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SparkFun will be closed May 25, 2015 for Memorial Day. Orders placed after 2pm on Friday the 22nd will ship out on Tuesday. Thanks!

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$ 11.96

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In stock 158 in stock
14.95 retail price
11.96 1+ units

limit of 2 per customer


Description: Power on the go? Why didn’t you ask? We’ve got plenty! These portable, rechargeable lithium-polymer battery packs are simple, compact and make for a great way to power your widgets in the field. Best of all, they’re dead simple to operate: Just connect your device to the USB-A port on the battery pack and press the power button. An LED will alert you to the charge level of the battery and start powering your device. The battery pack will turn off on its own when your device stops drawing power from it. To recharge the battery pack, just plug it into your computer or phone charger using a USB micro-b cable.

This particular battery pack has a 1000mAh capacity and will source 700mA at 5.5VDC.

Note: This item may take longer to process due to battery installed in the equipment and therefore does not qualify for same-day shipping policy. Sorry for any inconvenience this may cause.

Dimensions: 13.5 x 54.2 x 65mm

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Customer Comments

  • Does anyone know if this can be used as a uninterrupted power supply (UPS)? I want to run my circuit off this, then if the power goes out, have it run off the charged battery. When the power comes back on, the internal battery would charge back up.

    • If it works like one of the USB battery packs I have, yes. If it works like the other one I have, no. It depends on whether its input and output are usable simultaneously. One of my packs (Justin 5,200 mAh) can supply current while it’s plugged in; the other (Justin 10,000 mAh) turns off its outputs while it’s plugged into power. So… I don’t know. Maybe. It’s on sale right now, too, so you could just buy it and see for yourself if nobody who knows shows up.

  • I actually have two questions 1. Can this work as a LiPo recharger? I mean, like If I was to get another 1S LiPo and then toss it in? (Also thinking of just what if I wanted to replace the LiPo inside in the future) 2. Does this have a cut-off circuit? That is, if the device draws and draws power will the pack “shut down” before it reaches the minimum Voltage before it explodes or whatever?

  • Have you cracked open one of these yet to see what type of battery these have in them? An Internals photo would be nice to see. I purchased something similar from china on ebay with a mini solar panel, when I opened it up I was shocked to find it had no fuse or thermal protection on the batteries.

    • we have. it’s made by the same people who make our batteries, so they have the same lipo battery that we sell inside.

  • This works great along with the USB microB Cable to power my arduino yun.

  • Is there a trick to getting the battery to shut off? The button works to power it on but no ammount of pressing or holding will it turn off. I have to remove the USB cable before it will turn off. Is this supposed to happen?

    • That may not be your desired behavior, but it’s how every USB battery pack I’ve used or seen works, so I don’t think it indicates a defect. I suppose you could add a normally closed pushbutton to the USB V+ line to serve as an off button.

  • I bought this to run an Electric Imp and it shuts off after a few seconds. If you hold the power switch in it stays on though. I guess I can replace the momentary switch with a toggle. Pretty disappointing.

    • USB battery packs stay on while the current being drawn is above some threshold value. It sounds like your Electric Imp isn’t drawing enough current for the battery pack to think anything is connected.

  • This pack works with raspberry pi model B?

  • I realize this sounds like a stupid question, but how do you use this?

    At first I thought I had a bad battery, but SparkFun sent a replacement and it behaves the same way:

    1) The power pins always show a 0.17V drop, even shortly after charging. 2) After fully charging (according to the indicator light) and then letting it sit for an hour and plugging back into the charger, the indicator shows it is dead. 3) It doesn’t have any switches or buttons or other obvious reasons it wouldn’t supply power. 4) It doesn’t seem to be a load sensor either, because the battery doesn’t respond to small resistors or my phone.

    Did I miss something? Or is it just another junk battery from China?

  • My 1000mAh pack ( PRT-11358 ) arrived Saturday and I just plugged it in to my laptop. So far, so good, but I did notice that the LED is very dim, to the point of being nearly invisible in my normal office lighting. Admittedly this is a case where low LED power drain is a good thing, but the problem seems to be with the “viewing port” in the button it’s stuck behind; I can see the LED burning brightly when I look into the USB “OUT” port.

    Which might be more difficult once I have something plugged into that port. <grin!>

    Obviously you can’t fix the unit I have, and I don’t plan on returning it, but it would be nice if you could pass this information back to the manufacturer so they could improve on it for"USB Battery v1.1".

    Thanks.

  • I am using this to drive a blue-tooth RS232 module, it isn’t enough power to keep it from auto shutoff, anyone know a way around this?

    • unfortunately you would have to get a higher power battery pack. I would suggest that you get the 6600mah battery pack from here at sparkfun but you can also get the 2000mah one and that one should work. either one will work though.

  • Has anyone tried hacking this charger and adding a higher power lion batt? like this one perhaps

  • I’m really confused by this product. The charging IC is a linear charger, but what is producing the 5V? Either this has 1) a switching power supply or 2) it has 2S batteries and it is regulated to 5V. Anyone at Sparkfun know? You said you opened it. Does it have an inductor in there?

    Has it been tried on an iphone?

    • Ok, answered my own question. It has a switching supply. Take a look at the tear-down picture in the 2A version.

      Still don’t know if it has the resistor strappings to work with an iphone though

      • I just received the lipo charger. It works for both iphones and blackberries. Joy!

  • I’m having the sam problems with the bigger battery. Adding a load resistor should work, but its also a waste of power and you might need to heatsink. Till I have time to open this thing up I just plug my phone into one of the open ports to charge. That draws enough current to keep the battery on. I use the second port to power my project.

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