18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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18650 battery flat top

release time:2024-04-18 Hits:     Popular:AG11 battery

  Characteristic parameters and charging circuit of the power management chip bq24040 Chinese information

  The bq24040 series of devices are highly integrated lithium-ion battery linear chargers targeted at space-constrained portable applications. The device operates from either the USB port or the AC adapter. High input voltage range input overvoltage protection supports low-cost unregulated adapters.

  The bq24040 has a single output power for battery charging. System Load As long as the average system load does not keep the battery fully charged the 10 hour safety timer can be placed in parallel with the battery.

  Characteristic parameters charging

  1% charging voltage accuracy

  10% charging current accuracy

  USB maximum input current limit for pin selection (100mA and 500mA)

  Programmable charge cutoff point and precharge current limit

  High voltage (3.45V) chemical support via bq24045

  Protect

  30V input level; 6.6V or 7.1V input overvoltage protection

  Input voltage dynamic power management

  125 degrees Celsius thermal management; 150 degrees Celsius thermal shutdown protection

  OUT pin output short circuit protection and ISET pin short circuit protection

  Operates over the JEITA range through battery negative temperature coefficient -1/2 fastest charge current when cold, 4.06V when hot, bq24040 and bq24045

  Fixed 10-hour safety timer, bq24040 and bq24045

  system

  Automatic disabling charge termination and timer modes for battery packages without thermistor, bq24040 and bq24045

  Status indication, charging/end

  Can be packaged in 2*2mmDFN-10

  Integrated auto-start function for production line testing, bq24041


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