- #12 volt battery monitor install#
- #12 volt battery monitor software#
- #12 volt battery monitor Bluetooth#
I sometimes leave my Honda Element sitting for a month or two, and the battery is able to crank the engine with no difficulty. The voltage certainly decays at a much faster rate than I am used to with my older cars. I don't think that explains the problem I had with a dead 12-volt battery in my previous post, because it had been sitting only a day or two that time. Presumably, the gradual decay in voltage is caused by some constant power drain even when the car is shut off. That spike did not trigger the charger to come on, but it did come on at 18:50 hours and stayed on for about thirty minutes. Also attached is a one-day image of August 10 showing that spike in closer detail. I don't know what caused the other negative spikes over the seven days. I noticed that spike as soon as I reconnected.
#12 volt battery monitor Bluetooth#
I think the fairly big negative spike indicated by the arrow on August 10 was when I noticed that I had disabled Bluetooth on my phone and had to reconnect. The 12-volt charger appears to activate when the battery decays below about 12.7 volts, but does not come on during brief negative spikes even below that value. The charger came on for the three short trips and came on several times during the next six days with no trips. The first image shows a seven-day period in which I made the same three short trips on day 1 and then left it parked for the next six days. I have not enabled this on my newer model for this very reason.Īlso suggest PM and see if you can add 12V between Ionic5 and battery in the thread title to avoid confusion with the HV pack (if it is too late to change it yourself)Ĭlick to expand.I have now run the BM2 for longer periods. I might add there have been numerous 12V battery failures associated with Bluelink services where the car will not go to sleep and thus interferes with the auto recharge cycle. Both models should be using the method described in this Hyundai patent
#12 volt battery monitor software#
I can't vision too much difference in the charging pattern between Ionic 5 and Kona EV, except if the software version is changed. It has been found that if the HV pack is less than 40% SOC, no charging of the 12V battery occurs as well. It would be easier to distinguish drive spikes from those automatic programed charge spikes( on Kona EV it recharges for about 20 minutes after a short drive, reoccur about 2 hours later- using newer LVDC software version: then settles into a 4 hour cycle similar to the original version), they also may occur when recharging the HV battery as well. Thanks for the above info, it might provide more details if the time range is set for 24 hour intervals. I'm still happy with the car in spite of the strange battery problem and the burning odor I still experience when I start it in the morning after it has sat for a few days.Ĭlick to expand.The 12V sag is the BMS reading the cell open circuit voltages. So far I have not seen a repetition of the battery going dead like it did in my original post. I have not taken any long trips, so I don't know whether the voltage would have stayed at about 14 volts or would have dropped back down. I'm not sure what the small negative spikes are. I think some, but not all, of the other spikes also represent trips.
It looks like each time I take a trip, the battery charges at a voltage of about 14.7 volts. The three periods indicated by the horizontal white lines represent three days when I made the same 3 short trips during the day. The voltage goes up to about 14.7 volts and then gradually decays down to about 12.7 volts. The image below shows the voltage over a 15 day period. My BM2 has been monitoring the battery for a couple of weeks now.
#12 volt battery monitor install#
On July 16 I posted a new thread on problems I had when the 12 volt battery died.Įlectriceddy suggested that I install a BM2 battery monitor and report back.
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