570 of 655 people found the following review helpful
USB output too low,
This review is from: Belkin 3-Outlet Mini Travel Swivel Charger Surge Protector with Dual USB Ports, 5 Charging Outlets Total (1 AMP / 5 Watt) (Electronics)
**This review relates to the 1 Amp, 3-outlet version and was posted prior to the introduction of the new products that have been combined into one listing.
To get directly to this items flaw... It cannot recharge/power more than one USB item at a time. So what's the point in having two USB outputs?
The 120V outlets work as advertised. The ability to rotate the prongs is a plus as it can be adjusted to most if not all outlets.
The USB power fails if more than one item at a time is plugged into the surge protector. Even if, say your phone is fully charged, if you go to connect another item to run or charge, the surge protector will not supply the power that both items demand. The items that are connected will act as if they have been disconnected from their power source, then once the surge protector accumulates enough power(not certain, but seem to act as if there are capacitors)to start supplying power once again the items connected to the USB ports start to operate briefly until the surge protector cannot supply enough power for the two items.
As stated before, it will supply ONE item with power, without a problem. But will not supply enough power for two, even if one item is fully charged.
** Thank you Jeff Backe, I've been putting off editing this post in response to all the people saying that '500mA is the standard' for quite some time. This 500mA WAS the standard well before I made this purchase. The newer standard for wall chargers, which I believe this falls under, has been out since around mid 2007. This new specification is UP TO 1800mA(1.8A) per port.
When I made my purchase there also weren't the nice pictures that show you the current rates. So there really wasn't any way for me to know this until I received it.
Another thing, this item is rated at 500mA(.5mA) per port but is not actually limited to 500mA at the port if you only plug in one item. In other words, the way this item is configured it will actually put out the full 1000mA(1A)through one port, hence the reason you can plug in a high current draw device using one port. But when you plug in that second item the 1000mA is now split in half or however much each device is trying to draw. It is only able to keep up with this high demand for a short while until its capacitors are drained and cuts off supplying power, then quickly recharges the capacitors and re-establishes the supply of power once again. This cycling can't be good for either device.
Tracked by 10 customers
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Showing 1-10 of 36 posts in this discussion
Initial post: Jul 17, 2010 2:36:20 PM PDT
I've had a netbook, a Kodak zi8 pocket cam, an iPhone and a 120 gb iPod classic all charging at the same time on this unit. Two were the outlets on front & two were the USB. Please don't post reviews that are inaccurate. I can't speak to your exact situation, but given the high ratings this unit has, a reasonable person may think perhaps your unit is defective (and try to get a replacement.) This unit does indeed function just fine. To make a blanket statement that you cannot charge two usb devices simultaneously is just plain wrong.
In reply to an earlier post on Jul 24, 2010 11:42:44 AM PDT
avraam jack says:
His review is accurate.
The boc clearly states that each port only puts out half an amp.
The Ipad needs two amps and many modern usb devices need more than half an amp.
This unit is obsolete. Belkin and Amazon should be ashamed to sell it.
In reply to an earlier post on Jul 25, 2010 10:10:55 AM PDT
Gents, it's really all about the details. An iPad need 2 amps to charge and my iPhone 3g (older one) needs 1 amp. Charging at lower amperages will take longer and in some cases the device will not accept the charger at all so this comment is legit. For $12 you get what you pay for. Phones and mp3 players will eat up more amps as we get better screens, more memory etc. It would be nice for all ads to show amperage as most people will be oblivious to the facts.
Posted on Oct 18, 2010 8:20:06 AM PDT
Lincoln J. Mennuti says:
5v@500mA is the industry STANDARD folks, it's exactly the same power output as any powered USB port from any computer.
If your device can't charge via your computer's USB port, it can't be charged via this Belkin Mini Surge Protector.
- 5v@500mA is industry standard
- Many of the newer generation smartphones (like my Nexus One) come with 1Amp AC Adapters...But it will still charge using only 500mA, which of course means it will take twice as long to fully charge (or even longer still if I try using it while it's charging)
Before bashing a product, a little investigation into how things work would save a lot of frustration.
In reply to an earlier post on Oct 18, 2010 7:57:00 PM PDT
Last edited by the author on Oct 18, 2010 7:59:19 PM PDT
@ SuzieL, I never said there was anything wrong with the 120V power source, so you can drop the two items that were plugged into the 120V receptacles in your rebuttal statement. Not sure if you didn't read the whole comment or if you added them for dramatic effect.
Posted on Dec 1, 2010 11:00:17 AM PST
My iPhone 3GS + wife's Blackberry (Curve?) = no charge.
Unfortunately, we didn't detect this interaction until I had already thrown out the packaging. So we're basically stuck with it.
In reply to an earlier post on Dec 25, 2010 10:44:36 PM PST
Pasadena Gadget Guy says:
For people who have devices with high power requirements, a great investment is two male USB to one female USB power Y-cable (available for ~$3 on eBay). This is the same kind of USB power cable packaged with portable hard drives which also require more power than one single USB port can provide.
Having that 2M->1F Y-cable allow you to use your own charging cable and draw up to 1A power from two industry standard USB ports to allow faster charging of iPad, Droid, and other high power devices.
In reply to an earlier post on Jan 8, 2011 1:47:14 AM PST
Wesley Everett says:
Thanks for your post. I was attempting to charge a portable GPS that required a 1A charger from a similar surge protector, with two .5A USB ports. It never occurred to me to employ the adapter cable -- sitting right on my desk in a case with a portable USB drive! Appreciate the tip, it's now charging away.
Posted on Feb 4, 2011 4:06:08 AM PST
R. L. Epps says:
given the information listed in the other comments, it may help to revise your review to state that while it will dual charge standard 500ma devices, it will not support higher end devices. this post in not accurate in every case and as currently listed may mislead a consumer like my self who is fine with .5a ports.
iv'e dual charged my psp go and my xperia x10a many times with this device.
In reply to an earlier post on Feb 17, 2011 8:03:38 AM PST
Indeed, 5V/500mA is the USB standard. But ports on most devices can put out more than 500 mA, and the makers of peripherals are increasingly relying on this ability of ports to put out more than the standard. Usually this works out fine but sometimes not. If you want to "blame" anyone (which isn't really productive IMO), blame the peripheral manufacturers who rely on USB current being available above the standard value.