So, with all of this discussion, and with all of the warranty/BMS issues, if purchasing new batteries today, what brand would you purchase?
For non rack batteries here are the ones I have seen personally and people having success with:
Epoch is probably the company gaining the most market share a lot of users in the boat/marine are using there stuff now, Many people in Galveston bay area are using the roypow versions of there batteries. Keeping on its current trajectory I think this will be the biggest lithium battery vendor by 2025.
SOK is still overall good, recently people have had a few issues, but I know a lot of users happy with there stuff.
Sun fun kits batteries and kits is another one to look at they put them together in Louisiana so repairs are close, good value for the money and it has victron coms.
Millertech makes some solid batteries, although lacking in features like bluetooth and comms but a lot of boat / bass guys are happy with them
I haven't seen Voltgo in person but that is supposed to be a very good brand with built in comms
We use to see people using the Kilovault batteries a good bit but they are out of business now so its kind of shame.
Some honorable mentions:
Aolithium
Monster Marine
Lion Energy *When on sale at costco you can pick these up at a steal.
BattleBorn * yes I know, I know, but I have seen people that have 6 year old battle born batteries still going strong so not everyone is a dud.
Budget Brands that seem to have the least amount of problems:
Redodo
GoldenMate
As I general rule I avoid Amazon batteries like wieze, litime, chins, lossigy, powerqueen and the like I have seen too many issues and inconsistencies with these.