Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 12-01-2019, 13:44   #16
Registered User
 
Jammer's Avatar

Join Date: Jan 2010
Location: Minneapolis area
Boat: Morgan 250, 25'
Posts: 841
Re: Charging laptop, camera, monitor etc. W/O an inverter?

I have one of these 12v industrial USB/USB C converters and can't say enough good things about it. I charge my phone and my handheld VHF with it, and can charge my laptop if I want. It puts out 45 watts on the USB-C connection, enough to fast charge tablets and laptops.


https://www.amazon.com/gp/product/B077BL3GT4


Doesn't overheat and fold back the power, small, reliable.
__________________

Jammer is offline   Reply With Quote
Old 12-01-2019, 13:50   #17
Registered User

Join Date: Nov 2017
Posts: 86
Re: Charging laptop, camera, monitor etc. W/O an inverter?

Quote:
Originally Posted by scottrgrewe View Post
I understand it’s more efficient to charge these items directly from the battery bank. Buck transformer? It would also help to keep a tidier “charging station” if I could splice everything into 19v source.
Anyone have experience with this?
Lots of good interesting ideas but three critical suggestions.
Inverters are square and pure sine wave. Many of today’s small electronics chargers , particularly acer and some of the new dewalt type chargers do not like square wave a/c power inputs and will fail. Cheap inverters and old inverters are more often square wave.

Tablets/iPads in particular need higher amperage output chargers, or the batteries take a long time and do not top off, thereby shorting life.

Higher voltage may assist speedier charging, but 19v dc on 5v inputs is likely to overcharge if left on charger to long, thereby not very efficient
__________________

boat driver is offline   Reply With Quote
Old 12-01-2019, 14:48   #18
Registered User

Join Date: Jan 2017
Posts: 8,942
Re: Charging laptop, camera, monitor etc. W/O an inverter?

Quote:
Originally Posted by boat driver View Post
Higher voltage may assist speedier charging, but 19v dc on 5v inputs is likely to overcharge if left on charger to long, thereby not very efficient
No one suggested that, very silly idea.

Many if not most laptops use 19V.

Whatever a given device needs, is what you give it.

Obviously USB is a non issue available OTS no knowledge or DIY needed. Same with devices where the mfg makes car adapters available.
john61ct is offline   Reply With Quote
Old 12-01-2019, 15:54   #19
Registered User

Join Date: Mar 2018
Location: New Zealand
Boat: 50’ Bavaria
Posts: 376
Re: Charging laptop, camera, monitor etc. W/O an inverter?

Quote:
Originally Posted by andyful20 View Post
I have an old Dell latitude e6410 running 19v 4.2 amps DCFrom it's converter 230v ac--can't find an adapter from anywhere for it -- for my 12-14v dc asystem. Any suggestions? Apart from using my 300 watt inverter !!!
If the link below works, this is what I'm using. Give it anything from 3 to 35v, output anything from 5 to 45v at 5A. Dial up the voltage you want.

Digital DC-DC Converter Module Boost Step Up Module DC 3V-35V to DC 5V-45V Boost Converter Board 5A
https://s.click.aliexpress.com/e/bJMkV5BK
Tillsbury is offline   Reply With Quote
Old 12-01-2019, 16:55   #20
srt
Registered User

Join Date: Dec 2014
Location: Fremantle
Boat: Beneteau Oceanis 370
Posts: 13
Re: Charging laptop, camera, monitor etc. W/O an inverter?

I am having trouble with 12v to 2 USB outlets causing RF interference. Have anyone else experienced this? When using the USB outlets upsets TV reception. Tried first cigarette lighter adapters, then installed dedicated outlet, both type a problem.
srt is offline   Reply With Quote
Old 12-01-2019, 17:11   #21
Registered User
 
Jammer's Avatar

Join Date: Jan 2010
Location: Minneapolis area
Boat: Morgan 250, 25'
Posts: 841
Re: Charging laptop, camera, monitor etc. W/O an inverter?

Quote:
Originally Posted by srt View Post
I am having trouble with 12v to 2 USB outlets causing RF interference. Have anyone else experienced this? When using the USB outlets upsets TV reception. Tried first cigarette lighter adapters, then installed dedicated outlet, both type a problem.

Common. There are some things to try.


1) A different USB adapter.
2) Put ferrite beads on the 12v in. (over both wires together)

3) Put a capacitor across the 12v in.
4) Put a ferrite bead over the USB cable, close to the adapter.
Jammer is offline   Reply With Quote
Old 12-01-2019, 17:28   #22
Registered User

Join Date: Nov 2010
Location: BC
Boat: O'Day 40
Posts: 422
Re: Charging laptop, camera, monitor etc. W/O an inverter?

Quote:
Originally Posted by andyful20 View Post
I have an old Dell latitude e6410 running 19v 4.2 amps DCFrom it's converter 230v ac--can't find an adapter from anywhere for it -- for my 12-14v dc asystem. Any suggestions? Apart from using my 300 watt inverter !!!
I think your stuck buying one from Dell. Our 2 Dell laptops would only charge from the correct Dell charger. Wouldn't even accept a different Dell charger.
Some bit of software that identifies the charger.

https://www.dell.com/en-ca/shop/acce...546#polaris-pd
This is supposed to work.
__________________
Trying to make new mistakes.
bcboomer is offline   Reply With Quote
Old 12-01-2019, 22:02   #23
Registered User

Join Date: Jun 2012
Posts: 50
Re: Charging laptop, camera, monitor etc. W/O an inverter?

We carry two Apple Macbooks and an iPad mini on board. We have some cigarette lighter 12 outlets around our 31-footer and use an Apple plug-in charger for all the Apple devices. A few other devices (fans, work lamp) plug into these outlets. Other stuff we charge off a small inverter.

Cheers!

Jenn and Terry
__________________
Jenn & Terry
North Conway, New Hampshire
Mahone Bay, Nova Scotia
jen1722terry is offline   Reply With Quote
Old 12-01-2019, 23:28   #24
Registered User

Join Date: Mar 2017
Posts: 17
Re: Charging laptop, camera, monitor etc. W/O an inverter?

Thank you all for the excellent advise!
scottrgrewe is offline   Reply With Quote
Old 13-01-2019, 00:46   #25
registered user
 
HankOnthewater's Avatar

Join Date: Dec 2012
Location: West Australia
Boat: plastic production yacht, suitable for deep blue water ;)
Posts: 478
Re: Charging laptop, camera, monitor etc. W/O an inverter?

here is another solution:
https://www.ebay.com.au/itm/1200W-20...53.m2749.l2648
A voltage converter up and down, up to 20 amps, price under $20. I have a few, each set for a different voltage, work well. One of them powers a small computer 24/7.
__________________
Wishing you all sunny skies above, clear water below, gentle winds behind and a safe port ahead,
and when coming this way check http://www.cruiserswiki.org/wiki/Albany,_Australia
HankOnthewater is offline   Reply With Quote
Old 13-01-2019, 01:23   #26
Registered User

Join Date: Aug 2012
Location: PNW
Boat: Bruce Roberts Ketch 40
Posts: 396
Re: Charging laptop, camera, monitor etc. W/O an inverter?

I have 4 automobile cigarette lighter type 12v charging outlets on my boat.
1 aft cabin, one forward cabin. one in the salon and one in the cockpit. They all run off of the D8 house battery.

So anything you can charge in your car will work on these.
Had one guest run his C pap machine at night on one of them.
You can also get solar chargers for phones et al from Amazon for under $25


https://www.amazon.com/s/ref=nb_sb_s...=2DLCZMA7JE3DE
Maka is offline   Reply With Quote
Old 13-01-2019, 03:31   #27
Registered User

Join Date: Jan 2017
Posts: 8,942
Re: Charging laptop, camera, monitor etc. W/O an inverter?

Make sure to put kill switches on these gadgets, many are vampire draws when unloaded.

Also while you're still fighting the RFI issues
john61ct is offline   Reply With Quote
Old 13-01-2019, 07:57   #28
Registered User
 
SoonerSailor's Avatar

Join Date: Sep 2008
Location: Camden, ME
Boat: A Thistle and a Hallberg-Rassy 36
Posts: 699
Re: Charging laptop, camera, monitor etc. W/O an inverter?

I used this for a 19V supply:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

This feeds an Anderson Powerpole outlet on the panel (like this but with blue instead of red: https://powerwerx.com/panelpole-pane...erpole-housing

Did the same for a 12.0V outlet for the netbook and AA charger. Both have their own on/off switches. Of course you have to fabricate your own Powerpole to computer/accessory cable, but it has worked well for me.
SoonerSailor is offline   Reply With Quote
Old 13-01-2019, 09:30   #29
Registered User
 
SoonerSailor's Avatar

Join Date: Sep 2008
Location: Camden, ME
Boat: A Thistle and a Hallberg-Rassy 36
Posts: 699
Re: Charging laptop, camera, monitor etc. W/O an inverter?

My link above was for the 12.0 Volt supply, but you can also find them for 19 Volts, and for much less than the one in the link.
SoonerSailor is offline   Reply With Quote
Old 13-01-2019, 10:28   #30
Moderator
 
Pete7's Avatar

Cruisers Forum Supporter

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 10,769
Images: 14
Re: Charging laptop, camera, monitor etc. W/O an inverter?

Quote:
Originally Posted by john61ct View Post
Going DC-AC-DC can't really be called "simpler" IMO.
As you say depends on the usage, but for occasional charging of the drill or razor then yes it is simpler even for those living full time on board. How often do you need to charge a battery powered drill? The current Acer laptop is quite efficient, so saving 30% of 2 amps even for a whole evening of us isn't worth getting excited about compared to say the heating or slow cooker.

The previous Dell laptop circa 2007 was a bit power hungry with a 120w adapter. However, an 3rd party charger did work okay, it just gave a warning on the screen saying "the charger isn't a genuine Dell" which just needed a good stiff ignoring. There is something about Dell using a third contact on their chargers.

Pete
__________________

Pete7 is offline   Reply With Quote
Reply

Tags
camera, charging, inverter, laptop, monitor

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
ownership, registrations, tax etc etc etc, (future boat owner) liquido Dollars & Cents 1 20-07-2008 06:00



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:21.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.