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Power & Batteries > LiPo Batteries

Polymer Lithium Ion Battery (LiPo) 3.7V 400mAh

SKU: CE04375

$10.95 AUD, inc GST
$9.95 AUD, exc GST
Polymer Lithium Ion Battery (LiPo) 3.7V 400mAh
10.95 AUD

SKU: CE04375

$10.95 AUD, inc GST
$9.95 AUD, exc GST
6 reviews 0 5 5
Shipping Offer


  • $6.95 Standard (2-4 days, tracked)
  • $8.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

Polymer Lithium Ion batteries offer superior energy density with this 400mAh battery being only 6mm in height!

With a cell voltage of 3.7 Volts, these batteries are perfect for microcontrollers and other low power devices, especially when paired with a good DC/DC regulator for logic level output.

Built into the battery is an over-voltage, over-current, and minimum voltage protection circuit which makes them even easier to use, although care must be taken when using LiPo batteries. Incorrect charging, usage, or physical damage to the battery can result in a fire. Be sure to only use a specific LiPo charger.

Although these cells are rated for 2C continuous discharge, the wiring and connectors are only rated up to 1A, so be sure to take that into account when determining your power requirements.

Remember that like any power source, you should be extra careful not to short the power pins as doing so can damage your battery and cause it to swell/overheat, rendering it unusable and dangerous.

Tech Specs:

  • 400mAh capacity
  • 38x25x6mm
  • 11g
  • 2C continuous discharge
  • Great energy retention with low self-discharge rates (<8% per month)
  • Reliable under extreme conditions (-10 to 50C)

This product is listed in:

Documentation and Resources:

Product Comments

Customer Reviews

  1. Review by James verified purchaser

    This item is small and easily fitted the case I was using to house the project. The battery worked perfectly, charged ok and did what I wanted. But the processor board I chose (Adafruit HUZZAH ESP8266) consumes too much power to make this battery a real option. (USB bridge chip remains on all the time, 6.4ma). I am considering a number of different board which would make this battery an excellent choice. (Posted on 11/09/2017)

  2. Review by David verified purchaser

    So tiny! (Posted on 29/08/2017)

  3. Review by paul verified purchaser

    I don't buy LiPo batteries unless I can trust the quality to be of a high standard and that's exactly what you get here from Core.
    10/10 (Posted on 10/06/2017)

  4. Review by Peter verified purchaser

    Neat little battery with a really small footprint - perfect for small projects and works a treat when combined with Powerboost 500 charger. (Posted on 20/04/2017)

  5. Review by Matthew verified purchaser

    Small yet capacious. Bought for an LED project & it lasts for hours. (Posted on 18/09/2016)

  6. Review by Peter verified purchaser

    Works as expected - good value. (Posted on 18/08/2016)

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $8.95 for Express Post (Overnight for Australia Post Next Day Network, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
NSW, 2289

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!