Red top Optima - Ctek 7002 battery maintainer issue

I will check what model ctek I have. Bought it like 4 years ago. Always have used it with optima red. No issues. No noises.

 

AGM batteries do not require an AGM specific setting on the battery tender. Some battery tenders have developed AGM specific charging profiles, none of the AGM battery manufacturers specifically require them. Some do say that AGM specific charging profiles may help restore a deeply discharged AGM battery, and may enhance battery life.

I retired my factory Ferrari/Ctek charger as it too, was acting strangely. I've seen enough complaints here and on other forums to not have much confidence in them. I have successfully been using a Granite Battery Saver that Brian Crall recommends (Rifledriver). They have recently updated them to eliminate the dip switches, making them "plug and play" simple. The 25 watt version with the LCD display is similar to the older version I have with the dip switches.
https://www.batterysaver.com/store/p16/3015-lcd

 

BTW, there is a new brand NOCO I see being marketed that looks very interesting, and packed with features. They make several versions, but the 3500 model seems to have the most features and sits in the "middle" of their line up with a useful 3.5amp charging rate: https://no.co/g3500 I just wonder if it is very reliable or long lasting.
It not only has an AGM charging profile, but also a lithium ion setting. It also have a "motorcycle" or small battery setting, all of which makes it very versatile.
But again, being so new, who knows if it really does everything it claims, and will last a long time or not?

I have been using my Granite Battery Saver for about four years now, and have no complaints. It is compatible with AGM batteries and ruggedly constructed.

 

Here is what I use and it works great.
I've been using it now for 3 years and still works flawlessly.

And yes, as F355spider have mentioned it is a versatile charger as it has modes for different types of batteries including Lithium, AGM which is what I have on my F430 Spider.

https://smile.amazon.com/NOCO-G3500-UltraSafe-Battery-Charger/dp/B004LWVEKS/ref=sr_1_1_sspa?ie=UTF8&qid=1519622433&sr=8-1-spons&keywords=noco+genius&psc=1

Dan

 

Dan, that is awesome to hear it works well...I am tempted to get one...just cause I like to play around with them, and own several different ones.

BTW, to the OP, one of my favorites I have been using for many years is an older Griots Garage Battery Manager IV (3.5amp charging rate). It has been around for a long time, and Griot's is offering a very good price on them right now, only $45 (and their standard lifetime warranty!) https://www.griotsgarage.com/product/battery+manager+4.do It is also compatible with AGM batteries, and while I have been using it with my BMW for the past 6 years or more, I recently swapped it over to using with my 430 Scuderia which has a red top Optima, and it continues to give great service.

 

I think you will like the NOCO 3500. As I mentioned I've had mine for over 3 years and it works flawlessly.
Just make sure you select the type of battery you have hooked up to it.

Also, if you are not in a hurry, a lower amp recharge is better than high current charging. Fast charge cooks the battery.

And also always remember to replace your battery preventively every 4 years max.
Battery usually dies when least expected and as you may have read here, our cars are not a fan of being jump started as it could cook the ECU's in the car.
Our cars electrical system is very sensitive to voltage fluctuations so ensure you're battery is always good.

I cant recommend lead acid as when it leaks it will eat the floor metal. Ask me how I know.
I like AGM's. They are sealed, no vent tube required and no possible leaks.

Hope that helps.

And yes, me too, I go down to my garage each night before I go to bed to admire that beautiful car sitting in my garage that it is mine and worked very hard for.
A dream car come true for me.

Dan
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I have the Ctek 3300 with my red top and it works great. Except my wife ran it over a few weeks ago so I need to buy a new one.

 

This is what I use and have been very happy with it....plug and play....no worries.

 

There is no harm with top down continuously in my experience. I owned a 1997 F355 spider for over 10 years and only put the top up to wash it, or for two to three week stretches in winter. I drove top down, even in winter, as long as it wasn't raining or snowing. I sold the car in 2014 with the original top still in great condition, no puckers or issues.

 

Thanks for the compliments!

NOCO Battery charger:
It's design is to slow charge the AGM battery.
As I mentioned, fast charge/ high current charge shortens the life of the battery as the battery gets hot.

NOCO charges at low current and will take overnight to fully charge.
Just plug it in, select AGM and leave it on and let it do its job.
The next day it will light up green and will show fully charge. That is by design.

Capote roof top:
Great question. When I go out for a drive, its usually top down. When I park it in garage, its usually top up to stretch the fabric back.

But there are times I want to work inside my car that I just leave the top down while parked inside the garage No harm in doing that.

Hope that helps.

Dan

 

Yes, the green light will continue to blink until the attached battery is fully charged.

I usually get a green light after a full day of the charger being hooked up.

How old is your battery?
When was the last time you drove it?

Dan

 

Kindly double check all your charger settings.

Is your battery AGM or Lead Acid? Do you have that set correctly?
Do you have it set to 12V instead of 6V?

BTW, my experience with car batteries is they only last maximum of 4 years.
I recommend replacing them before 4 years is up or one day it will just leave you stranded somewhere.

I would give it another day if I were you.

Now if you have it hooked up after 4 days and its still blinking green then my recommendation is to return it to Amazon as defective and get a new one as replacement. Amazon easy returns.

 

Faster response from the manufacturer:
NOCO - Support