"We need to find an 'inspired' Microcontroller Engineer (meaning EE & CS
skills) who wants to design PIC (or similar) microcontroller into a charge controller with real time clock, alarm (piezo buzzer, etc), voltage readout, and maybe temperature and current monitoring. [adding more features adds some cost in hardware, and tedious software testing]
I know bits and pieces of this (strong enough in hardware part), but am far too weak in C or Assembly language programming to get it done in timely manner.
Maybe we could form an 'Open Source' team to design this - similar to the project for PWM motor controllers called OSMC (Open Source Motor Controller).
In that case, a few guys collaborated on electrical hardware and software design for a microprocessor controlled, Pulse Width Modulated DC motor controller, for hobby Robotics competition."
Or you could buy a Soneil Charger for $100.
Geof Thompson