USB LiIon / LiPoly charger
17,00 €
3.7-4.2V LiIon / LiPoly battery charger (NOT suitable for old 3.6 / 4.1V cells) with a mini-B USB input connector. Default charging rate at 500mA, it is possible to set it from 100mA to 1000mA by soldering a resistor on the board. There are LEDs to indicate power_on, in_charge and full_charge. The board has 2 JST connectors at the output, to keep the battery to be recharged connected while you continue to power your project. Includes cable with JST connector for output.
- Description
- Product information
Description
This is a Lithium Ion and Lithium Polymer battery charger based on the MCP73833. It uses a USB mini-B for connection to any computer or 'USB wall adapter'. Charging is performed in three stages: first a preconditioning charge, then a constant-current fast charge and finally a constant-voltage trickle charge to keep the battery topped-up. The fast-charge current is 500mA by default, but is easily adjustable from 100mA up to 1000mA by soldering a through-hole resistor on-board.
This board is great for DIY projects because it has 3 indicator LEDs - one for power, one for charging status and a third that indicates when charging is complete. Keep the battery connected to the charger and pass power through the additional JST connector using the included cable!
For use with Adafruit Lipoly batteries only! Other batteries may have different voltage, chemistry, polarity or pinout.
Comes assembled and tested, includes a JST cable!
5V input via mini-B USB connector
For charging single Lithium Ion / Lithium Polymer 3.7 / 4.2v batteries (not for older 3.6 / 4.1v cells)
500mA charge current, adjustable from 100mA to 1000mA by soldering in a resistor
Separate JST connectors for battery and load system so batteries don't have to be removed for charging
Chip supports a 10K NTC thermistor which we have stuffed as a plain 10K. For people who require temperature monitors (using high charge rates), remove the 10K and solder in the thermistor in its place
0.1 ″ (2.54mm) breakouts for the battery, DC, and status LEDs
Free 2-pin JST cable included!
More deets:
Dimensions: 33mm x 35mm x 7mm (1.3in x 1.4in x 0.3in)
Weight: 5.7g (0.2oz)
Downloads:
MCP73833 Datasheet
https://github.com/adafruit/MCP73833
Read our tutorial about Lithium Ion / Polymer batteries for more details
Product information
| Weight | 0,05 kg |
|---|---|
| Length | 5x1x3 cm |
| BRAND | Adafruit |
