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Re: *Battery Charger*
olezippi #1366751 Sun Jun 28 2020 01:24 AM
Joined: Jun 2008
Posts: 1,476
Shop Shark
I was looking for a “real” battery charger last year after having to trash 3 of the Sears Dihard trickle chargers that stopped working within a year. Picked this up at Tractor Supply and have been pleased with it. It’s built old school and is well made.

Attached Files
7EAF49CC-8A27-44A3-95BB-5B9F04515720.jpeg (213.85 KB, 168 downloads)

1950 Chevy 1/2 ton (original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod
Re: *Battery Charger*
olezippi #1366802 Sun Jun 28 2020 12:50 PM
Joined: Feb 2019
Posts: 1,214
AD Addict
Personally, I would keep them separate. I have the “Battery Tenders” to keep my unattended battery’s from going belly up and I have a 50-10-2 amp charger for general charging and boosting. The 50 amp boost has saved me countless times. I usually charge for 10-20 minutes on 10 amps, then switch it 50 amps to crank her over. The 50 amp boost is only good for about 15-20 seconds of cranking before you hit its duty cycle.

I have a Sears brand for thirty years, still going but its a manual charger, meaning it needs to be attended or you can cook your battery, if you don’t keep an eye on it. Three years ago, I bought a HF 50-10-2 automatic charger that I bought on sale for for thirty dollars. Only time will tell if it was a good buy.

One more thing about automatic chargers. They will not charge a totally dead battery. Their circuit board needs to sense voltage from the battery in order to kick on their charging circuit. Thats why I keep my old Sears manual charger.

Just my thoughts!


1952 Chevrolet 3100
Project Journals
‘59 235 & hydraulic lifters
“Three on the Tree” & 4:11 torque tube
12v w/ Alternator
Re: *Battery Charger*
olezippi #1367219 Tue Jun 30 2020 10:07 PM
Joined: Mar 2010
Posts: 926
yar Offline
Shop Shark
"My old charger went belly up so I'm in the market for a new one."


When my battery charger went belly up about 10 years ago I did a little online research and found that a failed diode is often the culprit and I found a video showing exactly how to replace the diode. So I got an inexpensive bag of 3 alternator diodes on Ebay and installed one of them. That fixed the battery charger for way less than the sales tax alone on a new one, and the job took only a few minutes. That old battery charger is a really nice made in USA tool that was definitely worth saving. It's still going strong too.

Ray W

Re: *Battery Charger*
olezippi #1367328 Wed Jul 01 2020 05:00 PM
Joined: Nov 2019
Posts: 490
Shop Shark
Thanks for the info guys. I think it was time anyway. I want something that I don't have to check on. Just connect it and let it do it's thing.

"If you can't fix it with duct tape it's an electrical problem"
1949 5 Window 3100
Veteran of the USAF

Re: *Battery Charger*
olezippi #1367414 Thu Jul 02 2020 03:45 AM
Joined: Jun 2010
Posts: 420
Shop Shark
I had a battery tender on my trailer battery
And I was on vacation it had been the on for 1 month
And it blow up while I was gone.
But I been using battery tenders for years.

Re: *Battery Charger*
olezippi #1368530 Fri Jul 10 2020 05:01 PM
Joined: Nov 2019
Posts: 490
Shop Shark

"If you can't fix it with duct tape it's an electrical problem"
1949 5 Window 3100
Veteran of the USAF

Re: *Battery Charger*
olezippi #1368577 Fri Jul 10 2020 09:30 PM
Joined: Feb 2004
Posts: 21,648
Battery manufacturers listen to their customers and supply them with what they demand. About 30 years ago, a lot of customers said "I.'m too lazy to pull the caps off battery cells occasionally and check the electrolyte level and add water if necessary". The battery makers responded by developing "maintenance-free" batteries with sealed cell groups. They didn't work as well, or last as long as conventional batteries, but they were OK for most purposes. As long as a battery gets "exercised" occasionally, discharged about 25% or less and recharged, it will last longer and give better service than one that sits for weeks or months at a time without doing what it was designed to do- - - -provide a quick surge of starting current, and then get recharged over several minutes, or up to a few hours of vehicle operation before the next shutdown and restart. Extremes of operation at either end of the discharge/recharge envelope shorten battery life and/or require a different charging system or a "maintainer" to substitute for normal operation.

Recharging a low or dead battery and "maintaining" one that sits idle for extended periods requires different equipment. Trying to multi-task where battery charging is concerned doesn't accomplish either job as well as it could be done with dedicated equipment for both tasks. Most battery users don't know (or care) what's actually going on inside a battery- - - -they just want the thing to work right every rime, with no preventive maintenance whatsoever!

The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: *Battery Charger*
olezippi #1371787 Sun Aug 02 2020 02:58 PM
Joined: Sep 2001
Posts: 30,843
ace skiver
This thread caused me to look for a better Battery Tender for my 6v trucks - they have several year old Optima AGM Batteries. These work best with AGM [] battery chargers/maintainers.

Optima batteries are excellent batteries that need special charging/maintaining techniques/equipment.

The Battery Tender suggestion above is for lead-acid sealed/unsealed batteries (I already have a old 6v/12v Lead-Acid Battery Tender). It is an excellent device.

That caused me to search for a 4 AMP Battery Tender 6v/12v AGM/Lithium/Lead-acid charger and maintainer.

Here is the best priced 4 AMP Battery Charger/Maintainer "Battery Tender" that I could find. [] - (it includes a 6 foot power cord and 5 foot battery cables)

Tim []
1954 3106 Carryall Suburban [] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. []
Re: *Battery Charger*
olezippi #1382853 Fri Oct 30 2020 07:45 PM
Joined: Nov 2019
Posts: 490
Shop Shark
Well.....I finally got around to buying a battery charger. Black Friday sales started today at Harbor Freight so I got 15% off. I was looking for one of the Battery Tender Plus locally but nobody had them and their were no sales online. This Cen-Tech charger is a little bigger on amps at the same price so I'm satisfied. Now a days I don't think one is much better than the other. Just not like it was back in the day when a manufacture was proud to put his name on a product that would last forever. Well....almost forever.

Attached Files
20201030_142135.jpg (103.6 KB, 26 downloads)
20201030_134426.jpg (88.81 KB, 26 downloads)

"If you can't fix it with duct tape it's an electrical problem"
1949 5 Window 3100
Veteran of the USAF

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