Battery Maintainer
T2T SUPPORTER
Joined: Jul 2013
Posts: 9,117
Likes: 5,024
From: NNCC No Name Car Crew; Owned 1 C2, 2 C3's, 1 C4, 3 C5's, 1 C6, 2 C7's; Now '86, '03; S. DE
2024 C5 of the Year Finalist - Modified
2024 C4 of the Year Finalist - Modified
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2023 C5 of the Year Finalist - Unmodified
St. Jude Donor '21-'22-'23-'24-'25-'26
C-tek on Vette, Battery Tender Plus on other applications.
Race Director
Joined: Aug 2015
Posts: 12,248
Likes: 4,740
From: SE WI
I use the OEM C7 battery tender.
I also have a Deltran Battery Tender Plus as a backup. I had to buy the power port plug adapter for the vette.
I also have a Deltran Battery Tender Plus as a backup. I had to buy the power port plug adapter for the vette.
Last edited by Zjoe6; Aug 24, 2021 at 10:44 AM.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
- MXS 3.8 – One of CTEK´s entry level models, it provides all round charging through a 7-step charging cycle that includes a desulphation feature and maintenance charging.
- MXS 4.3A $104 on Amazon
- MXS 5.0 – A state-of-the-art 8-step charger with a special reconditioning function. It also features battery diagnosis so you know the state of your battery’s charge and whether it can hold its charge properly. As with all CTEK chargers, it has an optimised charging mode for when more power is needed during cold weather.
- MXS 7.0 – A great universal charger with slightly more power, including a battery capacity of 14-150Ah up to 225Ah for maintenance. This is an 8-step charger with a power supply mode so the battery can be disconnected without losing or damaging the vehicle’s important electronic configurations.
Elmer
Last edited by eboggs_jkvl; Aug 24, 2021 at 10:46 AM.
Supporting Lifetime
Joined: Sep 2005
Posts: 4,273
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From: Syracuse NY
2024 C7 of the Year Finalist - Unmodified
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2020 C1 of the Year Finalist - Unmodified
2016 C1 of the Year Finalist
If you absolutely have to have the C-Tek, it's a great unit with hundreds of users. I have used a Black & Decker Model BM3B for the last six years on my C7 and it works fine, for considerably less money (can easily be found for about 25 bucks on sale).The C-Tek is about $125. They do the same thing. Your choice.
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Drifting
Joined: Sep 2019
Posts: 1,909
Likes: 1,953
From: Colo Spgs, CO
OEM CTEK which, IIRC, amounts to a simplified CTEK US 0.8 on my C7Z. CTEK MULTI US 7002 for everything else in the garage. Happy with the performance of both.
Other options about which I've heard good things include BatteryTender and NOCO.
Other options about which I've heard good things include BatteryTender and NOCO.
Le Mans Master
Joined: Dec 2012
Posts: 6,442
Likes: 2,535
From: New Jersey
- MXS 3.8 – One of CTEK´s entry level models, it provides all round charging through a 7-step charging cycle that includes a desulphation feature and maintenance charging.
- MXS 4.3A $104 on Amazon
- MXS 5.0 – A state-of-the-art 8-step charger with a special reconditioning function. It also features battery diagnosis so you know the state of your battery’s charge and whether it can hold its charge properly. As with all CTEK chargers, it has an optimised charging mode for when more power is needed during cold weather.
- MXS 7.0 – A great universal charger with slightly more power, including a battery capacity of 14-150Ah up to 225Ah for maintenance. This is an 8-step charger with a power supply mode so the battery can be disconnected without losing or damaging the vehicle’s important electronic configurations.
Elmer
Team Owner
Joined: Sep 2000
Posts: 25,007
Likes: 2,707
From: Far NW 'burbs of Chicago
St. Jude Donor '13
The male plug started losing the connection after a year and the dealer replaced it under warranty.
Slightly used ones are available pretty cheaply.
The one that comes with the car has no user-selectable settings, apparently GM decided that giving people setting choices means the people can select the wrong choices, so it's got the setup that works best for a stock C7 & battery.
I have another CTEK with the selections, in case I need them for something.
Instructor
Joined: Sep 2019
Posts: 162
Likes: 77
From: Tequesta, FL
Ctek with a DC extension cable. Got it on Amazon. Perfect. I use several Black and Decker around the house for other batteries. Also use a Guest tripple battery. The Ctek is the best by far and well worth the money.
Model:
Model:
CTEK (56-353) MULTI US 7002 12-Volt Battery Charger
Also, I needed the Ctek adapter for the connector located at the rear passenger side.Last edited by radar314; Aug 24, 2021 at 04:37 PM.
Moderator
Joined: May 2010
Posts: 15,236
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From: Northern Illinois
2023 Corvette of the Year Winner - Modified
2022 C7 of the Year Winner - Modified
St. Jude Donor '18 thru '25
OEM Ctek model that came with car.. stay away from cheapo off brands or make sure everything insured well
Le Mans Master
Joined: Dec 2000
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Racer
Joined: Aug 2021
Posts: 452
Likes: 212
From: New Jersey
If you absolutely have to have the C-Tek, it's a great unit with hundreds of users. I have used a Black & Decker Model BM3B for the last six years on my C7 and it works fine, for considerably less money (can easily be found for about 25 bucks on sale).The C-Tek is about $125. They do the same thing. Your choice.
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
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I use the Ctek maintainer available through GM. However it is cheaper if bought from places other than the dealer or you can find them often in the C7 Parts for Sale section.