empowering creative people

LiPo Fuel Gauge

SKU: TOL-10617

$15.19 AUD, inc GST
$13.81 AUD, exc GST

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LiPo Fuel Gauge
15.19 AUD

SKU: TOL-10617

$15.19 AUD, inc GST
$13.81 AUD, exc GST
1 reviews 0 5 4
Shipping Offer
Brand: Sparkfun


  • $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.

LiPo batteries are a great way to power your projects. They’re small, lightweight, and pack a pretty good punch for their size. Unfortunately, even the best batteries eventually run low on power and when they do it’s often unexpected (and at the worst time). Don’t be caught by surprise next time your board suddenly powers-down! The LiPo Fuel Gauge connects your battery to your project and uses a sophisticated algorithm to detect relative state of charge and direct A/D measurement of battery voltage. In other words, it tells your microcontroller how much ‘fuel’ is left in the tank. The LiPo Fuel Gauge communicates with your project over I2C and an alert pin also tells you when the charge has dropped below a certain percentage.


  • Fuel gauge system for single cell lithium ion batteries
  • Can be connected in circuit to monitor battery.
  • Hardware and Software Reset.
  • I2C Interface


Documentation and Resources:

Product Comments

Customer Reviews

  1. Review by Armen verified purchaser

    Unlike most batteries, Lithium batteries will keep there voltage up and then drop once they are exhausted. This makes it difficult to gauge their relative charge by reference to their voltage. This item which has the MAX17043 chip helps determine what the state of charge is for your Lithium battery.

    I went through some charge and discharge cycles to test things out and I got very stable/consistent figures. The only thing that I do not like (and hence the 4 stars) is that the Maxim does not disclose how to configure one of the chip's registers, specifically the CONFIG register. This register can be set by various libraries floating around under the "setCompensation" procedure. The default value is 0x97 but this will require tweaking to ensure your charge percentage comes up to 100% when it's fully charged, otherwise you may get slightly lower readings. This is something you need to experiment with.

    Apart from that, this is a great little unit to help you know how long your battery is going to last! (Posted on 30/11/2017)

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!