Installing an inexpensive 12V battery monitor

I've reinstalled the Century unit in my ICE and will see what happens with the app seeing 2 devices. I only just noticed (duh!) I can rename the BM2s to clarify which car they're attached to, a whole lot easier than guessing. It's interesting that it's labeled "Historical device list, view historical data only". That's hysterical...

My Kona is nearly 3 years old now and the 12V battery is still going strong, even in the colder weather we're having.

 

Since 12V batteries are part of the current conversation, I've noticed that the standby 12V charging schedule is also thwarted by leaving the hood open. In these voltage logs the car was on the long-term daily charge schedule before being driven up on ramps at 1600 on the 9th. The hood was opened at 1730 and left ajar until 1520 the next day.

Not only did the schedule fail at the next daily scheduled event, 0430 on the 10th, but then it checked every 4 hours and failed to charge each time.

A hour after being driven off the ramps with the hood closed at 1520 on the 10th it commenced two 20-min charge events. Why two? It can only be because the data downloaded off the IBS sensor (on the negative terminal) indicated that it was required. The BMS's 12V management seems to have no other way to judge the battery's condition other than that sensor.

After the two charge events on the 11th it skipped the next one at 2000 but commenced after that on a regular 4-hour schedule on the 11th.

 

It seems that way. But my battery is still as happy as a clam and neither myself or the dealer has managed to kill it. Perhaps due to not having any telematics.

I dropped by my local HB Peugeot dealer today with my Kona and checked out the new 208e EV. It's just like a smaller Kona but with 100kW motor, 50 kWh battery and heat pump. It doesn't appear to be any "better" but they seem to be selling well, perhaps because of our subsidy. The next deliveries are well into 2022.