Thanks again for all your assistance on my NOCO Boost X GBX45...

Excellent video. Just purchased this unit and obviously didn't read the manual and would have tried to charge this with a 30 watt PD brick. Getting a 65 watt PD brick right now. Thanks. Keep up the good work, turtle and mock neck!

Good video! Here are few things that I've learned from measuring dozens of booster packs. These may be useful to viewers about the discrepancy between advertised and measured capacity: 1) Watt-hours (Wh) is what matters. That's total energy. Amp-hours (Ah) depends on the battery voltage, so it doesn't tell the whole story. I'm glad this video included that information! 2) Advertised specs are for the battery cells themselves, without any circuitry. It's fine to measure the capacity via USB-C output, but keep in mind that's going through a buck/boost converter which consumes some energy. 3) Capacity depends on the discharge rate. Fast discharge (higher current) is less efficient, and will result in lower measured capacity. This is less of an issue with Lithium chemistries than Lead Acid, but still an important factor. 4) Many battery packs and power banks do not charge the battery up to maximum capacity, since that decreases their lifespan. I was just inside a Ryobi 40V pack, with 4.2V max cells, but the charger stops at 4.1V per cell. On the flip side, they will often cut off the discharge early for the same reason. 5) To truly measure capacity, like the manufactures do, you would need to manually charge each cell to full capacity, then immediately discharge directly from the battery at an extremely slow rate to avoid any heat losses, all the way down the maximum discharge voltage. Doing this repeatedly will limit cycles, but that's how you get the maximum capacity numbers they want to advertise! So 23Wh measured via USB-C output at 1 amp for a 31Wh advertised pack is pretty reasonable.

Thank you You revealed the truth and illuminated the way for travelers👌👍

Great Video Thank You

Thank you, I tried to charge the same NOCO GBX45 unit (new) with the ANKER Series 737 120W charger (new) but it didn’t fast charge the unit and the light didn’t glow… should the unit be fully dead before charging it!!

I just bought the GBX45 and I get the fast charge indicator using an Anker 45w charger and it is about an hour to charge.

The charger I am using is the Anker Nano 2 45 W and it does indeed illuminate the fast charge light and the charging time was just over 1 hour.

Hi there , good video bro 😎, can U make another video using this GBX45 noco to see if u can really start a 6.5 gas liter engine or a 5.0 liter diesel truck, that would b a very interesting 🤨 video , if u can find a friend or family member that can help you to gather some cars 🚘 or trucks 🛻 to find out , just saying , keep up the good 👍 work

Is their an equivalent cigarette lighter that can charge this with PD in the car?

All the power on the internet and ONLY on this video at 5:48 does anyone tell me how long the battery is supposed to last. THANK YOU!!!

Where the heck did you get that shirt?

Just buy the Apple 70 watt Type C charger...Yeah it's $60.00 US but it does charge these super fast....

Mine came without the bag