GOOLOO S4 Smart Battery Charger/ Maintainer/Tender. Charging a variety of 12v and 6v batteries plus!

The GOOLOO 4 amp-hour Smart Battery Charger/ Maintainer can care and trickle-maintain a variety of 12v and 6v vehicle batteries. It can also act as a 12v power source to keep memory and settings during battery swaps and disconnects.
The GOOLOO worked wonders on my cold weather test platform 84 Toyota Hilux. This is a must-have tool.
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[@felixf5211]

I like this! I use a Battery Tender; my serious car lives in the garage during the salt season. It comes in a big-ish metal box. No voltage display, unfortunately. Doesn't charge as quickly as the Gooloo, but has been functionally reliable for the past 16 years. I'll take a look at this product.

[@BLASTIC0]

Hey Doc… I left a comment before about the Craftsman Professional Stubby Screwdrivers…. Well, i just uploaded a short clip to show what I am talking about. Given what you like about the screwdrivers in your videos, I think you would really love this. I don’t think they make them anymore, I got them at Sears about 10-12 years ago.

[@yubi4291]

Some important features for this battery tender were left out - firstly, this model has 'de-sulfation' capability; secondly, the O-ring extension is used mainly for extending the SAE cable to access the battery terminals from outside and to avoid opening the hood every time one needs to charge the battery.

[@Toyotas_n__Tools]

You should do the emission delete on that 22r it REALLY wakes up the engine a lot! Best thing I did to my 22r, made it quite peppy.

[@akaadamrg]

Because pep > laws/health 🙄

[@blake_229]

So, I'm in a debate between the (S) 4, 6, or 10 Amp. Can you please explain why you would want the 4 or 6 or 10.

[@jstrat121]

I have a similar( virtually same) tender . The manual says to connect ground( neg) clamp to “ chassis ground” when battery is installed in vehicle and connected. I know…I know…” ground is ground”. Just sayin’ ….thats what the manual says.

[@jasoncook5907]

Doc, take a look at the Gooloo GP4000. It can actually start vehicles with dead batteries.

[@fortunatedad7695]

Have you ever checked the health of the battery after charging it with unit? The reason why I ask is I had an energizer charger that works the same as this but after I would charge my battery with it I put my battery tester on and it read that I had a full charge but the health was depleted and my tester recommended I replace the battery. Well this was a brand new battery, but as soon as I ran the car for 15 mins or so the health was back up to 100%. I took the energizer back to Costco and ordered the gooloo as I think I must have got a faulty unit.

[@fatahfadhel8830]

Can i chargar direct on the car

[@georgeferlazzo7936]

Hello again Doc Thank you for another Great Video. If I understood what you said. This device doesn't have a battery to jump a dead battery. Correct or not?

[@lastbesttool]

Correct. This device is just a battery charger/tender. I will highlight other jump starters in the future. I've shown some in the past.

[@tylerfirlotte6920]

Hey doc if you use your vintage stuff in the garage where do you use the new stuff ? Ij the house when fixing your purse? Just teasing doc i fo the same

[@lastbesttool]

The garage stuff gets borrowed, misplaced, and abused and misused. I’ll carry a bag of the good stuff out to the garage for big or long term projects.

[@larryborkstrom3580]

I'm going to step on the 3rd rail it's got to be better than a Norco but I use a jnc770 I know how to hook one up without blowing up a battery jump pack or frying a computer or electric in the vehicle

[@fatahfadhel8830]

Can i used directin car when i programer ecu

[@MaikSchulze-iq3sl]

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