Which battery tender to buy?

[TrentW]

I realize winter is coming to an end, but I'm looking at buying a battery tender for next year and not sure what I need. I've been just starting it up every couple of weeks in the garage the past few winters and whenever it was nice enough, I'd take it out for a drive long enough to get it to full operating temp. But then once I was lazy and it was cold out, so I let it go for too long and the battery went dead. So dead that my little charger gave me a fault reading and wouldn't even charge it. Luckily, I've become friends with the guys at a shop just down the street and they charged it for free. I'm thinking next year I'll put it up on stands and bring the battery inside and keep it in the basement on a tender. Deltran has a couple of different tenders, a 1.25 amp and a "Junior" .75 amp that's a nice compact little unit. If I bring the battery inside so there's no draw on it, I'm thinking the .75A would work. If I leave the battery in the car, I'm thinking the I'd need the larger 1.25A unit. I talked to a girl at Deltran and she said if I take the battery out the .75A would be fine, but she didn't seem all that knowledgeable.

Any recommendations?

[Naplm00]

I like the Battry tender junior or batteyr tender waterproof, they have the same exact charging circut as the ful size one and are smaller. They are lower amperage tho, so they will take longer to charge a larger battery

I used to sell baout 10 of these a week when workign in a BMW motorcycle shop, they newer ones will even charge BMW gel batteries, dry cells and deep cycles


also a easy way to pick one up withotu paying shippgin is go to a motorcycle shop

[europeanplates]

I have bought and sold these a bunch. I know there are some knock off ones but the ones I sold in the past where from deltran. I am unsure if my supplier still has this on his line card but I could chekc.

Thanks,

Tyler

[TrentW]

Great--let me know. I'm gonna go w/the Junior .75A.

[Eurospec]

Check out the user reviews on Amazon, well over 200 reviews for both the plus and junior. Free shipping, no tax (depending on state) to boot.

[Cruzer]

Ctek. OEM for Porsche brand chargers. Worth the $$.

[Naplm00]

hi..
I don't have much idea and if you want to know i will surely find it soon because its new for me..

wtf?

[StereoInstaller1]

^better bots

[bejbis]

i use the wall chargers that plug into various cell phone chargers or random electronics ive had over the years. If you read the output voltage on them, most of them will be 12v dc. I also use them to test various car electronics for function. For higher wattage items i use a old computer power supply, they have a great regulated 12v source.

here is a link for how to make your own battery tender.

http://autospeed.com/cms/A_110354/article.html

btw, you can find out how many amps your car pulls when its off with a digital multi meter. shouldnt be more than 100 milliamps, .75 or 1.5amps if your car is completely off is WAY excessive, and you have other problems.

To test, put your DMM on mA, take off a connector on your batter and connect the leads to the battery and the disconnected battery wire.