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I wanted a charger for my X5105 instead of using the Samlex SEC 1223 for my IC-706.? I ordered this from Amazon:

POWSEED 45W Universal AC Power Adapter DC 5V 6V 7.5V 9V 12V 13.5V 15V Charger for Household Electronics Routers CCTV IP Cameras Speaker USB Hub Tablet LED Strips, Multi Voltage Supply Cord 1a 2a 3a
Brand: Powseed
4.3 out of 5 stars 471 ratings
| 101 answered questions
Price: ??? $16.50 & FREE Shipping on orders over $25.00 shipped by Amazon.
ASIN ??? B01MT5WVCG
Item model number ??? PA-30450H-ZMX

It is rated at 3 amps output and has switchable output voltages.? With its switch set to 13.5 volts, the X5105 reads 13,800 mV and the battery seems to charge just as fast as with the 20 amp supply.? It has a cord with the AC plug, so it doesn't block part of an outlet strip, and a separate, detachable cord for the radio connector.? It comes with several adapter/connector tips for the end of the charging cable, and the 5.5x2.5 mm. (the largest) fits the X5105.

It works out well and I'm glad that I chose it.? I hope this info will help other X5105 users.

Doug, K8RFT

Thanks for that info.
--
Brian
K0FBS

I found more info that may help people choose a charger.? I had already noticed that it takes a long time to recharge my battery after very light use, so I know the charging current is not very high.? And the factory manual says "Current load capacity of DC power supply shall be 3A at least."
That must be for running the radio at full power, using external power.

Today while looking for charging rate info on the Web, I found a great youtube video.

Youtube video by Enzo, IW7DMH

Xiegu X5105 - Power/Current/SWR measurement - ATU Test
https://www.youtube.com/watch?v=rk4snHs3A0I

Current draw test (50 ohm load)

0.36 A.??? off & charging
0.54 A.??? Receiving
1.01 A.??? TX 0.5 W.
1.10 A.??? TX 1.0 W.
1.19 A.??? TX 1.5 W.
1.28 A.??? TX 2.0 W.
1.37 A.??? TX 2.5 w.
1.45 A.??? TX 3.0 w.
1.55 A.??? TX 3.5 W.
1.64 A.??? TX 4.0 W.
1.73 A.??? TX 4.5 W.
1.82 A.??? TX 5.0 W.

Also he tests actual power output per band, while set at 5.0 W.
and SWR meter tests, plus autotuner tests at 500 ohm load on 160 and 20 meters.?
The ATU matched a 10:1 load to 1.5:1 or better SWR.

He has his camera on, showing the radio, power and digital current meters for all the tests.

I hope this will help prospective X5105 buyers and also any new users.

Doug, K8RFT

I have a MFJ-4230DMP 13.8v 30a power supply. ?Is this ok to operate the X5105 as an external power source and charge the internal battery in the X5105??

the 30A MFJ is all I have at the moment ?

?

It will be fine.
--
Doug, K8RFT

Thanks Doug,
I actually need to correct my question but I think you understood the question.?

I originally asked “is it ok to operate the X5105 at an external power source”
I meant to ask if it was ok to operate the X5105 while using the MFJ3240DMP as an external power source.?

So, I received the X5105 on Saturday, the coax and a new multi band dipole came yesterday, the small 3.2oz CW paddles come on Wednesday but the MFJ power supply, not sure when that will arrive. I placed the order on Friday, called them yesterday to confirm the order and they told me “they have my order, the item is in stock and should be shipped out by the end of the week” I was like what, the end of the week? Hi hi, like I needed it last week. Oh well. In the meantime, we are in the a snow storm here in up state New York and it’s a great time to hang an antenna, I think. Lol.?

73?

On Tue, Feb 2, 2021 at 08:05 AM, <justinandyazny@...> wrote:

I meant to ask if it was ok to operate the X5105 while using the MFJ3240DMP as an external power source.?

?

The radio doesn't care much about the source, just the voltage is within factory specs and the current capability is high enough.
I suppose there could be problems if the supply had a LOT of noise in its output, but there's no way to know that in advance (except maybe in reviews).
The (earlier version)X5105 manual from MFJ says "13..8 vdc +/- 15% (9-15 vdc); Current: RX, 500 mA peak, TX 2.5 A. peak."
There's a "Charging" setting referred to in the manuals, too.? In "Charge" mode, you should not transmit while charging.? ?The manual says "The total current could exceed the capacity of the radio's power management components."? (It didn't say what the other mode is!)
?
--
Doug, K8RFT

On Tue, Feb 2, 2021 at 08:05 AM, <justinandyazny@...> wrote:

snow storm here in up state New York and it’s a great time to hang an antenna, I think. Lol.?

It sounds like you needed to order one of these, too -->

( 143554977275 )

from eBay.? (But you would have needed to really plan ahead - delivery from Taiwan is estimated at 3 to 8 weeks!? I did order one, though, and it worked very well in my initial tests.? As long as I connected a counterpoise wire too.

?
It's a telescoping whip with BNC connector and loading coil for 20 meters.? Mounts right on the radio, and you have a 20 M. walkie-talkie.
--
Doug, K8RFT