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Old 05-06-2010, 10:34 PM   #1
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Battery Tender? Pros & Cons?

Hey Guys,

Any input on battery tenders/chargers. I need a way to keep my the batttery in my vert charged over the winter.

Any input on something like this:


2004 /// M3 Convertible

Factory: Nav | Xenon | HK Sound System
Mods: Euro Programing For Remote Top ( Up & Down )| Hard Wired V1 | Hoen Fog's | Painted Reflectors | DICE HD Tuner W/ IPOD Cable | Dinan Short Shifter
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Old 05-06-2010, 10:39 PM   #2
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Just a thought.

Battery Tender reviews
In order to finish FIRST, you MUST first FINISH !

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Get your "M" on . . .
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2003 TIAG Coupe / Blk Interior / SMG / HK Premium
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Old 05-07-2010, 12:25 AM   #3
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I think the best Battery tender is the Yuasa Hot Shot. I have had three for many years and my Batteries just keep on going.
Seems well made and priced well. Check Ebay.
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Old 05-07-2010, 05:10 AM   #4
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we have a crap load of those in school and we've had em for like 3 years now and they still running pretty good, but you might be better off with what Nicad said, that one might work better over a load period of time
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Old 05-07-2010, 05:32 AM   #5
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I have one and like it. I drive mostly short trips and plug in the Battery Tender every other week just to keep the battery fully charged.
If I stored my BMW all winter, I would just connect it and forget it till spring.
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Old 05-07-2010, 07:08 AM   #6
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My Ride: E46 M3 2003.5
Look at the CTEK 3300, best small charger maintainer money can buy. 59.99
Current, worn out 2003.5 E46 M3 with 170k miles, Silver, fixing 13 years of neglect.

Previous BMW rides, 91 E30 318IS, 89 E30 325is, 96 E36 328is, 98 E36 M3, 99 E39 540 Sport, 00 368 M Coupe, 01 E46 330Ci, 2003 M3 Carbon Black, 1997 328IS, 2011 335 Sport sedan,
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Old 05-07-2010, 07:14 AM   #7
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Really no cons to these type chargers. I use 2 Schummacher chargers in my garage, a 2-8-12 amp with built in alternator output check function and a 1.5 amp mini maintainer. My E46 battery is 1 year old yet I still plug it in at least twice a week.

Last edited by 330I6SPD; 05-07-2010 at 07:23 AM.
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Old 05-07-2010, 09:07 AM   #8
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ive been useing battery tenders on my atvs, bikes, mopeds, and my boat. ive never had a problem. Now i would assum the same for the car.
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Old 05-07-2010, 12:16 PM   #9
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Only pros, no cons. I've used one like the one you are considering for years without any problems.
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