lithium ion

  1. johnyradio

    Do LI Charger Chips Require Constant Current Input?

    LI charger chips are switching step-down converters with a constant-current mode. Say it's a single switch buck-type charger. It's input range is 5V to 10V, and is capable of charging cells at 2A. Will that chip require a 2A input regardless of Vin, whether 5V or 10V? Or, can the chip accept a...
  2. G

    Li-ion cell charging module resistor selection?

    Greetings. A vendor selling TP4056-based 5 V charging modules for Li-ion cells specified the following resistance values and resulting current for selecting the current-programming resistor: R (kΩ) I (mA) 30 50 20 70 10 130 5 250 4...
  3. LightChaser

    Appropriate charging method and wire pinout? (lithium ion battery pack.)

    Hello there. I have a lithium ion pack that I would like to use in a project to power lights for my bicycle. But I don't fully understand the pinout of the wires. Could someone explain to me how to connect wires up so I can charge this battery.? Also what type of charger I should use to charge...
  4. T

    Most efficient method to switch between 2 battery system for EV?

    Hello all! I am currently conducting my thesis research. My aim is to determine the most efficient way to combine high power density batteries with high energy density batteries in an hybrid system for powering electric aircraft. The idea is by using two different types of batteries which are...