So I bought my single above stated battery just before they released the w/heater and Bluetooth option. Does SOK sell the upgraded heating pad and bms for self install? If not what are some other good options? I'm currently using a 12v cig lighter heating pad which has been ok but not great since I have to remember to plug it in and turn it on (anticipating low temps late night, early am), plus it draws power when it's often not needed as I'm asleep and not monitoring. I've considered using one of those stick on silicone thin pads (used often for engine oil pan heater etc) and wire in some kind of thermostat to turn on/off as needed to maintain 32°F