Hi to all.
I am using alum battery for last 2 years and am very pleased how this works.
There are bunch of infos on internet but shortly, this type of rechargeable battery
acts like super capacitor with much lower discharge rate.
I have 300W solar panel hooked up to 55Ah alum battery ( former lead acid car starter ) and with half sunny day, i can store enough power to run 30W load for the rest of the day ( night ). Of course, charging depends on bunch of situations but the main thing is that this battery type charges much quicker then standard lead acid one and i have test it mostly on cloudy weather. Btw. if necessary i can add another one.
I want to power my stepper motor electronics from this battery but the main thing is that i want to run it 24/7 so i need to have some regulator which will provide constant output for stepper motor driver and arduino. Let's say some battery management system. As you can guess, i would like to have constant stepper movement, without drops, until there is enough power. After power drops to lets say 9V, system should make automatic shutdown. When the power is restored everything starts from beginning. At 9V, there is enough power to run 30W for next hour or more.
The motor that am planning to use is a geared stepper 1.8 deg, 3A.
What would be the best solution for this ?