DesmoRR

I am looking for what the best battery tender is for the CGT. I travel a ton and wont be able to drive it all the time. It may go max of a few weeks without being driven. Shouldnt kill it, but whats the best? Thanks

No HTwo O

You can order these from Sunset too. Plug it in, close the door.

http://www.suncoastparts.com/product..._Code=gtengine

IXLR8

A battery charger/maintainer is chosen based on the type of battery to be charged, not the vehicle it is in.

tripleblack

Of the different tenders in my garage I prefer the CTEK:

W8MM

Absolutely, go with a charger/maintainer manufactured by C-Tek. Porsche private labels one from them here: http://www.suncoastparts.com/product//95504490054.html

Please DO NOT use the one at the top of the thread. They have a tendency to wear out their filter capacitors and then supply lots of 120 Hz ripple current to the battery which causes it to accumulate sulphates on the internal parts and die a pre-mature death. I know this from experience.

The C-Tek-manufactured devices uses a high-frequency switching converter instead of a transformer/rectifier to produce their charging currents and do not make ripple currents.

IXLR8

Mike, I have two of them and decided to take them into the lab for testing to see what voltage & current they limit at, at the various stages. I had a data logger connected.

Neither of them entered a "maintenance (float) mode" as advertized. They just compete their charge cycle and switch off, and only when the battery voltage drops to 12.8V do they switch back on again. Actually my preferred method of battery maintenance.

W8MM

Lawson4323

Or I can fly out there weekly and start it up and give it a few quick revs haha

Best battery tender ever and it gets to fluids going! lmao

Turb-OH Brad

I like the Porsche C-Tek. I wouldn't trust any other.

ECS Tuning

We have the Porsche branded C-Tek available, and I have found it works wonderfully.

MikeGT

I've been using the Porsche C-Tek for a couple of years on the CGT. However, someone suggested I set it on the Motorcycle setting. Huh? Anyone know why? Keeps the battery charge without burning it out over the long run??? I don't know....

IXLR8

If it operates just like the non-branded C-TEK, the motorcycle setting is at a lower charge rate of 0.8A instead of the 3.3A charge rate for the car setting.

If the battery is fully charged and you are using the C-TEK just to maintain it, the 0.8A setting is a slower charge rate. That is what I leave mine on when the car is just sitting there.

Jamie140

Always leave the rear bonnet propped slightly open with a soft towel so you can bump the car if the charger or battery fails.

bbs993tt

I just had to put in a new battery in the cgt and want to make sure I treat it correctly from the start. I have the CTEK. Does anyone else have any input on motorcycle vs. car mode?