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My 2017 Kia battery never shows over 1 bar above the half mark as charged. Should it ever read 100%?


Thanks................ Rod
 

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I had it up to 100% indicated only once after a long steep downhill at 25 mph on cruise control. Otherwise in 20,000 miles, I've never seen it that high. The other circumstance where it seems to charge high (over 3/4) is when it is raining. High load on the car, but not really a need for added battery torque like going up a hill. So the engine stays on for a longer period, the engine is charging, but no battery juice is added. When not raining, the exact same terrain will put the car in EV, which keeps the battery about half full.

There isn't any particular benefit in having the battery charged to 100% indicated. In fact, battery life will be highest with the exact same algorithm that the engineers used - keep it at about half full.
 

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The battery management sysem on the Hybrid tries to hold the battery around the 50% mark. I am going to take it that you don't live in a cold climate, as the engine has to run to get heat inside the car. This will tend to charge the battery much higher as the power from the running engine will regenerative charge the battery pack with the excess power not going to the wheels. Likely you have missed the bar getting much above the 1/2 way mark but I will speculate that it does happen.
 

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The Niro Battery Management Software (BMS) is designed to allow for movement from 40%-60% State of Charge (SOC) only for 17-19 HEV Niros during normal driving. In spirited driving, or at high speed, you may see greater range of movement. You should avoid extended, high speed driving at speeds over 80 MPH because you may over discharge the battery.
 

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The BMS is not going to allow you to discharge the battery so far that it will damage it. Nor overcharge it for that matter - regen turns off at that point. The dash display does not show the capacity reserve at the top or bottom.
 

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The BMS is not going to allow you to discharge the battery so far that it will damage it. Nor overcharge it for that matter - regen turns off at that point. The dash display does not show the capacity reserve at the top or bottom.
The SA360 service action was done because a small subset of Niro drivers on long road trips, at high speeds, 85+mph for more that 5 hours continuously, were able to overdischarge the battery. The ECU Freeze Frame and BMS were updated to be more active and prevent that from occurring.
 

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The BMS is not going to allow you to discharge the battery so far that it will damage it. Nor overcharge it for that matter - regen turns off at that point. The dash display does not show the capacity reserve at the top or bottom.

Can verify that it won't let you overcharge it. In the rare (or not rare, in the case of the plug-in models) event that the battery actually reaches full charge, regen braking gets replaced with engine braking. When you moderately use the brakes with a full battery charge, you'll actually hear/feel the ICE turn on and get used for slowing the car down, instead of the electric motor (regen). So it's impossible to overcharge it.


Likewise, it's impossible to drain it completely. Once the battery drops below a certain level (20% or so), the car stops using the electric motor altogether until it regains enough charge to start using it again. This even applies to when you mash the gas pedal when your battery is at or below 20%, you'll notice the acceleration at full-throttle suffers significantly because the car will only be using the gas engine at that point. This is something that's actually happened to me a lot, on long highway drives up into the mountains, the car loses a significant amount of its ability to accelerate once the battery is low.
 

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Limp mode, when you run out of gas and are now just using battery power at a reduced speed, can apparently get you into dangerous territory. Every time I get low on gas, a warning pops up saying I am risking battery damage if I don't fill up. My suspicion is that a single deep discharge may not damage your battery, but of course it is not good to drop to zero or up to 100% for long life. The more it happens, the lower the battery life. The hidden capacity at the top and bottom will obscure this from the owner for a very long time.
 

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Can verify that it won't let you overcharge it. In the rare (or not rare, in the case of the plug-in models) event that the battery actually reaches full charge, regen braking gets replaced with engine braking. When you moderately use the brakes with a full battery charge, you'll actually hear/feel the ICE turn on and get used for slowing the car down, instead of the electric motor (regen). So it's impossible to overcharge it.
I was wondering why my engine was firing up when leaving home and immediately going down hill with brakes on all the way down. However, this morning I disabled the HVAC before I pulled out of the garage, and the engine never fired up going down the same hill. I could believe the engine braking reason, as the engine would rev quite high, but unless this morning was an anomaly and tomorrow it starts (I'll do the same with the HVAC tomorrow), I'll have to say that it doesn't appear to be accurate.
 

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What do you mean by having brakes on all the way down? The disk brakes? Or regen? What is the charge indicator doing? What is the displayed SOC?
 

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What do you mean by having brakes on all the way down? The disk brakes? Or regen? What is the charge indicator doing? What is the displayed SOC?

The quote I am sure was saying that he normally drove in EV mode and had the brake pedal pressed (likely just to somewhat slow down the Niro) all the way down the hill. As he would have a full battery charge since he just started the trip and driving in EV mode, the engine would have turned on and then used it's own resistance to slow the car down, rather than using the regenerative braking of the electric motor, or the brake pads on the wheels. At the bottom of the hill the engine would have turned off and he continues in EV mode. However this time, he didn't put the Niro into EV mode and for some reason the engine didn't turn on.


But that is just the way that I am reading the thread post.
 

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The SA360 service action was done because a small subset of Niro drivers on long road trips, at high speeds, 85+mph for more that 5 hours continuously, were able to overdischarge the battery. The ECU Freeze Frame and BMS were updated to be more active and prevent that from occurring.

If you turn off EV on long trips does this prevent it from happening? I drive 1000 miles to my moms several times a year and posted speeds are 75. If you don't do 85 you annoy everyone.
 

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Beth I would not worry about this. I have a 2019 Niro but traded in a 2008 Prius on this vehicle. The Prius as you know is a hybrid and continually discharges and charges the battery pack while you are driving. I have driven the Prius for extended speeds of over 85 while out west where the speed limit is 80. In the 11 years we owned the 2008 Prius (we bought it new) we drove the bejabbers out of it. Stop and go, city driving, expressway driving, long trips, short trips you name it we did it. The vehicle and battery pack had over 150,000 miles on it.

After 150,000 miles, 11 years and countless charge and discharge cycles we had -0- problems with the battery, battery management system or the hybrid system. The car still averaged over 52 mpg. Prius and hybrid technology like the Niro uses are decades old. Toyota now has a hybrid vehicle in almost every line they make.

With the battery management systems in these vehicles people can just drive them and enjoy them without having to constantly worry about it.

We have a 2019 Niro Plug in and I plug it in every single chance I get regardless of the state of charge of the battery. The battery management system will take care of it.

In April before we bought the Niro I paid $270 dollars for gas. We do a lot of driving. In May when we bought the Niro I bought $161 of gas and installed a level 2 charger in the middle of the month. So far in June we have spent $0 in gas and still have a full tank. I do not expect to spend any money on gas unless we drive our 12 year old van.
 

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The SA360 service action was done because a small subset of Niro drivers on long road trips, at high speeds, 85+mph for more that 5 hours continuously, were able to overdischarge the battery. The ECU Freeze Frame and BMS were updated to be more active and prevent that from occurring.

If you turn off EV on long trips does this prevent it from happening? I drive 1000 miles to my moms several times a year and posted speeds are 75. If you don't do 85 you annoy everyone.
Beth I would not worry about this. I have a 2019 Niro but traded in a 2008 Prius on this vehicle. The Prius as you know is a hybrid and continually discharges and charges the battery pack while you are driving. I have driven the Prius for extended speeds of over 85 while out west where the speed limit is 80. In the 11 years we owned the 2008 Prius (we bought it new) we drove the bejabbers out of it. Stop and go, city driving, expressway driving, long trips, short trips you name it we did it. The vehicle and battery pack had over 150,000 miles on it.

After 150,000 miles, 11 years and countless charge and discharge cycles we had -0- problems with the battery, battery management system or the hybrid system. The car still averaged over 52 mpg. Prius and hybrid technology like the Niro uses are decades old. Toyota now has a hybrid vehicle in almost every line they make.

With the battery management systems in these vehicles people can just drive them and enjoy them without having to constantly worry about it.

We have a 2019 Niro Plug in and I plug it in every single chance I get regardless of the state of charge of the battery. The battery management system will take care of it.

In April before we bought the Niro I paid $270 dollars for gas. We do a lot of driving. In May when we bought the Niro I bought $161 of gas and installed a level 2 charger in the middle of the month. So far in June we have spent $0 in gas and still have a full tank. I do not expect to spend any money on gas unless we drive our 12 year old van.
Beth, the original concern for service action 360 was addressed by it, so it's not an issue. It was a specific concern affecting a very small number of users.

John, congrats! I haven't put gas in since April 23rd, and before that not since February 23. I online allow the gas to sit for a maximum of two months before I take a road trip and use it all up to about having to use fuel stabilizer. That and I like road trips with my fiancée.
 

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Just a FYI. If I were an owner of a PHEV I'd run the tank out at least twice a year. Gas does get stale and old gas eventually turns into a varnishy smelling gum. I'd run in out to coincide with the change of the seasons.
I just bought an '18 EX leftover this January. Ran the tank down and put a bottle of techron and kept refilling with premium. June 1st is the first tankful of regular I've put in. Love my Niro!
 

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Just a FYI. If I were an owner of a PHEV I'd run the tank out at least twice a year. Gas does get stale and old gas eventually turns into a varnishy smelling gum. I'd run in out to coincide with the change of the seasons.
I just bought an '18 EX leftover this January. Ran the tank down and put a bottle of techron and kept refilling with premium. June 1st is the first tankful of regular I've put in. Love my Niro!
Refilling with premium provides no benefit. Any Tier One fuel will contain the necessary fuel stabilizers to keep the fuel in good shape. The only difference with premium fuel is the octane rating, which only makes a difference in the ability of the engine to avoid pre-ignition (knocking). It isn't a "better" fuel, and only benefits the oil company when you pay the higher price.

https://www.toptiergas.com/licensed-brands/
 

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Refilling with premium provides no benefit. Any Tier One fuel will contain the necessary fuel stabilizers to keep the fuel in good shape. The only difference with premium fuel is the octane rating, which only makes a difference in the ability of the engine to avoid pre-ignition (knocking). It isn't a "better" fuel, and only benefits the oil company when you pay the higher price.

https://www.toptiergas.com/licensed-brands/

Soo, what do you do to prevent the GDI carbon depot in the cylinders ?

What king of fuel stabilizer.do you use!?


With my old Rio5, i had alway's made a 1 time Premium 94 octane for each 6 regular full up. had the car for nearly 6 years, 60.000 miles and never had the "depot" problem. Got some contacts that had the "depot" problem with GDI fuel systm with their Kia's, and had to make them cleaning at a big cost at the dealer. Did my shoot of the premium gaz helped ?.. i do not know!
 

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I don't use any additives. Now that I'm driving a PHEV, I will reevaluate that as I determine how often I fill the gas tank. If I buy gas once a month, I see no need to add anything additional. If it stretches into two months, then I might consider something. But there's no additives in the premium grade of gas that isn't in the regular grade from the same supplier. If I buy gas from Shell or Chevron, they both contain any additives or stabilizers needed from my geographic area.

My GTI had a deposit problem, and we put premium in that engine all the time. Didn't help that engine one bit. But it's your car and your money. Spend as you wish. :D
 

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I don't use any additives. Now that I'm driving a PHEV, I will reevaluate that as I determine how often I fill the gas tank. If I buy gas once a month, I see no need to add anything additional. If it stretches into two months, then I might consider something. But there's no additives in the premium grade of gas that isn't in the regular grade from the same supplier. If I buy gas from Shell or Chevron, they both contain any additives or stabilizers needed from my geographic area.

My GTI had a deposit problem, and we put premium in that engine all the time. Didn't help that engine one bit. But it's your car and your money. Spend as you wish. :D
I so put Shell since 1987 on all my cars!... so were ok for that... It's not one fill up that can last 2-3-4 months that will give you "THE" GDI depot problem, it's a long term use of "no good gas" that causes this.



What did you do with your deposit problem on your GTI?
 

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I so put Shell since 1987 on all my cars!... so were ok for that... It's not one fill up that can last 2-3-4 months that will give you "THE" GDI depot problem, it's a long term use of "no good gas" that causes this.



What did you do with your deposit problem on your GTI?
It is a Certified Pre-owned, so VW paid for it. $50 deductible was all I had to pay. :D
 
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