Harbor Freight car battery chargers any good?

[ron350]

Re: Harbor Freight car battery chargers any good?

The HF 63350 charger/maintainer seams to be hit or miss on quality control.

Purchased one on sale in 2019 that was an open box (returned ) charger and it would not stop charging. After 48 hours it was charging with 15 volts so I returned it.

This year they put them on sale again and I picked up a sealed new box and this charger has worked fine.

[eccerr0r]

Re: Harbor Freight car battery chargers any good?

I still have/use one of those ancient large transformer chargers...sigh. Wonder if it's worth to mod it to regulate it or stop it from charging once it reaches full voltage...

I still wonder what the "50 amp start" mode is however. Seem some bad juju is being done to get the 50 amp mode on my charger. If only it had screws in the case and not rivets, it'd be open by now to be inspected and/or modded...

[caphair]

Re: Harbor Freight car battery chargers any good?

I’ll probably pick one up. My car’s battery is at 12.3v currently and want to prevent it further discharging

[televizora]

Re: Harbor Freight car battery chargers any good?

Thanks for the info. Does it auto turn off when full charge is reached? I know some don’t and can cause an issue

Yes, all SMPS chargers I know turn off when the battery is charged. And they try to maintain the voltage. This means if that the battery self discharges after some time, they will charge it back to full capacity/voltage and then turn off again. Those cheap pesky red metal box chargers with amp meter don't have such function. Most of then are trash, barely work, heat up and will charge the battery until they blow up or the battery starts to leak/melts/explodes.
The problem is that the charger can't know that your battery is bad and can't be charged to full capacity. In this case they will stubbornly try to charge a battery, which cannot be fully charged. This can lead to electrolyte bubbling/boiling and battery heating up. So, you have to supervise the charging process and check every several hours what's happening. And charge the battery on non flammable surface/chemical resistant surface. You don't want electrolyte stains or leaks on your carpet.
p.s The charger from your link comes with 90 days of warranty. Mine came with 2 years of warranty each. EU legislation.

people tend to think there is something wrong with these chargers because if battery low they don't seem to work .this is not the case . just leave it connected and let it do its thing . they automatically pulse charge for a while . if that doesn't work its worth try jumping it with another charged battery or a regular charger to bring the voltage up ..i find if it doesn't start charging most times its because the battery is knackered.
a car battery low voltage should come back up in little time if the battery is any use .

Most of these chargers can't be even switched to charging mode if the battery is below threshold voltage, unless you trick them. Mine don't provide any voltage if they can't recognize the type of battery, unless you trick them. Zero volts on the clamps. Nada.
But usually you will notice that something is wrong and the car starter is cranking the engine more slowly than usual and the lights on the dashboard flicker seriously and you need to check and charge the battery, before the battery goes below the threshold voltage of this kind of chargers.

[petehall347]

Re: Harbor Freight car battery chargers any good?

people tend to think there is something wrong with these chargers because if battery low they don't seem to work .this is not the case . just leave it connected and let it do its thing . they automatically pulse charge for a while . if that doesn't work its worth try jumping it with another charged battery or a regular charger to bring the voltage up ..i find if it doesn't start charging most times its because the battery is knackered.
a car battery low voltage should come back up in little time if the battery is any use .

[caphair]

Re: Harbor Freight car battery chargers any good?

Thanks for the info. Does it auto turn off when full charge is reached? I know some don’t and can cause an issue

[televizora]

Re: Harbor Freight car battery chargers any good?

So other than that you think it’s a good enough charger? Would other cheaper ones from HF be just as good? I mainly need one to maintain a charge as sometimes the car isn’t driven for over a week or more

I don't know. I have two. What do you think?
They work. And here, the cheapest versions of this charger are about 15EUR.
It is waaay better than red metal ones with amp meter, which are mostly trash.
It is small, compact charger, that doesn't heat up too much when charging and is even somewhat water spash resistant. There is a rubber seal between the two parts of the case. Although this is usually not advertised feature and I wouldn't recommend charging your battery outside in the rain.
The version with the voltmeter is even better. I have one from the older revisions, without led display and voltmeter and one from the newer revisions with led display, which shows battery voltage and charge level.
They work fine and can charge my 72Ah car battery to an acceptable level and charging 6V batteries is a bonus.
It is ideal charger if you occasionally need charger, to charge your car battery or to help a friend or to charge 6V batteries.
If you have a garage and charge batteries on a daily basis, I wouldn't recommend it. It's not that fast and cant charge 24V truck batteries.
Google Lidl battery charger and you will see that these are generic chargers.
Just know that if your 12V battery goes below 10V, you will have to trick the charger with another 12V power supply connected to the battery, so the charger detects more than 10V and then starts to charge the battery. Most of these chargers have this glitch.

[caphair]

Re: Harbor Freight car battery chargers any good?

So other than that you think it’s a good enough charger? Would other cheaper ones from HF be just as good? I mainly need one to maintain a charge as sometimes the car isn’t driven for over a week or more

[televizora]

Re: Harbor Freight car battery chargers any good?

This is generic charger, sold under many different names. Many stores sell them under different brands, including Lidl, Praktiker and etc. They are SMPS based chargers with control electronics.
I have similar one. Their disadvantage is that if the battery is heavily discharged, the charger will refuse to charge it. Because of the automatic 6/12V sense. This means that if you have 12v battery, which was drained because of leakage currents in your car to 5-6-7V, the charger will refuse to charge it, because it doesn't know whether it is heavily discharged 12V battery of fully charged 6V battery. Not to mention that this is also done in order for the end users not to try to charge damaged batteries, which can lead to even explosion of the battery,
There is way around this. Just use 12V PSU from some device. Connect the charger, then connect the PSU to the terminals of the battery/while observing the correct polarity/ and then you can trick the charger to start charging. After it has started charging, it will not perform the start charging check again and will charge even completely depleted battery. Use this way around only if you are sure that you have a known good, but depleted battery. Charging damaged, deformed or leaking batteries is not a good idea.
Also, if your battery is worn out and just cant get to the maximum cell voltage, the charger WILL try to charge it to the maximum voltage no matter what. This can lead to acid inside the cells starting to boil, which means that hydrogen is released, which is bad. Also, the battery will heat up. As with all chargers that have shut off when the battery is fully charged, you can't rely on this feature and charge the battery without any supervision whatsoever.
If you hear intensive electrolyte "boiling" or "bubbling" inside the battery or the battery starts to heat up to unacceptable levels, disconnect the charger immediately.

[caphair]

I was gifted a $50 HF gift card and could use a battery charger. Just not sure if the HF brands are any good.

Anyone bought/use any they can recommend?

Out of their selection and reviews was contemplating this one:
https://www.harborfreight.com/automo...ner-63350.html