What do you guys use to keep your batteries working when you have multiple cars?

[TK Doom]

Since i have 3 cars now, and i'm working on the 3rd car garage access, I don't drive my Cobras much and last time the batteries appeared to have trouble starting.

Both batteries are fairly new.

What is the SOP for taking care of multiple cars when you can't drive them with the same frequency?

TIA

 

[bglf83]

Battery tender, cheap less than $50.

 

[Thump_rrr]

Depends on what type of battery you have in your vehicle.
If you are using an AGM battery get a charger that is designed for it such as this one. http://www.ctek.com/cy/en/chargers/MXS 3.8
For lead acid batteries any cheap trickle charger will do.

 

[TK Doom]

So i just leave them plugged in forever? While not driving?

 

[ViperRed91GT]

Battery tender here as well. It's "smart", so there is no risk of overcharging.

 

[P49Y-CY]

i have 2 cobras and a f-150 truck, but don't seem to have this problem... but maybe it's because they are all my "dd's", so i i alternate them enough. my truck sits the most, but still never seems to exhibit slow starting.

i always buy motorcraft bxt-59 batteries and they seem to last around 4 years or so.

the solution: drive your cobras more! lol

 

[TK Doom]

Well, the 200k mile one needs some work, and i'm getting my 3 car garage issue fixed, so i'll have access to all soon. I really like my Fusion Sport though. LOL

 

[specracer]

+1 on deltran battery tenders. Some cars I leave plugged in all the time. some, I move the tenders around. I also have a ctek, but that car has a LiOn battery, so can't use the deltrans.

 

[nxhappy]

cheap battery tender from harbor freight will work just fine ....

 

[TK Doom]

So which one from here?

http://products.batterytender.com/Automotive/

 

[specracer]

I have the "plus". I got them off amazon.

 

[TK Doom]

not for sale in CA...wonder why.

 

[oldmodman]

I have a "Battery Tender" on every car and motorcycle, as well as an electric start generator. Seven in all. Newest is ten years old and all of them still work perfectly. Plus. They have extended the battery life from a year or two to over ten. Including the little lawn tractor one in the generator.
They are always on. I don't even unplug them when they are disconnected from the car.

 

[SID297]

I have quite a few of these and they help a ton:

https://www.napaonline.com/napa/en/p/NBC85300A/NBC85300A

 

[Brutal Metal]

I unplug the positive terminal from the battery for the garaged car and monitor it's voltage. Using a tender previously wasn't effective after a number of years...

 

[specracer]

I'd like to do that, but we have required state inspections, and it clears the ECU data, so cars are not ready. Drive cycles surely bring them back, but takes time, and miles, which somethimes I don't have.

I unplug the positive terminal from the battery for the garaged car and monitor it's voltage

 

[Never_Enough]

The Z06 is on a battery tender. The other 2 get driven enough.

 

[08mojo]

not for sale in CA...wonder why.

Apparently the regular 'plus' is not energy efficient enough for California. Get the 'Plus High Efficiency' that states it was made for use in CA:

http://products.batterytender.com/Automotive/Battery-Tender-Plus-High-Efficiency.html

I use battery tenders on several motocycles and my corvette. Have not had an issue in 5+ years for the motocycles and 2+ for the corvette. The supplied plugs make it really easy to use--you can mount the plug to where you do not have to pop the hood to connect/disconnect the charger.

There are also some pretty good 'accessories' from other companies to make the charging task even slicker, such as a magnetic charging port like this one: http://www.nakidparts.com/id127.html

 

[Iamchris]

Battery tender on both cars

 

[STAMPEDE3]

This is all I use on everything, Cars, mowers, 4 wheeler, anything that sits.
I have 4 of them for years and they work flawlessly. They are at Walmart and Autozone also.
http://www.northerntool.com/shop/tools/product_200456086_200456086