I would recommend you look at the SOK 280 battery which has free shipping and is heated 280:
https://www.us.sokbattery.com/product-page/12v-280ah-lithium-battery-built-in-heater-and-bluetooth they are $1000.00 with free shipping
There are some advantages:
1) Its is fully serviceable including getting to the cells and pulling them out, epoch and BB are welded you can not service them. BB you can't even open the lid
2) They are not parallel cells, both BB and Epoch use multiple cells that show up as 1 cell. So in there 460 battery its using 8x of the EVE 230 but you view them as 4. I don't like this because if 1 of the cells is bad I would not know which out of the 2 it is.
Only disadvantage to the SOK is its metal and will probably rust and is probably pretty bad at keeping the heating.
Me personally I would do neither and get the V5 sun fun kit:
https://www.sunfunkits.com/product/...eluxe-heated-smart-lfp-battery-kit-200amp-bms
Main reasons for it are:
1) The most serviceable out of all including options to change to a different bms, changing cells is easy, basically anything can be swapped out.
2) Has an active balancer, and you can set to run only when the battery is about to be full.
3) The only battery that can keep the battery warm even when its not charging, most of these other batteries the heater only works when you are charging, with the sfk you can press the heater button and it will keep the battery warm regardless. It does the same auto warm the battery if attempting to charge in cold weather like other heated batteries do as well so 2 ways to keep batteries warm.
4) It uses a JBD bms not proprietary so there are plenty of third party support for it including victron with the cerbo, solar assitant, and a lot of other stuff. The bluetooth can be turned off, its important because bluetooth batteries can be potentially hacked.
5) They put it together in the USA and have good support, but with the kit you do most of the assembly so you can know your battery inside and out and fix things.
I generally don't trust warranties with batteries due to bad experience with both Surret Rolls & Battle Born. Surret Rolls eventually did the right thing once my lawyer got involved but battle born did nothing blamed me and gave me the run around; the long story of that is I ended up with a BB100 with a busted up lid as I had to change their bms to a 100AH bms from overkill solar to get that battery to work again.
I would suggest you not rush into this and instead of buying all the batteries buy 1 to try out before buying others.
www.currentconnected.com
