I bought into LiTime batteries ... had no problems buying vs building, trading money for time & labor. While sealed, batteries are well-packed, clean & simple, and installed in minutes. SOK has batteries that you can open up and repair, but for more money. So, with LiTime, Chins, etc., you'll need to be very careful about warranties and return process.
I'd suggest that you really look deep into their warranty and return processes, and their tech-support capability, plus forum horror stories (if any). US presence (shipping facility?), before you buy into a vendor's lineup.
Next, check each model for the amp-rating of the bms inside ... could be a more inexpensive 100-amp bms, vs a nicer 200-amp (or larger) bms. All my LiTimes have 200-amp bms's in them, so check the details.
A LiTime battery failed for me, with weird bms issues ... after some back & forth email with pics of the voltage errors, they swapped the battery out on their nickel, pre-paid UPS labels, nice shipping box (which I saved & used for the shipping out). They had california shipping center years back, and now have 3 across the USA, so that implies a good US presence.
Those LiTimes (they were AmpereTime when I bought them) have been running since 2021, and no signs of weakness, 2 cycles per day in our off-grid setup, 200ah coming off each cycle (power-hungry family). That's 700 cycles per year, so I'm already at the 2000 cycles mark, and we'll see how many more years I get off that original set of 2.
On a side note, I tend to take off points when the manufacturer/seller/whomever blatantly pastes their product image over "happy family" pics ... that's a degree of weak marketing that turns me off ... Chins lost a few points with their marketing pics.
Hope this helps ...
