and G7200. The G3500 gets confused and does not work beyond 1A charge rate. The G7200 works, but it takes around 9-10 hours to fully charge this battery. I don't like leaving larger capacity batteries charging overnight or while I am away, so I decided to get Eco-Worthy 10A chargers. Those charge the 30Ah batteries in about 3.5 hours +/- 5 minutes. The display reads it charges these at 8A, but my high end clamp meter says its closer to 7.5A. The easy math on that is roughly 26.25Ah. Long story short, make sure you get a charger that is more friendly with LiFePO4 batteries. At the charge/discharge rates I tested the batteries with, they barely got warm.Conclusion, I think these batteries are a good if you want something around 30AH in a smaller and lighter pack. There are not many choices for around this capacity and these dimensions and weight. Second, I think the price is fair for the actual capacity you get. I did not test all the "safety" features or other limitation features, such as high/low temperature cutoff, short circuit or over charge/discharge protection and so forth. I never plan to use this battery in freezing temps or near an active volcano. Use a circuit breaker and use appropriately sized loads and chargers and you'll be fine.

Been using these in a portable set up for a about a year now. They have been rock solid.I wanted better than the no name LiFEPO4 but not the high $$$ big name brands.The only thing I didn't like is the bolts were short when adding lots of wires and I had to get longer screws for it. I also prefer the larger bolts and built in wrench of their larger batteries, but since this is a smaller economy battery it is reasonable.Eco-Worthy has been solid and has continued to offer me good service on everything I have bought from them. Based on the gamble but good luck with this brand I have since bought a lot more from this brand and been very impressed with the value for the price.

My husband uses these for his paddle boards set up. He loves them.

More than the battery, the company, it's support - excellent. I questioned them prior to purchase and like what I was told - "if only they contacted us..."; there's always a solution.- I have to share that they, or at least "W" (their initial), assisted me with another product NOT their own.As well, I got it on a special price deal.I'm not saying, even in this, that they have all the answers - however - this one person stuck with me and while I worked out "stuff" on my end to "come up to speed" and with the other vendors (limited) input, then figured it out to "some degree" actually on my own (?) - but, I was able to "do that work" since had "W" to interact with me.I used to do "remote support" and was clear about who/what I was and did "write allot"... - but it was all good.FYI: as a personal integrity policy, typically the best I give as a rating for a good over all - is 4-stars if check that. So, 5-stars from me, with the above is the best I can do.If they remain *consistent (and of course, I'll get "smarter" too and won't need that much support?) - they will be a primary seller, at least for me and if keep in the proper Price range - competitive and on Amazon with all Amazon's good support here.All I can says, in summary is - you can get a bad battery from anyone, even them - but - if you have a little reasonable patience for "murphy's law" - this would be a great place to start considering many OEM's here seem to now have the QA and Support I experienced with these folks. They really stood out. And I have lots of reasons to be "frustrated" with stuff here :) - but, Amazon, is even then, still - hard to beat. So, like a 3-leg stool, the OEM, Amazon, the customer - all contribute to a good experience here.- I hope that helps someone!PS: the 3-sub-questions here behind the 5-Star? -- I can't speak to "longevity", but feel that if in an unreasonable time it fails and with *my interaction and honesty with them too - I just don't have to worry about it. I could be naive - but, I'm usually cautious, so, don't think so.

Lasted 14 months. I had them in constant use with a victron solar controller and one panel, running my internet modem in a weatherproof box. They died shortly after a cold week so chalking it up to freeze damage. The capacity is rather low and although I didn’t test them I’ve worked with enough lithium batteries to get a feel for amp hours and I don’t think these lived up to the rating after a year.