Optimate or C-Tek car battery charger?

Foxhound5366

Executive Member
Joined
Oct 23, 2014
Messages
9,131
I'm a simple guy. I connect this up and it charges the battery. When it's done I pack it away although I guess I could leave it connected.
Be careful ... battery over-charging is a thing. That’s why the expensive chargers are expensive ... all the safety and monitoring tech.
 

GMAN03

Senior Member
Joined
Oct 16, 2011
Messages
501
Had an Optimate1 from when I still had a bike and been very useful now keeping my car battery topped up. I drive so little now and when I do, I doubt it's long enough to recharge the battery so very happy to have it.
 

Foxhound5366

Executive Member
Joined
Oct 23, 2014
Messages
9,131
If you have a tracker and it’s hardwired, it will be the culprit.
Well if you read the whole post, you'll see the tracking company sent a technician who spent an hour with the car, monitoring the voltage across the unit itself and across the battery, and he claimed that it was drawing even less than specification. *shrugs* He said it happens quite frequently that OEM workshops call him in to check out cars where they suspect it's the tracker, only for him to prove to the workshop that it's something else in the car. Who am I to argue? They both took a stab at it, now I'll just hope the charger fixes the issue until I get to drive daily again.
 

johnjm

Expert Member
Joined
Jul 26, 2005
Messages
2,541
Well if you read the whole post, you'll see the tracking company sent a technician who spent an hour with the car, monitoring the voltage across the unit itself and across the battery, and he claimed that it was drawing even less than specification. *shrugs* He said it happens quite frequently that OEM workshops call him in to check out cars where they suspect it's the tracker, only for him to prove to the workshop that it's something else in the car. Who am I to argue? They both took a stab at it, now I'll just hope the charger fixes the issue until I get to drive daily again.

That’s what they told me a decade ago. I then had it removed, and no more issues.

“Technicians”... yeah...

If the battery is very old it’s worthwhile getting a new one though, but I’d put money on it being the tracker. Haven’t had a tracker since 2010 as I don’t like anything hardwired into a car, Africa style.
 

Smugs

Expert Member
Joined
Dec 16, 2017
Messages
2,892
I had an Optimate go bad on me just out of warrantee, can't be fixed so I went for one of these..


Use it on my bikes too..
 

Foxhound5366

Executive Member
Joined
Oct 23, 2014
Messages
9,131
I had an Optimate go bad on me just out of warrantee, can't be fixed so I went for one of these..


Use it on my bikes too..
What the hell, that looks like a ruggedized C-Tek charger. Did the Chinese get creative and just rip it off?
 

Smugs

Expert Member
Joined
Dec 16, 2017
Messages
2,892
What the hell, that looks like a ruggedized C-Tek charger. Did the Chinese get creative and just rip it off?
As far I see National Luna is local..

 

Geoff.D

Honorary Master
Joined
Aug 4, 2005
Messages
26,878
Well if you read the whole post, you'll see the tracking company sent a technician who spent an hour with the car, monitoring the voltage across the unit itself and across the battery, and he claimed that it was drawing even less than specification. *shrugs* He said it happens quite frequently that OEM workshops call him in to check out cars where they suspect it's the tracker, only for him to prove to the workshop that it's something else in the car. Who am I to argue? They both took a stab at it, now I'll just hope the charger fixes the issue until I get to drive daily again.
Anything in the car that draws a steady current will run the battery down if the car is not used regularly. The tracker systems are all pretty power-hungry. Sure the technician comes in and checks, shrugs his shoulders because the unit is operating within specs.
I also removed mine because of the steady power drain. The tracker guys kept on sending me SMS messages after I first fitted an ON/OFF switch.

Car batteries are not supposed to be discharged like that and neither is car supposed to stand for days on end without a chance to charge.

PS: thanks for posting the manual very useful.
 
Last edited:

Foxhound5366

Executive Member
Joined
Oct 23, 2014
Messages
9,131
As far I see National Luna is local..

You gotta look at the C-Tek design. That's too close to be coincidence. If it's not outright theft, there's a licensing agreement they're not disclosing.
 

Foxhound5366

Executive Member
Joined
Oct 23, 2014
Messages
9,131
This one does it all for half the price
When I read about it, trickle chargers are good for healthy batteries, but they won't bring back deeply-discharged batteries. For that you need a charger capable of more intense pulse charging.
 

ProfA

Honorary Master
Joined
Jul 15, 2008
Messages
13,408
That's a good question but there are a few around that wait for you to press a button before continuing. Must be from countries where load shedding doesn't happen.
Must be honest, never seen one that requires you to press a button first. I have a CTEK and one of those oldies that show a gauge with a needle.
 

Nemesys

Senior Member
Joined
Dec 7, 2017
Messages
571
Anything in the car that draws a steady current will run the battery down if the car is not used regularly. The tracker systems are all pretty power-hungry. Sure the technician comes in and checks, shrugs his shoulders because the unit is operating within specs.
I also removed mine because of the steady power drain. The tracker guys kept on sending me SMS messages after I first fitted an ON/OFF switch.

Car batteries are not supposed to be discharged like that and neither is car supposed to stand for days on end without a chance to charge.

PS: thanks for posting the manual very useful.
I can only but agree with Geoff. I removed my tracker as well and although it improved things a bit there are stills lots of things that use power in the back ground. The radio is but one thing that comes to mind. The question to ask the technician is how much power does the unit consume. 0.1 amp will drain your battery in about 14 days.
 

Geoff.D

Honorary Master
Joined
Aug 4, 2005
Messages
26,878
What the hell, that looks like a ruggedized C-Tek charger. Did the Chinese get creative and just rip it off?
There are quite a few products that were proudly South African, designed and manufactured here. Then the ANC happened, buggered up the labour regulations and forced companies to move their manufacturing offshore, to places like China. Now? Who the hell knows, if the products are still the same as the original design and quality, or are slowly devolving into Chinese products.
 
Last edited:

Speedster

Honorary Master
Joined
May 2, 2006
Messages
21,685
There are quite a few products that were proudly South African, designed and manufactured here. Then the ANC happened, buggered up the labour regulations and forced companies to move their manufacturing offshore, the places like China. Now? who the hell knows, if the products are still the same as the original design and quality, or are slowly devolving into Chinese products.
You realise the Chinese make some of the most high end items on the planet?
 

The_Traveller

Expert Member
Joined
Aug 9, 2008
Messages
3,476
That’s what they told me a decade ago. I then had it removed, and no more issues.

“Technicians”... yeah...

If the battery is very old it’s worthwhile getting a new one though, but I’d put money on it being the tracker. Haven’t had a tracker since 2010 as I don’t like anything hardwired into a car, Africa style.
Be careful, he’s buying cars for a whopping 10 years, he knows more than everyone.
 

Napalm2880

Expert Member
Joined
Mar 8, 2007
Messages
2,931
I had an Optimate go bad on me just out of warrantee, can't be fixed so I went for one of these..


Use it on my bikes too..
After trawling through threads on MyBB and 4x4community.co.za, I settled on the National Luna. Many of the camping guys swear by it. I've had mine a while now and it's done exactly what I expected of it and it's slightly cheaper than some of the other brands.
 

Foxhound5366

Executive Member
Joined
Oct 23, 2014
Messages
9,131
Well, this bad boy arrived this morning...

20210118_080916.jpg

I'm taking the car out for a meeting this morning, so will plug it in when I come back and report here on how that goes :)
 

Foxhound5366

Executive Member
Joined
Oct 23, 2014
Messages
9,131
Well, we're in the final stage of charging and nothing has blown up yet:
20210118_125702.jpg


One little tip is that some cars have a dedicated "negative connection" to attach things like this charger or jumpstart cables to, like this (on my Polo there's a bolt marked with a - sign). Apparently if you try it directly to the battery's negative terminal you can fry your car's electronics:

20210118_125709.jpg
 

johnjm

Expert Member
Joined
Jul 26, 2005
Messages
2,541
Well, we're in the final stage of charging and nothing has blown up yet:
View attachment 996106


One little tip is that some cars have a dedicated "negative connection" to attach things like this charger or jumpstart cables to, like this (on my Polo there's a bolt marked with a - sign). Apparently if you try it directly to the battery's negative terminal you can fry your car's electronics:

View attachment 996108

But the ground terminal is connected directly to the negative terminal on the battery? What is the difference to connecting it directly?
 
Top