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Battery upgrade

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2x Stock batter Upgrade battery
Model EREMIT 606090 HXJNLDC 7565121
Chemistry Lithium-Polymer Li-on
Capacity 14.8 Wh (4 Ah) 30.34 Wh (8.2 Ah)
Nominal voltage 3.7 V 3.7 V
Discharge max nominal 2 A
Charging limit voltage 4.25 V 4.2 V
Mass 74 g
  • Connector: JST-PH 2.0mm (not included in upgraded battery)

Charging chip - MP2650

  • Datasheet: MP2650GV.pdf
  • 4V to 21V Operating Input Voltage (VIN) Range
  • Up to 5A Configurable Input Current (IIN) Limit (Up to 45W Total Power)
  • Up to 5A Configurable Charge Current (ICHARGE)
  • Configurable Battery Charge Voltage Regulation (VBATT_REG) Up to 4.5V/Cell
  • Up to 5V/3A USB On-The-Go (OTG)

Monitoring chip - MAX17320G20+

  • Datasheet: max17320.pdf
  • Battery Health + Programmable Safety/Protection
    • Overvoltage (Temperature Dependent)
    • Overcharge/Overdischarge/Short-Circuit Current
    • Over/Undertemperature
    • Undervoltage + SmartEmpty
    • Battery Internal Self-Discharge Detection
    • Ideal Diode Discharge During Charge Fault
    • Charging Prescriptions (JEITA)
    • Prequal Charge Control with CHG FET
  • ModelGauge m5 EZ Algorithm
    • Percent, Capacity, Time-to-Empty/Full, Age
    • Cycle+™ Age Forecast
  • Precision Measurement Without Calibration
    • Current, Voltage, Power, Time, Cycles
    • Die Temperature, 4 Thermistors ±1˚C
  • Cell Balancing with Internal FETs
  • SHA-256 Authentication
    • Nonvolatile Memory for Stand-Alone Operation
    • History Logging, User Data (84 Bytes)