Tickle or trickle

ktnez99

Zorg Guru (IV)
British Zeds
Joined
May 18, 2018
Points
164
Location
West Midlands
Model of Z
Z3 2.8L
No, it’s not the witching time of year!
It’s my car. It’s parked up and not being driven. Does it need a trickle charger on it and yes, I’d much rather be tickling the fun out of my car with endless driving.
 

PYX

Dedicated Member
British Zeds
Joined
Jul 24, 2018
Points
40
Location
Leeds West Yorkshire
Model of Z
Z3M Roadster S50B32
Personally I'd be trickling, you can pick them up quite reasonably. Then at least when you do want to tickle it, it will start without replacing the battery.
 

Pond

Zorg Guru (III)
British Zeds
Joined
Dec 26, 2016
Points
144
Location
Spaldingski, Lincs
Model of Z
3 litre Z3 pretending to be Italian exotica. Two previous E89 Z4s.
Trickle (or maintenance/ smart/ intelligent) chargers are a God send IME.

I would advise buying a decent one, though. cTek or NOCO make very good intelligent maintenance chargers for around £70.

Cheapo ones, from Screwfix or Amazon/ eBay, etc do not look after a battery as well as the more sophisticated ones.

I have a cheap 2 amp (£25) one and a cTek MXS5 (5 amp). The cTek is much better IME.
 

Nodzed

Zorg Expert (II)
Supporter
British Zeds
M Power
Joined
Feb 18, 2016
Points
231
Location
Forest of Dean, Gloucestershire, England
Model of Z
Z3M Imola and Z4 (e89)
Both mine have a Ctec connected. As said I would get a decent one.
 

ktnez99

Zorg Guru (IV)
British Zeds
Joined
May 18, 2018
Points
164
Location
West Midlands
Model of Z
Z3 2.8L
Thank you everyone. I shall look for a Ctec trickle charger. I’m assuming this then needs connecting to my car all the time: am I right?
 
Last edited:

Pond

Zorg Guru (III)
British Zeds
Joined
Dec 26, 2016
Points
144
Location
Spaldingski, Lincs
Model of Z
3 litre Z3 pretending to be Italian exotica. Two previous E89 Z4s.
Thank you everyone. I shall look for a Ctec trickle charger. I’m assuming this then needs connecting to my car all the time: am I right?
No. It doesn't NEED connecting permanently but CAN be.
I personally don't like to have a charger (cos even the intelligent/ maintenance ones are just chargers) connected to the car all the time....just in case!
I use mine to top-up the charge about once a week. Once all the lights come on to say it is fully charged I disconnect it. Some leave them connected all the time. Personal preference.

If your battery doesn't have a breather pipe connected (or even if it does), it is a good idea to leave the boot open when a charger is connected, if you can. Batteries produce hydrogen (albeit in tiny amounts) when charging, which is extremely explosive. Highly unlikely it could be a problem, just a sensible precaution IMO.
 

Gatsoburner

Zorg Addict
British Zeds
Joined
Dec 16, 2025
Points
53
Location
North West of UK
Model of Z
3.0i
I use a dash mounted solar panel plugged into the OBD port when its out on the drive. Battery is already good so not sure if it actually works well or not.
Obvs bobbins for winter but garaged with mains charger.
 

Pond

Zorg Guru (III)
British Zeds
Joined
Dec 26, 2016
Points
144
Location
Spaldingski, Lincs
Model of Z
3 litre Z3 pretending to be Italian exotica. Two previous E89 Z4s.
I use a dash mounted solar panel plugged into the OBD port when its out on the drive. Battery is already good so not sure if it actually works well or not.
Obvs bobbins for winter but garaged with mains charger.
I thought that BMW only recommend batteries to be 'charged' via the connections in the engine bay.
Something to do with potentially damaging the sensitive electronic modules?

My info may not be relevant to the Z3 platform, but I know it is the case for later Z4s.
 

petecossie

Zorg Guru (IV)
British Zeds
M Power
Joined
Dec 7, 2011
Points
158
Location
Teesside
Model of Z
Z3 M Coupe
I have the Ctek 5 and use every couple of months if the Coupe hasn't been used much and leave it on till it has completed it full recharge cycle usually under 24hrs.
 
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