Battery Tender - if it's good enough for them... Options

[osvolant]

Been using a Battery Tender for the last 2-1/2 years on my 914, ever since I bought it. I have also used it to "rejuvenate" an old battery on one of my other cars, after adding water.

Aviation Consumer, a sort of Consumer Reports publication for general aviation, tested float chargers for aircraft a few years ago. Battery Tender and Battery Minder were the only ones that maintained the proper float voltages for 12V wet cell aircraft batteries- basically the same as car batteries but much more expensive, of course.

[Rand]

I just buy the Harbor Freight "float Charger" when they go on sale for about 5 bucks. Been using them for years now, they work really well.

http://www.harborfreight.com/automatic-bat...rger-42292.html

Funny timing. I just got the HF promo email and guess what coupon is included?.......


(IMG:http://www.914world.com/bbs2/uploads_offsite/images.harborfreight.com-3573-1314932457.1.jpg)

[underthetire]

There you go! I add a molex connector from radio shack to the end and mating one on the dirt bikes. Abot a buck and a half, but I don't have to remove covers to get to the battery.

[PlaysWithCars]

For what it's worth. I used to use the inexpensive Harbor Freight units too until one fried a battery and boiled it over; lots of work to clean up. Doing the post mortim on it, I found it was putting out 18V. Got me thinking about the others I was using. Out of 3 of them, 2 were way too high for voltage.

I've since invested in a Battery Minder unit and love it. I got one that can charge AGM as well as wet cell batteries and does desulfation while in float mode (fantastic for recovering batteries). Everytime I've checked it voltage is right on.

Harbor Freight has some inexpensive tools that do the job, but they also have some cheap tools. I'm staying away from there float chargers since my experience.

[nsr-jamie]

Sorry, totally off topic but a silver Lamborghini Countach.....I can't remember seeing them in those colors, looks incredible...the 959 looks sweet too...always had a thing for the Countach cars...someday I would like to check out that museum if its widely open to the public.

[Rod]

Oh come on - buy the right one!!!!!


(IMG:http://www.914world.com/bbs2/uploads_offsite/i62.photobucket.com-8526-1315258180.1.jpg)

Did Porsche ever do a motorbike????? It's a Ctek 3600 rebranded by Porsche.

[Rand]

For what it's worth. I used to use the inexpensive Harbor Freight units too until one fried a battery and boiled it over; lots of work to clean up. Doing the post mortim on it, I found it was putting out 18V. Got me thinking about the others I was using. Out of 3 of them, 2 were way too high for voltage.

I've since invested in a Battery Minder unit and love it. I got one that can charge AGM as well as wet cell batteries and does desulfation while in float mode (fantastic for recovering batteries). Everytime I've checked it voltage is right on.

Harbor Freight has some inexpensive tools that do the job, but they also have some cheap tools. I'm staying away from there float chargers since my experience.

I hear you.
I've had no trouble over the past couple of winters. If it had been putting out too much voltage I would have exchanged it.
Point: If you buy a HF unit, check it with a meter. If it is within spec, you save a ton of money. If not, exchange it for free.
If money is no object and/or you don't want to see if it is in spec for yourself, buy the brand name.