Round Jack Plugs

[rotrax]

Hi, I know some on here are electrical whiz kids and are familiar with parts.

I need to run a remote charging lead for my Bluetti 180 Power Station. The supplied lead is barely 60cm long, I need 6-7 metres.

The supplied lead has a conventional looking round DC Jack Plug, but for an 8mm socket. I can only find 5,5mm ones. It needs to be rated for a max of 10 Amps.

Anyone have a source?

TIA. If I cant find one, I can, of course extend the old one, but would prefer not too.

 

[justanothersailboat]

Is it 7.9mm rather than 8mm - that seems to be a size that does exist...

 

[penberth3]

Hi, I know some on here are electrical whiz kids and are familiar with parts.

I need to run a remote charging lead for my Bluetti 180 Power Station. The supplied lead is barely 60cm long, I need 6-7 metres.

The supplied lead has a conventional looking round DC Jack Plug, but for an 8mm socket. I can only find 5,5mm ones. It needs to be rated for a max of 10 Amps.

Anyone have a source?

TIA. If I cant find one, I can, of course extend the old one, but would prefer not too.

Could it be a Hella or Bulgin type, or something like that?

 

[AngusMcDoon]

Product – Lumberg

You need to check the inner pin diameter. If suitable Farnell have it.

https://uk.farnell.com/lumberg/1636-07/power-entry-plug-10a-20vdc-cable/dp/2523616

It's also known as a DC7909 plug by Chinese suppliers.

I had the same issue when using the power ports on my Jackery power bank - they put sockets on that require plugs that are hard to find.

 

[LittleSister]

I think confusion is arising because Rotax in mistaken in thinking it's a jack plug.

I suspect what he's after is a DC7909 plug on an extension lead with a DC7909 socket on the other end.

DC7909 plug


Jack Plug

 

[LittleSister]

Example extension lead (other brands/lengths/suppliers available):
3M Solar Panel Adapter, DC 8mm Female to Male Connector Extension Cable for Solar Generator Power Station: Amazon.co.uk: Electronics & Photo

 

[AngusMcDoon]

I think confusion is arising because Rotax in mistaken in thinking it's a jack plug.

Commonly mistakenly called jack plugs. Proper name is barrel connector.

 

[AngusMcDoon]

Example extension lead (other brands/lrengths/suyppliers available):
3M Solar Panel Adapter, DC 8mm Female to Male Connector Extension Cable for Solar Generator Power Station: Amazon.co.uk: Electronics & Photo

That looks like 2 of those will be a cheaper easier solution than my Lumberg plug and making a custom cable as Farnell are expensive and the cable will need to be bought as well.

 

[LittleSister]

Commonly mistakenly called jack plugs. Proper name is barrel connector.

No. This is a barrel connector.

 

[mikefleetwood]

No. This is a barrel connector.

View attachment 207734

Ah... that would be a cask connector, not to be confused with a keg connector

 

[rotrax]

That looks like 2 of those will be a cheaper easier solution than my Lumberg plug and making a custom cable as Farnell are expensive and the cable will need to be bought as well.

Thank you-that might well be the answer. I will need two, as the power station will be some distance from the most suitable charging source.

Appeciate all the help-this really is a useful forum!

 

[wonkywinch]

How about cutting the lead and splicing in a longer new one, preserving the original connector?

 

[rotrax]

How about cutting the lead and splicing in a longer new one, preserving the original connector?

That was the option could I not find anything suitable.

Thanks to Little Sister, post #6, It looks like I can get the ends and length I need.

Thanks guys-now I know they what they are called, thanks to the forum, thins will be easier in future.

 

[AngusMcDoon]

Thank you-that might well be the answer.

For those here with long memories, I think that's a Lakesailoring.

 

[Boater Sam]

Barrel connectors, AKA coaxial connectors, come in a bewildering array of sizes.
See Coaxial power connector - Wikipedia

You need to be sure that you know the size of the centre pin, which usually but not always, is the + connection. The way to measure that pin size is by using small twist drills in the center socket of the plug end until you find the one that fits.

 

[billskip]

How about cutting the lead and splicing in a longer new one, preserving the original connector?

One needs to think about that,
The extension cable may result in volts drop, or risk of overheating, depending on the output demands, also even with a new cable, size needs to be considered, and will the cable then actually fit the connector?

 

[rotrax]

One needs to think about that,
The extension cable may result in volts drop, or risk of overheating, depending on the output demands, also even with a new cable, size needs to be considered, and will the cable then actually fit the connector?

Got that covered. The ordered cable/connectors are rated at twice what I require.

Of course the extra length will result in some power loss, but not enough to be significant. Overheating should not be a problem.

 

[rotrax]

Just an update, cables arrived today, exactly what I needed.

17 Quid delivered!

Result!