Lithium Ion Battery Pack - 2.2Ah (USB)

Power on the go? Why didn't you ask? We've got plenty! These portable, rechargeable lithium ion 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. A 7-segment LED will alert you to the charge level of the battery and start powering your device. To recharge the battery pack, just plug it into your computer or phone charger using the included USB micro-B cable.

This particular battery pack has a 2,200mAh capacity and will source 1,000mA at 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.

  • 85.85mm x 18mm x 18mm

Lithium Ion Battery Pack - 2.2Ah (USB) Product Help and Resources

Raspberry Pi Zero Helmet Impact Force Monitor

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How much impact can the human body handle? This tutorial will teach you how to build your very own impact force monitor using a helmet, Raspberry Pi Zero, and accelerometer!

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This battery can shut off if the load is not pulling enough power. Testing one for a low power application, the battery pack shut off at about 40 seconds. If the load is pulling more power, the battery pack will stay on as long as there is enough of a charge. The following boards will not pull that much power causing the battery to shut off:

  • Spectacle Boards
  • Chibi Chip

Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

2 Electrical Prototyping

Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • garrettscooter / about 5 years ago / 1

    The current USB battery pack I have momentarily looses power when I start or stop charging it. Meaning if I have a running raspberry pi plugged into it and I start to charge it the pi will reboot. Dose this pack do the same? It could be a perfect battery back up for running a pi during a short power outage.

  • AndyL / about 6 years ago / 1

    If SparkFun could source some reliable power banks with an "always on" mode, ideally with a physical on/off switch, that'd have real hobbyist value.

    Normal power banks are too 'smart' to be a reliable power source for things that need a low or variable amount of juice. They might decide to turn themselves off at any moment, requiring you to faff around with the button.

    I know it's not hard to hack a solution using a 18650 cell, but a ready-made, hobbyist-friendly power-bank would be a handy thing to have hanging around the workbench.

Customer Reviews

3 out of 5

Based on 3 ratings:

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2 of 2 found this helpful:

Disappointing performance and quality

I bought two of these. Their output voltages were 4.76V and 5.10V fully charged, so the set-points are too variable. Although rated as "2.2Ah", actual capacity is about half that: 1.036Ah and 1.076Ah. This was measured after several charge/discharge cycles (at only 260mA) gave similar values. On one unit, the entire I/O label pulled off with the cable, exposing additional apertures to the inside.

Perfect for the price!

I bought two of these. Yes, the I/O label is crap so I just pulled it off. Looks better without it. It does what I need it to do. It's TINY and it powers my 5V projects on the bench. (used a sparkfun mini USB breakout to get to the power pins). The LED display does show charging status, but I don't think it shows the battery level during discharge. It always shows "100". No matter, I have two. When one dies, I swap it out with the second. Very handy when I need to power multiple projects and the bench supply is busy already.

Auto shutoff ruins it

It was a closeout and very cheap, but the auto shutoff makes it less useful. Anyone know what the min current is to keep it on?

We are not really sure what the min draw current is to keep this battery going and we do not have any to test I am afraid.

Sorry I was not of much help here.