Eval¶

Weisswurstthermometer; mainly power supply;

e.g. Have thermometer at work

• Thermocouple-Interface
• Loud buzzer
• USB interface for charging
  • Circtuit from Minutnik-eInk
• Switch-On/Off button
• Auto off
• Should run a week

How much current draws CANDis? single 18650 cell ok? ca. 3000mAh. 3,6V. 7,1V

Compare¶

• Trelock LS760: 3,7V; 3000 mAh

Charger IC¶

• billigst: TP4056; nur 1 Zelle; bzw. MCP73832
• Schutz: DW01A
• MCP73844-840IMS; 2 Zellen, kein Balancer

BQ40Z50: balancer; 2-4 cells, circuit a little bit complicated; Protection only
BQ40Z80: balancer; 2-6 cells; circuit a little bit complicated
BQ4050: 1-4 cells; Protection only
ISL78714; Up to 14 cells on one chip; NDA for full datasheet
BQ24753A: no balancing
bq24735: no balancing
BQ7693002DBT

BQ25887: Charge and ballance 2 cells only.