Positive on first. When taking off, it's (Neg) off first.

Here's an experiment rarely seen on KZfaq: 1. Jump start the car. 2. After a very short period of time (seconds), turn the ignition off. The car's battery will likely still be dead, as the alternator hasn't been given sufficient time to recharge it. 3. Attempt to jump start the car again off the same jump-start device, without attempting to recharge the device. 4. Repeat steps 2 and 3 to determine exactly how many jump starts the device can perform before it fails.

Hmm no luck for me. When I clamp, it doesn’t recognize it’s connected to a battery.

This is a good video of showing you how NOT to jump start your battery.

Always connect the positive cable (red) first, then the negative (black). I noticed this was not done this way in the video. Otherwise, good information.

My type S didn’t work. However It worked for me after I connected the red cable first before the black cable. You did the opposite. My Type S is very particular lol. Over all great video.

TypeS has the best customer service

The instructions say to attach the red/positive clamp 1st.

I have much heavier ones but this one is more convenient and only has to start a Honda Element so should be more then enough.

Costco $59.99 today. Good deal!

you have 30 seconds to start the car from the time you connect the cables. Also you must connect red first and then black

Great video man I appreciate it I just got mine and this video helped me a lot 👍🏾

You were lucky to get it started. This type of charger is for the most part junk sold by companies such as Costco or Walmart. Problem is people don't know such boosters don't work until the day they need them.

Something everyone should have thanks for sharing

Thanks for the post....you put my mind at ease!

Those cable leads must never touch each other, he was lucky he didn't short out that charger.

you should always connect the positive first

great video. thank you. I only wish I would see clearly where the negative -black cable is atached. Is the negative black connection on the battery?

Instrucciones says RED cable first then BLACK … why?

anyone know how to reset this? my grandpa is asking me

This charges my Honda element no problem but when I try to jump my Infiniti ex35 is keeps saying battery protected unplug and start over while my car honks continuously. Why would it do that? I tried numerous times and it still won’t work. I’m thinking it doesn’t work on the bigger engines maybe

Good video. Thanks

I realize this is a 2 year old video, but can I ask you one serious question. In the end, it appeared that although you had a full/100% charge on the readout of the Type S, in the last couple of seconds, was the readout then at 00%? Did those three hard pulls drain that little battery?

Battery protected is annoying .. start showing on one car but now shows up all the F . time

I also got the same error message (Battery protected Unplug Start over) I tried several times but no luck. Could it be defective?

do you have to change the battery when the battery is dead?

Sorry but won’t start a 5.7 ltr GMC. Not even a click on the starter. Junk.

Can this be used as a portable charger for a phone

at 75% you should try it even better with 50% to simulate in real life

After using this thing my engine check light came on 😑

It is light weight means lower capacity. This is not nice! Few ounces heavier with more internal batteries translates in a heavy duty battery that will start heavy engines from the first time and less likely to trigger battery protection. Light does not always mean better.