For 20 bucks more (229) they offer the Bluetooth version of this battery, which I assume takes care of the monitoring, but then I think you have to use their charger. throw another 30 bucks, and now you get same 100 ah, with Bluetooth monitoring, in ‘mini’ size. I might have to buy one of these….
I hate it when that happens. I bought a new Texas Instruments scientific calculator back in '76 or so. The next freakin' day, my buddy got one much cheaper. He still razzes me over itThey came out with the bluetooth version the week after I bought it.