Bought a new Dell laptop. How to reuse old power supply of old laptop (also a Dell)?

[JEDI]

i just bought a refurbed Dell Latitude 3379 (i5-6xxx) laptop ($250) because i wanted touchscreen.
my old laptop was a Dell Latitude 5250 (i3-5xxx).

unfortunately, the power supply connector of the new laptop is a smaller in diameter than the old laptop's power supply.

i have 3 power supplies for the old laptop. (home, travel, parents place)
i dont want to buy 2 more power supplies.

Is there an adapter i can buy?
if so, what? link?

Thx

 

[fire400]

Buy Dell OEM, even used is better than a new aftermarket design

Dell Latitude 13 3379 genuine cords on eBay for less than ~$20

An adapter isn't even guaranteed to have OEM chip-to-chip communication and not to mention you want to 45w instead of 65w if that's what your laptop was originally built for

 

[DCookSta24]

You can get a barrel adapter to go from 7.4mm to 4.5mm. I have never tried to use of these adapters, and as stated above your current power supply may not be powerful enough for the new laptop. There also might be communication issues between the power supply and the laptop. It's worth a look at the reviews at least.

Amazon.com: Dell 7.4mm to 4.5mm Dongle Dc Power Converter Cable for D5G6M, 0D5G6M, 57J49, 331-9319 for Dell M3800 XPS 12 13 15 5930 18 1810 1820 Inspiron 11 13 14 15 17: Computers & Accessories

 

[JEDI]

You can get a barrel adapter to go from 7.4mm to 4.5mm. I have never tried to use of these adapters, and as stated above your current power supply may not be powerful enough for the new laptop. There also might be communication issues between the power supply and the laptop. It's worth a look at the reviews at least.

Amazon.com: Dell 7.4mm to 4.5mm Dongle Dc Power Converter Cable for D5G6M, 0D5G6M, 57J49, 331-9319 for Dell M3800 XPS 12 13 15 5930 18 1810 1820 Inspiron 11 13 14 15 17: Computers & Accessories

old power supply is 65w.
new is 45w.

will i be burning out the new laptop by pushing too much power while charging?

edit:
dell says no problem in using higher watt power supplies:

Can I use 65W or 90W instead of 45W charger for Inspiron3567 | DELL Technologies

Actually I have lost my 45W charger for my Inspiron 3567, but my friend has both 65W and 90W (Dell Original) charger. So, I was worry if it will affect my laptop gradually and if the batt...

www.dell.com

 

[ElFenix]

barrel adapter is fine. i prefer the 65 watt for its built in cable management. power supplies are always rated by max capacity and only supply what the parts actually draw (otherwise everybodys desktops that draw 50 watts at idle, 250 at load, and have an 800 watt platinum power supply would explode). just have to match the voltage.

 

[JEDI]

barrel adapter is fine. i prefer the 65 watt for its built in cable management. power supplies are always rated by max capacity and only supply what the parts actually draw (otherwise everybodys desktops that draw 50 watts at idle, 250 at load, and have an 800 watt platinum power supply would explode). just have to match the voltage.

ive been reading the 7.4mm to 4.5mm adapter wont charge the dell battery. (but it will charge battery in a HP laptop.)

any work around for this?

 

[ElFenix]

seems like the linked one is a dell part, dunno why it would work with an HP but not dell. did you click through to a different adapter?

 

[JEDI]

seems like the linked one is a dell part, dunno why it would work with an HP but not dell. did you click through to a different adapter?

no.. just read a review that it wouldnt charge his dell battery

 

[sdifox]

Err did you look at the voltage? They may not be the same.

 

[JEDI]

Err did you look at the voltage? They may not be the same.

both are 19v

 

[SamMaster]

As an ex-Dell on-site repair guy, I can attest that using 3rd party adapters can be very hit-or-miss. The small pin inside the power connection is what communicates to the laptop the psu wattage. If it doesn't connect properly, the laptop will detect an unknown power adapter and work in low power mode while not charging the battery to protect itself (and will warn you in POST).

The small connectors are newer then the bigger ones (they used that one for over a decade now) and I mostly found them in consumer-grade, entry-grade, and low power laptops.

Your best option is to get a "new" Dell OEM adapter. You can shop around and find some for not much (I did so for work last year).

As a side note, Dell laptops can work with their 45w, 65w, or 90w adapters (some even 120w+ but not as common), as long as it is not a beefy gaming/workstation laptop. At worse it will complain the power adapter isn't strong enough and will go in low power mode.

 

[ElFenix]

if you're concerned about 3rd party you can get that straight from dell

Dell Cable - DC Power Dongle | Dell USA

With connectors from 7.4mm to 4.5mm, this DC Power Dongle is specifically designed for your ultra-slim XPS system. It is light-weight and easy to carry. It allows you to power up your XPS 12 / XPS 13 / XPS 13 MLK systems with Dell's traditional power adapters with 7.4mm connector. You can pack...

www.dell.com