Lithium Ion Coin Cell Charger
USB-powered charger specifically for rechargeable LIR2450 coin cells. Charges via three-stage CC/CV at 45mA fast-charge; green LED signals completion. Do not use with non-rechargeable lithium coin cells.
Start wiring
I2C · USB · 5 V · Module
Verify supply voltage and logic levels before powering up.
Charging
45 other optionsSingle-cell LiPo chargers (TP4056, MicroUSB/Type-C modules), charger/booster combos (PowerBoost 500/1000, Lipo Rider Plus 5V/2.4A), I2C fuel gauges (MAX17048, LC709203F) and Qi wireless charging coils.
Related groups
4 groups
9V Alkaline Battery visual preview
9V Battery Holder visual preview
9V Battery Snap visual preview
9V to Barrel Jack Adapter visual previewBatteries
9V alkaline cells, CR2032 coin cells, 3.7V LiPo packs (1000–1200mAh), 7.4V 2S LiPo, 18650 Li-ion holders (1–6 cells), AA/AAA holders in every configuration, and snap leads with barrel adapters.
Power · Batteries · 105 parts
9 VDC 1000mA regulated switching power adapter - UL listed visual preview
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DC-DC Automatic Step Up-down Power Module (3~15V to 5V 600mA) visual previewPower supplies
Wall adapters (5V–24V), adjustable and fixed buck/boost/buck-boost converters (MT3608, LM2596-class), USB-C PD triggers (HUSB238), breadboard supplies, DIN-rail units and passive barrel-jack adapters.
Power · Supplies & regulators · 146 parts
3.8 / 1.3mm or 3.5 / 1.1mm to 5.5 / 2.1mm DC Jack Adapter Cable visual preview
Adafruit bq25185 USB / DC / Solar Charger with 3.3V Buck Board visual preview
Adafruit bq25185 USB / DC / Solar Lithium Ion/Polymer Charger visual previewArc 10W Solar Charger Kit incl. V25 6400mAh Powerbank visual preview unavailable
Solar
Solar panels from 1.5V 250mA flexible film to 18V 10W polysilicon, MPPT solar power managers (DFRobot 5V and 9V/12V/18V, Waveshare 6V–24V), bq25185 charger boards and LTC3588 energy-harvesting breakouts.
Power · Solar power · 28 parts
1.75mm PLA (1kg) - Black visual preview
1.75mm PLA (1kg) - Gold visual preview
1.75mm PLA (1kg) - Green visual preview
1.75mm PLA (1kg) - Natural visual preview3D printing
DFRobot 1.75 mm PLA in 1 kg spools makes up the bulk of the group, in over 15 colors. Specialty options include PVA in both diameters, NinjaFlex flexible filament, Proto-Pasta conductive PLA, and wood-fill. OverLord printer spares and OverLord printers round out the hardware side.
Tools & prototyping · 3D printing · 53 parts
