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Old 24th November 2008, 02:04   #1
illz
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battery tender hookup?

I picked up a battery tender - it has a few connection options - alligator clips, cig lighter, and ring terminals. I want to hook up the ring terminals but am not sure how best to. Since our trunk mount battery lacks the standard terminal posts, where have people who've gone that route hooked up the terminals? Granted, they should connect directly to the battery, but how have you guys done this?

Also, I read some other threads with links to tenders - BMW's for $100, another battery place for ~$50 - Sears has one for $19.99 - tough to go wrong! DieHard Battery Charger/Maintainer - Model 71219 at Sears.com
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Old 24th November 2008, 02:27   #2
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Quote:
Originally Posted by illz View Post
I picked up a battery tender - it has a few connection options - alligator clips, cig lighter, and ring terminals. I want to hook up the ring terminals but am not sure how best to. Since our trunk mount battery lacks the standard terminal posts, where have people who've gone that route hooked up the terminals? Granted, they should connect directly to the battery, but how have you guys done this?

Also, I read some other threads with links to tenders - BMW's for $100, another battery place for ~$50 - Sears has one for $19.99 - tough to go wrong! DieHard Battery Charger/Maintainer - Model 71219 at Sears.com
Owner's Manual Page 132. You can go wrong, if you choose one that doesn't shut off when the battery is fully charged. Also, it should be a SLOW charge so as to NOT shorten the life of the battery with "rapid charges."
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Old 24th November 2008, 03:05   #3
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I have one installed right next to my battery. It came with ring terminals, which I installed on the bolts which tighten the battery post rings. Just take off that nut and washer, slide the ring down and replace.

+1 on the above stating to get one that automatically shuts off.
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Old 24th November 2008, 05:18   #4
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I got a BT + [Battery Tender Plus, ~$45] initially for my BMW motorcycles. It's good for extended charging of all batteries except for the BMW AGM [Absorption Glass Mat] batteries.

While not optimal, I open the trunk, pull up the battery compartment cover, pull up the plastic battery cover [you need to unscrew the bolts on the sides] and connect the alligator clips, then leave the cover on lightly & close the trunk.

Which all works until that one day when I drove out of the garage with the tender still attached.....
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Old 24th November 2008, 06:03   #5
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I echo jclyman's statement regarding how you can go wrong. First off, don't skimp on the tender...just not worth it in the long run. Doesn't need to be the top model, but I doubt the $20 model will fit the bill.

Secondly, I hook mine up under the hood. I have enclosed a photo showing where to make the hook ups. The square cap (has a + on it) is your positive hook up and the bolt on the shock tower is the negative hook up.

Hope this helps.

Regards,

Justin
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Old 24th November 2008, 06:12   #6
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I have the battery tender jr. and use the terminal connection. And since I have the 6.5lbs Voltphreaks battery and have no need for the oem battery drain hole, I slipped the cable thru it and connect the charger under the car and just secure it using a velcro when not in use.
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Old 24th November 2008, 19:30   #7
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Quote:
Originally Posted by Justin13 View Post
I echo jclyman's statement regarding how you can go wrong. First off, don't skimp on the tender...just not worth it in the long run. Doesn't need to be the top model, but I doubt the $20 model will fit the bill.

Secondly, I hook mine up under the hood. I have enclosed a photo showing where to make the hook ups. The square cap (has a + on it) is your positive hook up and the bolt on the shock tower is the negative hook up.

Hope this helps.

Regards,

Justin
Thanks for the pic and looking out on the quality of the charger. The tech behind a battery tender is pretty simple and I trust Sears to get it right - it's no secret sauce that needs to cost a lot. They are / it is designed to be plugged in for extended periods of time, hence the float charge mode for fully charged batteries that only periodically turns on at lowest amperage as the battery dips slightly below full charge. I'm using an Optima red top battery, not OEM/Varta. Compare the Sears model to the other ~$50 one suggested in other threads - they are just about identical.

Gracias!
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Old 25th November 2008, 04:55   #8
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I use the cigarette lighter adapter. No issues.
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Old 25th November 2008, 06:08   #9
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Justin,
Good deal on that pic. I was gonna ask about an under the hood connection and you read my mind. But instead of the shock tower "-" connection isn't there another "-" for jump starting the car? Why not just use that?
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Old 25th November 2008, 18:09   #10
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Quote:
Originally Posted by TMcNasty View Post
Justin,
Good deal on that pic. I was gonna ask about an under the hood connection and you read my mind. But instead of the shock tower "-" connection isn't there another "-" for jump starting the car? Why not just use that?
Just about anywhere on the body or the engine. Any steel bolt threaded into the engine block is grounded.

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