Tazer ESS Battery Testing

[jeepauug]

35 degrees out - cold battery, n1, n2 all at 12.5 EVIC is 14.6

Sponsored

 

[jeepauug]

One recollection I had when i had originally plugged in the Tzaer was a message that said "FAN ON" while i was flipping through the menus. The Fan did come on. Odd thing is there's no setting on the Tazer Lite that should have anything to do with the fan.

 

[WranglerMan]

I did not even think any fan messages were displayed in the EVIC so can’t even make a wild guess what that might be

 

[WranglerMan]

Here is my last day of testing voltages

Day 7

12.58 Main
12.58 N1
12.59 N2
12.61 ESS
13.2 EVIC


Was going pretty well after taking voltages but then I started the Jeep and the Uconnect radio seemed to be back lit so I let it sit while running and it rebooted twice before going to a normal screen, cannot say this is because of the Tazer as it’s done this at least a couple times since owning and I don’t have the 8.4 so it’s not OTA updates

After getting to where I was going I shut the Jeep down and let it sit till all dark then restarted and all seems normal, like I said it’s happened before but not for quite awhile

I have crunched the first set of numbers for the 7 days with it married but not plugged in and will try to get the rest done this evening but just glancing at the numbers it does not seem the Tazer I am running is causing any issues, my daily voltages ran in the 12.55-12.65 on both the main and ESS and EVIC displayed voltages were in the 13.0-13.3 range with an occasional spike to 13.8 but this happened with it plugged and and not plugged in and was only after it had been sitting all night or all day.

The only vehicle settings I used were tire size, tpms limits and fog light drop and the only live setting was disable ESS and when I had it disabled I tested it every way possible and had no issues what so ever so this evening I will post all my voltages to show you what I got.

This a.m I unmarried the Tazer and ran a few errands and after a few hours I did a quick check of voltage and all were the same with the Tazer removed and unmarried, Main was 12.60 ESS was 12.58 and EVIC was 13.4 so I married the Tazer back and put my battery on my charge and will spend the next month just letting it ride and see if I get and goofy readings or behavior

 

[WranglerMan]

Final numbers and after 14 days ( 7 with it not plugged in and 7 with ) I honestly can’t point the finger towards the Tazer, currently have it married and have my tire size and TPMS limits adjusted and then I unplugged it and will run a few months to see if any issues come up.

I’m not going to say 100% that there is not some type of issue that very slowly drains batteries but over the course of the past few weeks I have only had one issue and that was on day 14 where the Uconnect radio rebooted a few times during a startup but it’s happend before and I never had the Tazer so again no finger pointing, maybe possible issues are linked to a certain firmware or a combination of settings that the user picked or a conflict between the 8.4 system and the Tazer.

For now as I said my Tazer Jl with 11.06 is married and to my JL and I have 3 vehicle settings changed ( tire size, tpms and fog light drop ) and now it’s unplugged and we will see what happens and yes I have cables in my JL

Thanks for reading if any of you have kept up with this and have a great day

Battery Voltage Tests with Tazer JL
2018 Wrangler JLU Sahara
Standard battery and alternator
Tazer JL ( first model )
Firmware 11.06

At the beginning of each 7 day run a Deltran Battery Tender Plus was connected to JL until batteries were at 100%

First seven days Tazer JL was plugged in and married to JL then the below vehicle settings were changed and Tazer was removed but left married

Tire size
TPMS alarm limits
Fog light drop

Day 1
12.67 Main
12.67 N1
12.67 N2
12.6 EVIC

Day 2
12.63
12.63
12.63
13.0

Day 3
12.60
12.60
12.61
13.2

Day 4
12.60
12.59
12.59
13.2

Day 5
12.56
12.56
12.56
13.9
12.48 ( ESS battery added )

Day 6
12.66
12.66
12.66
13.3
12.64

Day 7
12.62
12.62
12.61
13.2
12.62

Averages
12.62 Main
12.62 N1
12.62 N2
13.1 EVIC
12.58 ESS

High Read-Low Read
12.67-12.56 Main
12.67-12.56 N1
12.67-12.56 N2
13.9-12.6 EVIC
12.64-12.48 ESS

Begin seven days with Tazer Jl plugged in, vehicle settings were left the same but live setting for ESS was set to disable ESS

Day 1
12.83 Main
12.83 N1
12.84 N2
12.7 EVIC
12.81 ESS

Day 2
12.66
12.67
12.67
13.0
12.67

Day 3
12.55
12.54
12.55
13.8
12.55

Day 4
12.55
12.57
12.58
13.4
12.58

Day 5
12.65
12.65
12.65
13.2
12.63

Day 6
12.58
12.59
12.59
13.0
12.60

Day 7
12.58
12.58
12.59
13.2
12.61

Averages
12.62 Main
12.63 N1
12.63 N2
13.1 EVIC
12.63 ESS

High Read-Low Read
12.83-12.55 Main
12.83-12.54 N1
12.84-12.55 N2
13.8-12.7 EVIC
12.81-12.55 ESS

 

[DanW]

I've had that back lit screen. I had to manually reboot for that one. It only happened once and the Tazer was off and unmarried, so I've chalked it up to a weird hiccup. I had to do a full battery disconnect to get it to stop.

 

[Swanny297]

I did not even think any fan messages were displayed in the EVIC so can’t even make a wild guess what that might be

Hey I don’t run a Tazer but have a trailcal that displays constant coltage (mirrors ecm).

I have been watching your thread and wanted to see what the voltage readings did on the trailcal with / without ESS.

I live in Louisiana so the mornings aren’t cold. Typical voltage in the morning is 13.3-13.5 and doesn’t change much through the day with ESS off. Yesterday I ran ESS all day and when the ESS was active the voltage dropped to 12.3-12.6 and took a while to get back up to ESS off levels which hover around 13.5. Again I am not measuring voltage just watching the trailcal.

 

[WranglerMan]

Well my Tazer is currently married back so I could change tire size, adjust my TPMS threshold limits and turn off fog light drop and then I unplugged it and after coming off my trickle charger my actual battery voltages were 12.6-12.8 measured with a meter and my displayed EVIC voltage was the same so off I go to run som errands and as I am driving about 35-45 my displayed EVIC is showing 12.7 and jumping between 12.6-12.8 and after a few stops letting ESS do it’s thing voltage is still running 12.7 but now when slowing down the voltage ramps up to over 14 and once stopped and not letting ESS engage it drops back to the 12.7.

The above behavior did the exact same thing after I got it back from the dealer after they replaced the main battery and I ran a month with no Tazer at all and after a few weeks the idle displayed voltage ran 12.8-13.5 and still walked up to over 14 when slowing down so after the month I married the Tazer back and it did the exact same thing and all worked perfectly

Here is a morning vid of my crazy rolling voltage that FCA techs say is normal

 

[CanAmMick]

Here is my last day of testing voltages

Day 7

12.58 Main
12.58 N1
12.59 N2
12.61 ESS
13.2 EVIC


Was going pretty well after taking voltages but then I started the Jeep and the Uconnect radio seemed to be back lit so I let it sit while running and it rebooted twice before going to a normal screen, cannot say this is because of the Tazer as it’s done this at least a couple times since owning and I don’t have the 8.4 so it’s not OTA updates

After getting to where I was going I shut the Jeep down and let it sit till all dark then restarted and all seems normal, like I said it’s happened before but not for quite awhile

I have crunched the first set of numbers for the 7 days with it married but not plugged in and will try to get the rest done this evening but just glancing at the numbers it does not seem the Tazer I am running is causing any issues, my daily voltages ran in the 12.55-12.65 on both the main and ESS and EVIC displayed voltages were in the 13.0-13.3 range with an occasional spike to 13.8 but this happened with it plugged and and not plugged in and was only after it had been sitting all night or all day.

The only vehicle settings I used were tire size, tpms limits and fog light drop and the only live setting was disable ESS and when I had it disabled I tested it every way possible and had no issues what so ever so this evening I will post all my voltages to show you what I got.

This a.m I unmarried the Tazer and ran a few errands and after a few hours I did a quick check of voltage and all were the same with the Tazer removed and unmarried, Main was 12.60 ESS was 12.58 and EVIC was 13.4 so I married the Tazer back and put my battery on my charge and will spend the next month just letting it ride and see if I get and goofy readings or behavior

I’m one that really appreciate all you’ve done! That’s a lot of work that you put in to get all of this info doing it with and without the Tazer. With all that has been said about the Tazer and that it may be causing issues, it looks to me like at least with 11.06 firmware and the setting you’ve used that it is not causing the battery issues that some may have thought. Who knows.

We’ve seen alot of post about battery voltage, battery problems, and the difference charging rate on these Jeeps. The charging rate is over the place. No one seems to really know what the actual charging rate should be.

I’ve never had any problems with my Jeep starting, but I’ve never seen my voltage go lower than 14.7-14.8 when it running. Usually when I’m driving my Jeep it’s at 14.8. Every once in awhile it will go down to 14.7, but that doesn’t last more than a few seconds. I’ve tried it with everything turned on in the Jeep and with everything turned off. It really doesn’t seem to matter.

Since my Jeep was going into the dealership to have some accessories installed, I asked them to check on the voltage. They called me back Friday and said it was too high. They still have it, and hopefully they’ll know something about what’s going on later this week. Just hope they don’t keep it a week, then tell me that it’s normal after telling me that it’s too high.

 

[jeepauug]

The day my battery drained - also coincided with the first successful UCONNECT health report (prior just said failed). I think UNCONNECT updates have something to do with the battery, not the Tazer. the unfortunate part is the proximity of the tazer install to dead battery didn't make me feel super confident.

 

[CanAmMick]

The day my battery drained - also coincided with he first successful UCONNECT health report (prior just said failed). I think UNCONNECT updates have something to do with the battery, not the Tazer. the unfortunate part is the proximity of the tazer install to dead battery didn't make me feel super confident.

I totally understand! Since these things are so new it’s going to take everyone some time before we get everything figured.

Sponsored