Unbelievably Slow Charging Sources

[ForestTruck]

You need a special high power USB port to charge and run a laptop. They only exist with USB 3.0 ports, and above. A 2.1A 5V USB port only can supply 10 Watts. Check how much power your laptop power supply provides. Likely much more than 10 Watts. The 250 watt 120V outlet is the correct way to power a laptop.

 

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[rick25s]

The gm ports are just them being as cheap as possible- they give a crap less about your phone battery life.

Where did anybody say GM designed anything with battery life in mind? You built a false narrative there.

Problem: He doesn't have enough power due to under-powered USB outlets.
Solution: He needs a new circuit to handle all the power he needs.

Do you recommend any specific "easy to install items for charging sources"?

 

[ForestTruck]

I added a 12V 10A outlet to my AT4X. You can access the passenger side fuse box by opening the door and removing the panel at the end of dash. Then use a power tap to grab power from the fuse box. It requires no cutting or modifications. I used this, purchased from the river named Web retailer. "Gebildet 3 pcs 12V-24V Add-a-Circuit Micro2 Fuse Tap".

 

[ForestTruck]

Also, grab one these on sale. It's easy to mount under the passenger side dash.

https://www.amazon.com/Lastest%E3%80%91-Charger-AlfredDireck-Waterproof-Motorcycle/dp/B08SQCBC2C/ref=sr_1_3?crid=HAQBQEHT1FHR&keywords=high%2Bpower%2Busb%2Bcharging%2Bport%2B12V&qid=1696952173&sprefix=high%2Bpower%2Busb%2Bcharging%2Bport%2B12v%2Caps%2C154&sr=8-3&th=1

 

[ForestTruck]

DO NOT use fuse taps on newer vehicles.

That's a good point. I used a voltmeter to find the right fuse to tap and did a few calculations. But I'm an EE.

 

[phobby]

That's a good point. I used a voltmeter to find the right fuse to tap and did a few calculations. But I'm an EE.

If you know what you are doing and make sure a fuse doesn’t have sensitive components on it. Fuses vary by year and model for locations now. Being that GM removed the 12v outlets, the go to accessory fuse might not exist.

Also buying the exact add-a-circuit for the fuse you choose and there are a lot to choose from. Many people spread the contacts with the wrong one and have issues down the road with poor or loose fuse connections.

Going to the battery with your own in-line fuse is the safest, cheapest, and easiest option.

 

[ForestTruck]

I'll add that I knew which relay I was using and made sure that I didn't overload it.

 

[rick25s]

Third Reply. Someone said “Phone chargers are slow for a reason. Fast chargers destroy lithium ion batteries in phones. Charging a battery is like filling a glass with Pepsi: Pour slow and you can fill the glass. Pouring fast destabilizes the product and nothing settles in. ”

That was an isolated comment about the reason "Phone Chargers", like apple OEM ones you plug into the wall of your house, are slow charging instead of cheap 10-15 minute fast chargers you find at a gas station. It was an informational post on why you should not fast-charge. Nothing to do with GM, or the problem the OP is having.

 

[rick25s]

Going to the battery with your own in-line fuse is the safest, cheapest, and easiest option.

1: The comment above is the best advise you can get, for the problem.
2: Friends don't let friends use Fuse Taps.

 

[Stuart]

Threads tend to be more entertaining when folks are pissing for distance.

 

[ForestTruck]

Wrong again. Why would apple give you a fast charger for free when they sell a fast charger upgrade. Gas station chargers are not fast chargers, just junk that claims faster charging. There’s nothing informational about that post to current lithium batteries. The circuitry controls all of the charging factors of the battery and Apple isn’t going to allow a charging rate that damages it. In general the Engineered design specifications of everything have a safety factor times 3.

I'll bite. I design power supply and charger circuits for a living. I've seen many Li-ion charge-discharge graphs. The max discharge rate of a battery is defined as C. Charging a battery is usually based on C. Typical charge rates vary from 0.2C to C with 0.5C being the most common. Most batteries can be charged at less than their maximum charge rate, and some batteries have a rapid charge rate. With all lithium batteries, higher charge rates will reduce life. How much depends on many factors. Same with the batteries in electric cars. Fast charging reduces battery life. Phones taper the charging to minimize the damage. So do what you want. Do not charge your battery at 3 times the recommend charge rate. That can start a fire.

 

[Ohiost90]

...,snip.... That can start a fire.

on a related note..... lithium fires are nasty. My neighbor's house burnt halfway down due to a Li battery fire.

Hop on the U tubes and google Telsa fires or Chevy bolt fires.

 

[rick25s]

Wrong again. Why would apple give you a fast charger for free when they sell a fast charger upgrade. Gas station chargers are not fast chargers, just junk that claims faster charging. There’s nothing informational about that post to current lithium batteries. The circuitry controls all of the charging factors of the battery and Apple isn’t going to allow a charging rate that damages it. In general the Engineered design specifications of everything have a safety factor times 3.

You are ripe with wrong assumptions, especially "Apple isn't going to allow....". I'm a software engineer, and deal with Apple, Google, Microsoft, etc programming frameworks all the time. We were forced into mobile device hardware and software integration expertise many years ago, and also forced into so much continuing education on it that it severely eats into our actual productivity time. Battery life and charging habits are part of the education plan we give to our physicians and staff, who need their phones 24/7.

 

[rick25s]

I'll bite. I design power supply and charger circuits for a living. I've seen many Li-ion charge-discharge graphs. The max discharge rate of a battery is defined as C. Charging a battery is usually based on C. Typical charge rates vary from 0.2C to C with 0.5C being the most common. Most batteries can be charged at less than their maximum charge rate, and some batteries have a rapid charge rate. With all lithium batteries, higher charge rates will reduce life. How much depends on many factors. Same with the batteries in electric cars. Fast charging reduces battery life. Phones taper the charging to minimize the damage. So do what you want. Do not charge your battery at 3 times the recommend charge rate. That can start a fire.

Thank you for that. We've actually paid a ton of money to mobile device consultants to tell us exactly that.

When developing healthcare mobile apps, we fought for years trying to understand battery performance. Getting a better understanding of that makes everything better. You wouldn't believe how much the surgeons and staff use their phones in the OR's. Audio and video consults, information referencing, etc...stuff that they don't use all the 48-84" we have for them all over the place for.....

 

[rick25s]

Seriously? Battery life and charging habits can be controlled or manipulated by the phone itself. where minimal user interface issues can occur. A 100w charger doesn’t make a phone blow up in your face, the phone regulates input from port to the battery.

Sounds like your company is dumb enough to spend loads of money in training for staff that will never listen instead of a simple program? If Apple, Samsung, Microsoft- wanted 1 watt of charging max for life and safety- it would be 1 watt in the programming.

You are making false narratives due to no understanding 1) of the circumstances, 2) the realities of enterprise application, and 3) a gross averseness to learn from the real world experience of professionals.

Quit with the exaggerations, like 100w charging. Nobody said anything like that. You manufactured that.

There is a phrase in leadership education to keeps us from going down your road: "Always be aware that you don't know what you don't know". Figure that one out on your own. I'm not carrying your water.

You know nothing about my company. All our results are measurable. Next time we talk about >75% monetary savings realization due to the 5 minute battery life eLearning module, I'll blurt out "nuh uh, phobby say Apple know best, do whatever you want". That's what you're doing right now.

Try learning. Digging in on assumptions and what you 'think' is fact, makes that person the person everybody rolls their eye and walks away from. Pretty soon, nobody listens to anything you say.