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Trickle charging a Niro hybrid?

Posted: Tue Mar 31, 2020 10:21 am
by niro tyro
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?

Re: Trickle charging a Niro hybrid?

Posted: Tue Mar 31, 2020 10:25 am
by Gerd_NL
Let it stay on 50%.

Re: Trickle charging a Niro hybrid?

Posted: Thu Apr 02, 2020 2:20 pm
by Sid_Bonkers
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.

Re: Trickle charging a Niro hybrid?

Posted: Tue Apr 14, 2020 6:00 am
by BrianB
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

Re: Trickle charging a Niro hybrid?

Posted: Tue Apr 14, 2020 12:42 pm
by Gerd_NL
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 ...

Re: Trickle charging a Niro hybrid?

Posted: Tue Apr 14, 2020 3:30 pm
by AlanW55
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.

Re: Trickle charging a Niro hybrid?

Posted: Sat May 09, 2020 9:02 pm
by Steve
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 .

Re: Trickle charging a Niro hybrid?

Posted: Sat May 09, 2020 10:28 pm
by deguy
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.