charging module

  1. 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...
  2. Mally110

    Help, underwater 18v alarm

    Looking for some help and guidance on a personal project for my sport. I play underwater rugby, at international level, the referees in this use a cable operated buzzer system. Now this is a pain. I've designed a small(ish) remote buzzer that will remove all cables to the surface. My only issue...
  3. Carlosonline

    Li-Ion Battery Managment IC Issue

    Hi, I would appreciate if someone would be able to comment/advice on the following matter. I have been looking around for an IC that would charge and balance Li-Ion cells 2-3 of them in series. It seems that the balance feature is absent in most cases. MCP73841 appears to provide most of the...
  4. G

    Multipoint Charger for a RC car

    Hi all , Im working on a little project, a RC car witch is powered with a mobile phone power bank . Power bank will supply power to a H-Bridge wich will supply power to the motors and a renesas sakura board (wifi controlled) . The power bank is charged with a USB cable while not running and...