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Go Back   SailNet Community > On Board > Gear & Maintenance > Electronics > iPad Charging - 12V vs. Inverter
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Thread: iPad Charging - 12V vs. Inverter Reply to Thread
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Topic Review (Newest First)
04-09-2014 02:05 AM
Rusty123
Re: iPad Charging - 12V vs. Inverter

Here's a good write up on USB chargers. I bought a couple of the Scosche units - they're very low profile.

http://thewirecutter.com/reviews/best-usb-car-charger/
02-17-2014 10:54 AM
Alex W
Re: iPad Charging - 12V vs. Inverter

Bluesea makes a nice USB charger that is hard wired directly to the boat, instead of using a USB charger:
Dual USB Charger Socket - Blue Sea Systems

It is about $20, so about the same price as a cheap 12V socket and cheap 12V USB charger.

It matches the aesthetics of their 12V ports. No one can accidentally walk away with the charger and give you the excuse that none are left. It has a 2.1A port for iPads and a 1A port for cell phones or smaller tablets.

I carry an inverter, but only use it for charging my camera batteries because there is no 12V charger available for them. Everything else on our boat charges via 12V. We don't ever use the shore power in the summer (I do in the winter to keep a dehumidifer running) and have no genset.
02-17-2014 08:49 AM
Minnewaska
Re: iPad Charging - 12V vs. Inverter

tdw. Can't say I know exactly what your pic is, but it looks like a device that has a rechargeable battery that you can then use to recharge your devices. That one looks like it can be charged by both shore power and solar.

I used one like this when in Europe, so that I didn't have to mess with voltage converters for my Blackberry smartphone (dinosaur now). The one I had would only charge via wall socket. It worked, but the smartphone never took a good charge again.

Could be entirely coincidental.
02-16-2014 10:09 PM
tdw
Re: iPad Charging - 12V vs. Inverter

Quote:
Originally Posted by Minnewaska View Post
I used a remote charger on an old Blackberry and swore it screwed the battery up from that point forward. Could be coincidence.
Minne ... are you saying that the gizmo I posted the pic of is a "remote charger' ?

I'm not too sure what you mean.
02-16-2014 08:24 PM
Minnewaska
Re: iPad Charging - 12V vs. Inverter

I used a remote charger on an old Blackberry and swore it screwed the battery up from that point forward. Could be coincidence.
02-16-2014 06:51 PM
tdw
Re: iPad Charging - 12V vs. Inverter

Does anyone use one of these contraptions (or similar) ?

http://cdn1.image-tmart.com/prodimgs...ck_600x600.jpg



I'd quite like to be able to take the recharging of non essential electrical devices (E Readers, Tablets, Phones, Notebooks) off the main battery bank and was wondering how well one (or more) of these would work.
02-15-2014 10:04 AM
Maine Sail
Re: iPad Charging - 12V vs. Inverter

Quote:
Originally Posted by Minnewaska View Post
We never ever charge off the invertor. We do, however, run the genset each morning and night to top the house bank and refreeze the ice and everyone scrambles for an outlet and plugs everything in. Sort of a Pavlov's Dog scenario. Funny.
This is the best way to charge loads like this. I refer to it as opportunity charging or sneak charging.



Quote:
Originally Posted by Minnewaska View Post
My only remaining concern is those cig style sockets themselves. I've seen so many short out in my lifetime, I always worry they are a fire hazard.
The only real problem with them is humans...

Keep in mind that most of these are safe to run at a max of about 6-8A, even the 15A rated models. Proper wiring and a 10A max fuse will prevent 99.9% of the issues. As plugs on devices that insert into the sockets get loose over time, REPLACE THEM......

I can't tell you how many times I have seen 150W "plug in" style inverters inserted into a cig style outlet, that is fed UNFUSED with 16GA wire, and the socket is physically melted. Just don't be crazy about it and they will give almost zero issues...

Remember these USB adapters are burning a max of about 1.5A DC, a miniscule load to one of these outlets......... Also please DO NOT plug "1,000,000 candle power search lights" into these outlets..........
02-15-2014 09:08 AM
Minnewaska
Re: iPad Charging - 12V vs. Inverter

We never ever charge off the invertor. We do, however, run the genset each morning and night to top the house bank and refreeze the ice and everyone scrambles for an outlet and plugs everything in. Sort of a Pavlov's Dog scenario. Funny.

I do have the cig adapter to charge directly off DC, but rarely need to do so. The most often event is wanting to maintain a charge, when I leave an iPhone or iPad running a GPS program. For example, we use Boat Monitor, which allows me to check my position and persistence line from shore, when I leave a device running aboard. It's way cool and huge piece of mind.

However, the GPS really works the battery, so I will keep it plugged into the DC adapter. The 440 amp/hr house bank doesn't even seem to know its there.

My only remaining concern is those cig style sockets themselves. I've seen so many short out in my lifetime, I always worry they are a fire hazard.
02-14-2014 09:05 PM
tdw
Re: iPad Charging - 12V vs. Inverter

I do remember reading (here probably) that with a notebook its better to take out the battery and run directly off ship's batteries than to recharge.

Truth or delusion ?

We always charge tablets and phones through DC outlet but I tend to put them on charge during the day while we are getting good solar charge or of course when running engine.
02-14-2014 06:54 PM
Faster
Re: iPad Charging - 12V vs. Inverter

Quote:
Originally Posted by Maine Sail View Post
Laptops, especially older models, can be real energy hogs... There are 12V adapters for nearly every laptop made. iGo, Lind Electronics and Targus are some of the better brands..
Indeed... running my 10 yr old Toshiba through an inverter runs as much as a fridge - and a 100% duty cycle!.
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