Trickle charging a Niro hybrid?

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niro tyro
Posts: 6
Joined: Thu Oct 18, 2018 3:05 pm

Post by niro tyro » Tue Mar 31, 2020 10:21 am

My Niro hybrid - not PHEV - will be in the garage for the next three months. Anybody figured out a way of trickle-charging the 12-volt battery?

Gerd_NL
Posts: 25
Joined: Sat Feb 08, 2020 9:32 pm

Post by Gerd_NL » Tue Mar 31, 2020 10:25 am

Let it stay on 50%.
Regards
Gerd
(Niro HEV, MY 2020, DL, Wheels 16", Graphite Platinum,UVO)

Sid_Bonkers
Posts: 13
Joined: Wed Dec 04, 2019 11:53 am

Post by Sid_Bonkers » Thu Apr 02, 2020 2:20 pm

Ive not used my car for a fortnight (self isolating) and the battery is still showing 50% :)

But if it should lose its charge the cars system should shut the battery down before it goes completely flat and you should then be able to restart it by pressing the "Reset 12v Battery" button.

BrianB
Posts: 1
Joined: Tue Apr 14, 2020 5:44 am

Post by BrianB » Tue Apr 14, 2020 6:00 am

I’ve trickle charged my flat Niro hybrid 12 volt battery overnight.
1. Where do I find the battery reset button?
2. Do any of the cars systems need resetting

Gerd_NL
Posts: 25
Joined: Sat Feb 08, 2020 9:32 pm

Post by Gerd_NL » Tue Apr 14, 2020 12:42 pm

Hi,
if you have a battery reset button or not depends on you model year. In Niros with a battery reset button is the 12v-battery build-in the housing of the hv-battery, not accessible by you.
My Niro do not has this button, for reasons the battery has no power, I have a jump-starter-set.
The 12v-battery is loaded by the hv-battery during use of the Niro (running motor).
To keep some functions as burglar-alarm working, some power from the 12v-battery is needed also if the car is not used, over days this can flatten the 12v-battery.
To avoid this it is recommended to let the motor running for some minutes over some days, may be all three days ...
Regards
Gerd
(Niro HEV, MY 2020, DL, Wheels 16", Graphite Platinum,UVO)

AlanW55
Posts: 192
Joined: Sat Mar 11, 2017 4:31 pm

Post by AlanW55 » Tue Apr 14, 2020 3:30 pm

BrianB wrote:
Tue Apr 14, 2020 6:00 am
I’ve trickle charged my flat Niro hybrid 12 volt battery overnight.
1. Where do I find the battery reset button?
2. Do any of the cars systems need resetting
Presumably you have an early model Niro where the 12V battery is in the boot. Did you connect your charging leads direct to the battery, or did you use the charging terminal and earth point under the bonnet? I'm thinking of charging mine but am unsure as to the safe procedure.
1. There is no reset button on early models.
2. You should only have to reset things if the battery is disconnected.
UK 2021 HEV 4 in silky silver, standard spec.
previously UK 2017 First Edition HEV in pearlescent white, standard spec.

Steve
Posts: 91
Joined: Thu Apr 13, 2017 3:16 pm
Location: Staffordshire

Post by Steve » Sat May 09, 2020 9:02 pm

If your going to charge the 12v battery thats in the boot ... DISCONNECT THE BATTERY FROM THE CAR FIRST .... Never put a 12v charger on a battery thats connected to the car ,or it could and probably would do some damage to the electrics .
Steve
Niro 2 in Black . LED headlight conversion .
Previous car.... Ford Kuga 163 . 2011

deguy
Posts: 93
Joined: Tue Jan 31, 2017 8:54 pm
Location: Expat in Munich

Post by deguy » Sat May 09, 2020 10:28 pm

I've only been driving to the shops once a week for the last month or so, and on Wednesday the car wouldn't start. First it told me to use the key to push against the stop-start button. When I did that the system check started as normal, but then it said "Stop immediately! Check brakes". Leaving aside the fact I wasn't moving as I couldn't start the car, all I could do was switch off.

I noticed that the mirrors were going in and out slowly as I walked around the car, so I used a Powerbank Car Starter connected to the 12v battery terminals and then it was fine, so I went for a motorway drive to charge it up a bit. The hybrid battery was already normally charged in the 50-75% range when the car started. Of course that may be different for later models that don't have a 12v battery.

It was actually due for service and MOT on Friday anyway and the dealer confirmed this was normal behaviour if the 12v battery is low. Still think the error message could be better.
Niro Spirit 2017 HEV in Ocean Blue (German spec similar to First Edition without ADAP)
Previously: Mercedes B-Class 200CDI Autotronic

prginocx
Posts: 1
Joined: Thu Apr 08, 2021 4:03 am

Post by prginocx » Thu Apr 08, 2021 4:42 am

Quote " Never put a 12v charger on a battery thats connected to the car ,or it could and probably would do some damage to the electrics ."

I don't know why this should be...Cars charge their own battery when they are running all the time, and battery voltage varies quite a bit. Putting a charger on, unless it is some old fashioned non-regulated charger, shouldn't do any harm. Any charger less than 15 years old has a good regulator on it, and won't push the battery voltage higher than 13.5v or so...There are no systems in any car that won't tolerate a little over voltage like that...when the car is running and charging the battery, you have way more overvoltage when you switch on systems that have large current draw, like headlights and such.

Now if you hook up a 48V / 36V / 24V charger on a 12V battery....that is a problem. Our world does require a baseline of intelligence. 24V chargers/batteries in boats are fairly common in USA, in fact most 24V chargers have built in protection to notify the idiot when they've tried to charge a 12V battery..

It is a good idea to be aware that many batteries, including some "sealed" ones, generate H2 when charging. Usually small amounts, and any ventilated area would be fine, but an FYI. :D

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