Re: Batteries and battery tenders - not a good idea?
[Re: 67SATisfaction]
#2494907
05/11/18 09:36 PM
05/11/18 09:36 PM
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Joined: Jan 2003
Posts: 1,482 Lake Orion, MI
goldduster318
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,482
Lake Orion, MI
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I use the deltran battery tender on the Duster and my Truck which I don't use so much in the winter.
The Duster's battery is 10 years old this month (Autocraft Silver) and tested at 535cca (525cca rated)
My Truck's battery is 7 years old (autocraft gold) and tests at 618cca (625cca spec).
I can't complain. I also use it on my lawnmower battery.
'70 Duster 470hp 340/T56 Magnum/8 3/4 3.23 Sure-Grip
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Re: Batteries and battery tenders - not a good idea?
[Re: pittsburghracer]
#2494945
05/11/18 11:12 PM
05/11/18 11:12 PM
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Joined: Jan 2003
Posts: 4,158 Canada -- Posts: 4034 -Registe...
5thAve
Doesn't care what this says anyway
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Doesn't care what this says anyway
Joined: Jan 2003
Posts: 4,158
Canada -- Posts: 4034 -Registe...
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I didn’t even read all these posts because this has been discussed so often. There is not reason other than laziness to leave a battery tender on for extended amounts of time. Get of your lazy butt once in awhile and put it on and take it off the next day every 2-3 months. This also gives you a good chance to burn a few calories and check things over. If reading a few nightmare stories about fires from these things doesn’t bother you, it should. That's pretty much what I do. Disconnect the battery and charge it once or twice over winter.
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Re: Batteries and battery tenders - not a good idea?
[Re: pittsburghracer]
#2495121
05/12/18 02:37 PM
05/12/18 02:37 PM
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Joined: Jan 2003
Posts: 25,967 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,967
Rio Linda, CA
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Depends on how much "parasitic draw" the car has. I have only one car with no parasitic draw and it'll start right up after sitting for months. All of my other cars have devices that draw milliamps when sitting idle and eventually the voltage drops enough to cause starting problems.
I use the Schumacher SE-1-12S onboard chargers. So take a battery cable off. Zero draw. Then you lose the whole purpose of those devices.
The INTERNET, the MISinformation superhighway
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Re: Batteries and battery tenders - not a good idea?
[Re: 67SATisfaction]
#2496230
05/15/18 12:02 AM
05/15/18 12:02 AM
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Joined: Jan 2003
Posts: 7,545 Albany, NY
67SATisfaction
OP
The member whose name is actually Art
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OP
The member whose name is actually Art
Joined: Jan 2003
Posts: 7,545
Albany, NY
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Thanks all,
Good info to absorb. I'm chucking the tenders. I still won't leave my batteries in the cars over the winter, but it's easy to check voltage thru the winter, and use a light 2A charge only if needed.
Only one car has significant parasitic draw to maintain memory functions, but it has its own dedicated tender. The rest are old and I only lose the radio presets in a complete power-off.
All my batteries have lasted me over 5 years, one is 8, with minimal maintenance, just a quick freshen-up charge in the spring.
One of the reasons I tried the tenders was because my one, expensive, vintage red-cap sulfated in less than 4 years. That one I treated the same as the others, taking it out and leaving it alone all winter.. but it was a true cap battery, needed to have distilled water level checked and charged and filled, specific gravity checked, etc.. and I kept after it real good too.
I bought two yellow-cap maintenance-free vintage repops, and they have been OK. One is 6 years and getting weak.. but neither one cooked any acid out on the battery tenders this winter.
Cheers, - Art
65 Satellite hardtop 361/4bbl console 727 2.76 67 Satellite convert 383/2bbl column 727 3.23 67 Lancia Fulvia Sport 1.3 Zagato. Alloy body, 1.3L V4 DOHC 4-spd 67 Lancia Fulvia Rallye 1.3. Alloy panel, 1.3L V4 DOHC 4-spd 71 Alfa Romeo GT Junior 1300 Zagato, 1.3L 4cyl DOHC hemi 5-spd 82 Alfa Romeo GTV6 2.5L SOHC hemi V6 5-spd transaxle 75 Maserati Bora US spec 4.9L DOHC hemi V8 5-spd ZF 77 Maserati Khamsin Euro spec 4.9L DOHC hemi V8 5-spd ZF 07 Aston Martin DB9 6.0L DOHC V12 6spd transaxle
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Re: Batteries and battery tenders - not a good idea?
[Re: 67SATisfaction]
#2496395
05/15/18 12:24 PM
05/15/18 12:24 PM
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Joined: Jun 2003
Posts: 2,412 Weatherford, Texas
RapidusMaximus
top fuel
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top fuel
Joined: Jun 2003
Posts: 2,412
Weatherford, Texas
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Wasn't it a charger or tender that caused the unfortunate incident in Rhinos garage?
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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