CEN-TECH 12V Automatic Battery Maintainer for $6.99, 7-Function Digital Multimeter for $3.99

mangospringroll

Jan 7, 2024 7:28 AM

30 Comments

Joined Nov 2016

mangospringrollJan 7, 2024 7:28 AM

30 Comments

I have the multimeter in the trunk (when it was free with coupon few years ago). Just check its battery from time to time.

Trickle charger should also come in handy. Good price as budget item.

3

coolbeanz

Jan 7, 2024 9:39 PM

1.6K Comments

Joined Jan 2006

coolbeanzJan 7, 2024 9:39 PM

1.6K Comments

Our community has rated this post as helpful. If you agree, why not thank

Have this trickle charger and a few others, prefer the quick disconnect ones from cycle gear (They go on sale for a few more dollars than this). They have the same plug as battery tender (the one from cycle gear)

I have like 6 cars and 5 motorcycles now so I have my experience with trickle chargers ><

Link for the cycle gear one, of course its not on sale now though, but if you can wait , they go down to 10 dollars or so every now and then

https://www.cyclegear.com/accesso...id=1128118

Last edited by coolbeanz January 7, 2024 at 01:44 PM.

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vivek

Jan 7, 2024 10:07 PM

889 Comments

Joined Aug 2003

vivekJan 7, 2024 10:07 PM

889 Comments

I got my multimeter few years ago for free with a purchase. It worked great except the negative electrode wire got disconnected.

Not sure what to do with it.

Adelley

Jan 7, 2024 10:08 PM

10.5K Comments

Joined Nov 2013

AdelleyJan 7, 2024 10:08 PM

10.5K Comments

Is this where you connect it to the battery the night before just in case the next day is so cold your battery might not start, so this gives a higher chance of starting?

1

Exynos

Jan 7, 2024 10:10 PM

833 Comments

Joined Dec 2015

ExynosJan 7, 2024 10:10 PM

833 Comments

Quote from Adelley

:

Is this where you connect it to the battery the night before just in case the next day is so cold your battery might not start, so this gives a higher chance of starting?

Yes and mainly to keep cars that aren't powered for a while with a charge

4

TrollingBy

Jan 7, 2024 10:11 PM

4.1K Comments

Joined Nov 2013

TrollingByJan 7, 2024 10:11 PM

4.1K Comments

Quote from vivek

:

I got my multimeter few years ago for free with a purchase. It worked great except the negative electrode wire got disconnected.

Not sure what to do with it.

Measure the positive twice.

2

1

3

TrollingBy

Jan 7, 2024 10:13 PM

4.1K Comments

Joined Nov 2013

TrollingByJan 7, 2024 10:13 PM

4.1K Comments

Quote from Adelley

:

Is this where you connect it to the battery the night before just in case the next day is so cold your battery might not start, so this gives a higher chance of starting?

Mainly for vehicles you don't use often it just maintains the battery for them.

Also if your battery died and you don't need it right away you can plug it to this instead of jumping it but it'll need at least over night to charge it up enough to crank.

Also if you buy a new battery that comes discharged you can connect it to this to charge it. (usually the ones where the need to fill the liquid yourself)

5

vivek

Jan 7, 2024 10:23 PM

889 Comments

Joined Aug 2003

vivekJan 7, 2024 10:23 PM

889 Comments

Quote from TrollingBy

:

Measure the positive twice.

I mean the negative wire is totally unusable and wouldn't close the circuit.
I don't understand what you mean unless you are just trolling by.

ScavGraphics

Jan 7, 2024 10:34 PM

649 Comments

Joined Jul 2018

ScavGraphicsJan 7, 2024 10:34 PM

649 Comments

Quote from vivek

:

I mean the negative wire is totally unusable and wouldn't close the circuit.
I don't understand what you mean unless you are just trolling by.

Do you mean probe? Or inside the multi meter itself?

If the probe there easily fixable… It's just a wire… Or replaceable.

Shock96

Jan 7, 2024 11:26 PM

2.7K Comments

Joined Feb 2005

Shock96Jan 7, 2024 11:26 PM

2.7K Comments

I have a few of these. Make sure you test them right away for the correct power delivery.

Most seem to be ok but I have had a couple the over voltage which is more of a problem when you have long term battery maintenance.

2

gordgeck

Jan 7, 2024 11:27 PM

1.6K Comments

Joined Nov 2008

gordgeckJan 7, 2024 11:27 PM

1.6K Comments

I don't think I'd trust a $10 battery charger from Harbor Freight and man those wires look thin.

6

SkillfulWallaby573

Jan 7, 2024 11:49 PM

10 Comments

Joined Jun 2022

SkillfulWallaby573Jan 7, 2024 11:49 PM

10 Comments

Did some research, forum talking about various users who have had electrical fires due to the inexpensive manufacturing. Just wanted to pass this along as I would hate to have anyone end up in a similar situation. Even if the chances are 1 in a million, I wont be chancing it.

https://www.piloteers.org/threads...sk.174544/

2

azadv

Jan 7, 2024 11:57 PM

75 Comments

Joined Nov 2017

azadvJan 7, 2024 11:57 PM

75 Comments

Stay away from these harbor freight chargers, I've heard about more than one instance of them catching on fire. Just last year a friend had his garage and part of his house completely destroyed and they were lucky to make it out.

3

DaveC4644

Jan 8, 2024 12:22 AM

727 Comments

Joined Dec 2017

DaveC4644Jan 8, 2024 12:22 AM

727 Comments

Quote from coolbeanz

:

Have this trickle charger and a few others, prefer the quick disconnect ones from cycle gear (They go on sale for a few more dollars than this). They have the same plug as battery tender (the one from cycle gear)

I have like 6 cars and 5 motorcycles now so I have my experience with trickle chargers ><

Link for the cycle gear one, of course its not on sale now though, but if you can wait , they go down to 10 dollars or so every now and then

https://www.cyclegear.com/accesso...id=1128118

I have 3 toys I keep on a trickle charger. I use a 1 to 3 SAE adapter and they are all wired to 1 charger. Handy.

JBandSDs

Jan 8, 2024 12:28 AM

292 Comments

Joined Sep 2011

JBandSDsJan 8, 2024 12:28 AM

292 Comments

Quote from gordgeck

:

I don't think I'd trust a $10 battery charger from Harbor Freight and man those wires look thin.

I got these about a year ago to replace a couple I got from HF back in the early 2000's because the clamps were corroding, and I was surprised at how light these are. They are probably half the weight of the older ones and the wire do seem a bit thinner, but they work fine, I have garden tractor with a battery that is 9 years old this month and it still starts right up(started it last week in the cold). I credit it to these maintainers and being kept inside. I have had several different maintainers and most worked fine. Remember these are maintainers and not battery chargers. They won't charge a dead battery, only charge back or top off a battery that has dropped below around 12.6 volts.

I got this one on sale from Northern a few years back and it's been good on my older car's battery. It also has "High-frequency pulses safely remove sulfate from battery's plates that prevent the batteries from holding a full charge." It's $20 with free pickup from a Northern Tool store.
https://www.northerntool.com/prod...7tc-167981

CEN-TECH 12V Automatic Battery Maintainer for $6.99, 7-Function Digital Multimeter for $3.99

$6.99

$9.99

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