Solved Can I charge a Dell Inspiron 15 3535 with 19V or 20V generic charger?

kelper said:

I want to charge a Dell laptop using a universal laptop charger

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Porthos said:

I did not read the whole topic, but Dells like genuine OEM adapters. There are chips in them that the laptop detects and will not charge if the adapter lacks one.

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Yes, it's on the centre pin and uses the 1-Wire protocol. The power is on the outer and inner sleeve.

Genuine Dell laptop power supplies use the 1-Wire protocol to send data via the third wire to the laptop computer about power, current and voltage ratings. The laptop will then refuse charging if the adapter does not meet requirements.

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Porthos said:

I did not read the whole topic, but Dells like genuine OEM adapters. There are chips in them that the laptop detects and will not charge if the adapter lacks one.

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I think that is only true when the laptop power socket is three pin. His is two pin

Evidently, I was wrong!

Thanks for the replies. My brother lives in a terrace so has neighbours either side. He has a generator, but noise is an issue. I use a motorcycle battery without a motorcycle, a universal laptop charger and the battery is 7Ah. I get at least seven hours internet. For anyone buying a small generator, remember that motors draw a lot of current when starting and the generator should be twice as powerful as the motor as a minimum.

FreeBooter said:

You can have any wattage but not Volt so if the charger is 19V you can have a new charger that 19 Volt but have any wattage.

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This is not correct. The charger needs to at least match the power required by the laptop and the voltage has to be close, but not exact.

antspants said:

Clever.
Question, Would you have the MC running whilst charging?

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No! It's only a short term solution and I don't have a motorcycle, just the battery.

To remove any confusion. My brother wants two solutions. One for his laptop and one for his router. My router solution works well. But a 7Ah battery wont power a laptop for long. He will end up buying two universal chargers where the voltage output is set manually. Of these, I can't find any that output 19.5V, hence my post.

kelper said:

To remove any confusion. My brother wants two solutions. One for his laptop and one for his router. My router solution works well. But a 7Ah battery wont power a laptop for long. He will end up buying two universal chargers where the voltage output is set manually. Of these, I can't find any that output 19.5V, hence my post.

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Not sure if helpful, you lost me at “My brother”

I’ll stop at this because A) I don’t get electronics at all and B) I don’t want to clutter your thread with useless options?

I don't think a 12Vdc to 240Vac inverter is a good idea as it wastes energy twice. Why create an AC source just to use the OEM charger to turn it back to DC?

antspants said:

Not sure if helpful, you lost me at “My brother”

https://www.reddit.com/r/batteries/comments/fcu61g/12v_to_195v_highend_laptop_charging_from_a

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Read post 1

kelper said:

In case of a mains power outage, I want to charge a Dell laptop using a universal laptop charger with a 12V input from a motorcycle battery. But this has 19V or 20V but no 19.5V as used by Dell.

Would either voltage be 'close enough'? It's my brother's laptop.

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You wont have any issues running that device.

Porthos said:

I did not read the whole topic, but Dells like genuine OEM adapters. There are chips in them that the laptop detects and will not charge if the adapter lacks one.

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There are many chargers on the market that claim Dell compatibility. But, yes - any charger probably needs a three-pin barrel plug to persuade the Dell to accept charge. His is 65W so most will suffice. He will probably use Amazon in case it doesn't work properly.

Spunk said:

Why not get a proper power adapter for your Dell laptop?
https://www.amazon.co.uk/s?k=Dell+Inspiron+15+3535+charger&crid=2HB5E53J5JXHG&sprefix=dell+inspiron+15+3535+charger,aps,208&ref=nb_sb_noss_1

A Universal Charger will power the laptop up enough to power it on and run it but it will not recharge the battery.

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What use would your suggestion be in a power cut? I guess you did not read posr #1?

antspants said:

I’ll stop at this because A) I don’t get electronics at all and B) I don’t want to clutter your thread with useless options?

https://www.amazon.com.au/Charger-12V-24V-Adapter-Soundbar-Motorhome/dp/B099DYY2FH

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They are better than some of the suggestions!

kelper said:

They are better than some of the suggestions!

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Winging it lol

You would need something like this with it for the battery to the charger?

antspants said:

Winging it lol

You would need something like this with it for the battery to the charger?

https://www.amazon.com.au/Battery-Cigarette-Lighter-Adapter-Extension/dp/B08B4S9X3B

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Absolutely, but I have one already and suggested my brother get two. Some of those have spade connectors that would pull off the crocs and go straight onto the m/c battery.

My very old HP Mini requires 19.5V but charges well at 19V with my Maplins universal charger, so I'll mark this thread as solved.

kelper said:

This is not correct. The charger needs to at least match the power required by the laptop and the voltage has to be close, but not exact.

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You are not helping anyone with your so-called correction, a laptop is designed to work with a certain voltage. When the voltage is too high or too low, it can damage the device. That's why it's important that the replacement charger has the same output voltage as the original charger. When you say voltage can be closer how close you don't mention as maybe OP or even i don't know this close means i stay with safe option and replace the charger same voltage as the replaced adapter or lets OP know that the 5% higher voltage is safe but again risky move if you are not sure what this means.

@FreeBooter

I don't mean to contradict you, but a 65 Watt charger will not keep a 90W laptop running when it's switched on, so the wattage does matter.

May I politely suggest that you post in your own langauge and add a translation using Google Translate?

You said, and I quote,

"You can have any wattage but not Volt so if the charger is 19V you can have a new charger that 19 Volt but have any wattage."

kelper said:

@FreeBooter

I don't mean to contradict you, but a 65 Watt charger will not keep a 90W laptop running when it's switched on, so the wattage does matter.

May I politely suggest that you post in your own langauge and add a translation using Google Translate?

You said, and I quote,

"You can have any wattage but not Volt so if the charger is 19V you can have a new charger that 19 Volt but have any wattage."

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What are you on about, i already told you stay safe and stick with same Voltage, but Wattage can be any or higher at my post #2 maybe you are the one stick with your understanding of reading English language.

Stop being racist telling me to stick with my kind, what language is this i'm typing English.

FreeBooter said:

Stop being racist telling me to stick with my kind

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That’s not what he said buddy. It’s OK