Compact 12V 300Ah LiFePO4 Lithium Battery (310Ah), Small Size 6000+ Cycles 12V 300Ah Battery, Built-in 200A Low-Temp Protection BMS, Great for RV, Off-Grid, Home Energy Storage, Marine

I bought 3 of these to run a 3 parallel system for 300ah at 24v. My previous system is a dual 280ah 12v system.The size and weight of the battery makes it easy to handle. Big plus. 2 of the 3 seem to have a resting voltage of about 27.6 and one is closer to 27.1. This is a little bit concerning but maybe nothing to worry over. Also out of the 3 only one came with any paperwork, however all 3 were packaged identically and shipped from same location. This indicates quality control over whoever is actually preparing them to ship. Almost makes me want to tear all 3 open but we're going to pass and hope if there's a problem the company will respond.There really wasn't a lot of choices in the 24v that compared price wise to these. At the sale price they're barely over what a 12v 100ah is costing. It's all about longevity so only time will tell.I ran one from 100% down to the point the Renogy inverter began beeping and shut down. I got almost 92% efficiency which is remarkable and I couldn't be happier. A 2nd exact test on another battery yielded a little less but still between 91 and 92%.So in summary these are a solid buy. Easy to handle, compact, and produce the advertised AH. One of the two tests was done on the one battery out of 3 which has a lower resting voltage so that assuaged some of my concerns.

This battery is for my Hook Reveal 7ts fish finder on my kayak. . After using a different brand for similar battery (12V 7.5Ah) for a year and half, that battery would only last 3 hrs. Since it was 30 $ battery I told myself for 1.5 years that was ok and ordered another. The new battery was used twice and only lasted 1.25 hrs and then almost 2hrs. I fish 4-6 hrs, so I sent it back and began a search for similar battery that was same size as it has to fit in my kayak battery holder in the sealed hatch. I found this brand XYNZ and was happy to find the right size with more power 12.8 V 12Ah and consistent reviews and for only a few dollars more.It arrived a lot early then originally schedule (Yeah). Was packaged very well and came with a nice little manual. I followed the instructions and charged it up. Took it out to fish and it lasted around 4 hrs without any problems. So I didn’t charge it to see how long it would last and took it out on day 2 and it lasted another 4 hrs. So I took it out on day 3 and fished 5 hrs without any problems. At this time my friend was here and used his tool and it was 11.8V. So I put it on charge. My friend also helped me to set up the voltage to display on my fish finder so that I know when it gets to 12V and can charge it up when it reaches that amount.I will follow up if I have any problems and also will follow up in 1-2 years to let you know if it’s still going strong. My other battery should have lasted a lot longer than 1.5 years!This company sounds good and has a 3 yr replacement on it.

About 6 months ago (Nov 2024), I purchased 2 of these for a small standing scooter. They were the 10A BMS model. They worked perfectly in the scooter, and I performed a test in my UPS and they seemed to work fine at the load I had them at (~230W/9.5A), so I planned to purchase more for two UPSs I need to replace the AGM batteries for.I come to find they've since upgraded this to 20A BMS, works for me, I bought 4.What actually arrived was not what I expected though. Two of them were the 20A model, and two were the older 10A model. There's no actual markings on the battery themselves that I saw which would indicate the BMS size, so I referenced the spec sheet on the included user manual.I ended up exchanging the 10A ones, and the replacements that arrived were also the 20A BMS I expected.They are now installed in two APC UPSs (1000VA and 1500VA) and work fine. The load on them is about ~250W each, so the current draw should be well within the BMS tolerance.I haven't tested the actual runtime with these yet, but I don't expect worse runtime than with the AGM ones.Anyway, I recommend these batteries as safe alternatives to AGM: They are lighter, and aren't fire-prone like other Lithium technologies; however double check the BMS rating in the manual when you get them, to confirm they're the 20A BMS, assuming you need that size.

These are some incredible batteries! Size of a smaller battery the power of a full size battery. The one thing about this brand is the customer service is phenomenal! I naught 4 smaller batteries from them and was charging them up for the first time and one was bad they had them replaced within three days! I have a preferred LiFePO4 maker and it’s and your looking at!

Have had them connected to an inverter for 3 month now. They seem to be working fine. I am 99% off grid, using three separate sets of battery banks. four 225 ah 12v Lead acid, sixteen 100 ah 12v lithium, and eight 100 ah 24v lithium. Each bank using their own solar chargers and inverters for different circuits on my property. None of these banks are being used to the extreme, only 15% from full so they should last a long time. Summer is just around the corner and I will exercise them during the evening by running the air conditioner for an hour after sunset. I am building two cement bunkers 50 ft from the house for the lithium batteries.; fire is my concern.

These batteries are beasts. I originally purchased 2-100ah batteries before I found these. They are the same physical size as the 100ah ones, but are 3x the capacity. BMS system protects against over/under voltage, over/under current and over/under temperature.That being said, I still installed BOJACK MRBF terminal Fuse Block 200 AMP fuses on the positive terminal. The BMS will prevent over current draws, but this protects an attack from the other two batteries (yes, I bought 3 of these) that are wired in parallel. The fuse will blow if there is any attempt to backfeed into it.My only gripe is I wish there was bluetooth connectivity to the BMS so I could monitor the individual cells. I did install a Renogy Shunt that will monitor the battery system as a whole, but would've preferred to see the individual battery performance.For the price, these things are amazing.