Low Current Lithium Ion Battery Pack - 2.5Ah (USB)

We've taken the classic, portable, rechargeable lithium ion battery pack and tweaked the design to make it amenable to low current applications. While similar power banks are typically designed to power off automatically at lower currents, this battery pack will continue to operate if your device is drawing a mere 20mA and over! Just connect your device to the USB-A port on the battery pack and you're good to go! To recharge the battery pack, just plug it into your computer or phone charger using a USB micro-B cable (not included).

This particular battery pack has a 2,500mAh capacity and can 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.

Low Current Lithium Ion Battery Pack - 2.5Ah (USB) Product Help and Resources

Battery Technologies

February 6, 2013

The basics behind the batteries used in portable electronic devices: LiPo, NiMH, coin cells, and alkaline.

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.
See all skill levels


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.

  • Member #411824 / about 5 years ago * / 3

    There is a note on the datasheet

    Lowest Output <20

    Is there any limit the battery switchs off? A lot of deep sleep devices consume less than 1 mA! I'm searching for a USB chargeable battery pack that does not switch off on any current. Is this the case for this device?

    • santaimpersonator / about 5 years ago / 2

      Hi there, it sounds like you are looking for technical assistance. Please use the link in the banner above, to get started with posting a topic in our forums. Our technical support team will do their best to assist you.

      That being said, you will probably have a hard time finding a USB chargeable battery pack for your application, most battery packs have an auto-off feature since they are usually intended to charge mobile devices. You should probably be looking at a Li-Po battery and related accessories instead.

      Based on my experience, I assume there is a small window where the battery pack still times out/shutdown because the current draw is below the minimum (~20 mA). My best guess is that this will not work for any deep-sleep applications, due to the auto-off feature.

    • Member #161230 / about 5 years ago / 1

      Also would also like to know the answer to this--

      Can the battery supply do a short deep sleep if the wake up meets the 20mA ?

  • wd6cmu / about 5 years ago / 3

    Can this provide power while it's charging? I use that setup for backup power for small devices (clocks and such), but not all USB battery packs can operate that way since designers often save money by sharing the power converter between the two functions.

  • OldFar-SeeingArt / about 5 years ago / 1

    You indicate that this is a 2.5 amp-hour pack but the pdf you point at sez 2200mA-hr. Did I miss something here? Thanks!

    • Member #1347630 / about 3 years ago / 1

      For anyone wondering now, the PDF has been updated to say 2500mAh too.

Customer Reviews

5 out of 5

Based on 3 ratings:

Currently viewing all customer reviews.

Works great

Works exactly as described. What a relief because this is hard to find

A customer wanted a semi functional fusion core

I design models for 3D printing for Vault901. I had a Fusion Core stash container I designed that a customer wanted a little extra function than a nifty stash box. The dimensions were perfect for the application and the customer was completely satisfied. www.etsy.com/listing/288174923/fallout-fusion-core-stash-container-usb

Just what I needed

I ran into the (apparently) classic low-current sleep issue after using an old USB power pack to power a couple LEDs in series with a 200Ω resistor. Just got this today and now the LEDs stay lit! Easy peasy. The description says that the USB micro cable is not included, but one was included in my package. Looks just like the photo.