Why is it called a portable battery charger? It seams to me that the only power supply it uses to charge is a standard house plug. No internal power.
2029988
I assume it is marketing department jabber. It has a normal two prong plug for the usual 110/120 volt household receptacle. I like the light that indicates when a full charge is reached. It takes a tad longer than my old Sears charger which would over charge the battery if I didn't keep a tight eye on it. I use it on all my boat and car batteries. Years back, professional battery charger's were large heavy affairs with two wheels and a handle, so I guess this small one could be called "portable" as was my old radio in the 1940's - about half the size of a shoebox with a handle on the top and an electrical cord to plug in vs. the 3 foot high floor model we had in the living room! I assume it is marketing department jabber. It has a normal two prong plug for the usual 110/120 volt household receptacle. I like the light that indicates when a full charge is reached. It takes a tad longer than my old Sears charger which would over charge the battery if I didn't keep a tight eye on it. I use it on all my boat and car batteries. Years back, professional battery charger's were large heavy affairs with two wheels and a handle, so I guess this small one could be called "portable" as was my old radio in the 1940's - about half the size of a shoebox with a... » Read More I assume it is marketing department jabber. It has a normal two prong plug for the usual 110/120 volt household receptacle. I like the light that indicates when a full charge is reached. It takes a tad longer than my old Sears charger which would over charge the battery if I didn't keep a tight eye on it. I use it on all my boat and car batteries. Years back, professional battery charger's were large heavy affairs with two wheels and a handle, so I guess this small one could be called "portable" as was my old radio in the 1940's - about half the size of a shoebox with a handle on the top and an electrical cord to plug in vs. the 3 foot high floor model we had in the living room! « Show Less
2029989
It's referred to as portable because it's extremely light weight and easy to carry. You still need to plug it in though.
2029990
Portable means you can charge a battery from any 110 volt outlet wherever you are from coast to coast.Small enough to pick up and take it with you. Like a portable radio.
2029991
this portable battery charger can run of many sources of electricity such as your standard house power, solar power, wind power, or a household generator.the reason why they refer to this as a portable unit is because it is made in China and came through a port.
2029992
It is portable because the unit can be carried on to different spots where the power 120V AC outlet is available like in the office, the house or car (with 120V AC output plug). You're right it needs a standard 120V AC (household outlet) to make it work. Unlike other portable stuffs like portable CD, DVD...they can use it's internal compartment with batteries (DC powered)
2029993
The only power is the AC plug. Portability in this case means it can be used in or out of your boat, since it is light and compact.
1348158
the battery has to be disconnected from whatever the battery is powering, otherwise you charge not only the battery but also the connected car/RV etc. This can be harmful to your cars electronic or the charger itself. I sell these chargers (6 volt version) with my battery powered pet fountains and had no complain over many years.
502843
For me a power adapter takes the 'portable' out of portable. I have rechargeable batteries and don't worry about it. I take extra batteries when I travel, no big deal.
446790
I assume because it has an AC plug that this will work. Keep in mind it requires a lot of effort to get a charge so this device really is for emergency situations where you might need power rather than as a means to charge a device for the long term.
1353932
This is just a battery for the most part, but it comes with a small "wall wart" charger that you plug in to give it the energy it has. That "wall-wart" doesn't meet those states rules on "power conservation", so they aren't allowed there.
320478
That's an interesting question. As reported in my original report on this product, the unit I received was non-operational. If I were travelling, thanks to your question, I would think about using electronic devices with external power packs to recharge batteries. (th)
1369533
While I could certainly be mistaken, as an Electrical Engineer, I am fairly certain that there is some kind of DC-DC converter inside that is built out of solid-state components, and is thus fairly permanent. Without completely gutting and redesigning part of it, I would say that it is what it is. However, depending on the application, voltage outputs can change. Charging a drained battery may occur at 13.5 V for example while topping off a full battery may be somewhat higher. Why is it that you need it to be higher?
1497991
It is possible to hook up an external battery pack, it'd be a diy project though. Otherwise, like the other guys said, you're stuck with having to have a power outlet
1128537
Sorry, I just saw your question. I would NOT recommend this battery charger PERIOD. I ordered two of them and they are cheap and don't work.
267469
The battery charger is designed to charge the batteries and not to act as a power supply. I do have a new model just out that will milk olmost 4 gallons of milk. I will be putting it up on Amazon very soon. If you are interested in that milkier right now please let me know also send me youre e-mail address the new unit is 109.00 and shippingThank YouDanDansha Farms
1613146
I've used both a mini-usb to usb cable to any USB source and the proprietary. Any charger that give acceptable mini-usb power can work.
455910
Just be aware it can't charge laptops the current only goes one way. It comes IN from the USB plugged into a laptop with the micro USB plugged into the side of the charger and it goes OUT the USB port on the end of the charger top the micro USB at the end of the charger. I saw someone complain the charger didn't charger their daughter's laptop and instead was draining power...
768703
I've tried charging mine with normal microUSB because I thought I'd gotten a bad AC adapter and the normal microUSB's won't register as charging and didn't seem to raise the power at all. Luckily for me, it turned out the AC adapter just has an odd proprietary plug that needed to be pushed slightly harder to click into place the first time, so I'm able to charge, but yeah, it was a bit of a disappointment to realize that it can't charge off of the same USB stuff all my other electronics use.
1866436
That's a question for the seller but in my opinion that's only for external charging internal charging of a vehicle has a voltage regulator, only thing I can think of but again I'm just a consumer like you.
883395
It's not a charger per se - it is simply a passive adaptor. You could use it as a charger if you connect it to a source.
552809
It's not a rechargeable device. It's need to be continuously connected to power supply.
958491
The simplest way to use this anywhere (while camping or in the home) may be to get a "Jump starter" device that is pretty much a small 12V battery in a housing with jumper cables, a lighter outlet, and more. There are several brands of those available, but they are all pretty much the same thing (do a search for jump starter here on Amazon). This needs over 10 amps power to start it and ~6 to run, so a car battery charger would be the only thing close enough to a "power supply" that plugs into a house outlet that could run it. I don't think running a charger without a battery is a good idea, so that's why I suggest the "jump start" battery.