Ant2 LiPo Charger

by Beast Devices

The tiniest USB Type-C LiPo charger

View all updates Feb 11, 2021

How To Change Battery Charging Current

by Andrejs Bondarevs

We would like to thank our backers for supporting this project. We are getting close to reaching the goal! Meanwhile, we made a quick guide on how to change the battery charging current.

 Ant2 charging current set resistor

Ant2 charging current set resistor

It is possible to easily change the charging current by replacing the charging current set resistor. The resistor value is calculated using the following equation:

R = 1000/I

To make it easier to select the resistor value, we have precalculated some of the values. The Ideal resisor column lists the calculated resistor values. Since it is not possible to buy resistor of any arbitrary value, there is an additional column which provides closest E24 and E48 series standard resistor values. The Actual current column calculates the charging current based on the selected E24/E48 resistor.

Charging current, mAIdeal resistor, kOhmClosest E24/E48 resistor, kOhmActual current, mA
5002.002.00500
4002.502.49402
3502.862.87348
3003.333.32301
2504.004.02249
2005.005.11196
1506.666.49154
10010.0010.0100
7513.3313.375
5020.0020.050
4025.0024.940
3033.3333.230
2050.0051.120

About the Author

Andrejs Bondarevs

abondarevs


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Product Choices

$14

500 mA Ant2 USB-C Charger with Mounting Screws

Preconfigured to a 500 mA charging current. Includes 2 pcs of M3 x 4 mm and 2 pcs of M3 x 6 mm Torx button screws in A2 steel.


$14

100 mA Ant2 USB-C Charger with Mounting Screws

Preconfigured to a 100 mA charging current. Includes 2 pcs of M3 x 4 mm and 2 pcs of M3 x 6 mm Torx button screws in A2 steel.

Credits

Beast Devices

Beast Devices is a tech blog and an open hardware designer


Andrejs Bondarevs

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