Quote Originally Posted by showtime View Post
Hello again mackrackit,
When we use boost circuit and in a cloudy moment the boost circuit give us what we need. But what about the current? At this moment will the current be enough to continue the charge?

Best regards
The current will be lower, but will also charge the battery, just slower.

The current from the solar cell will be lower in a cloudy condition so the over all current going to the battery will be lower.

Current is a measurement that involves Time.
I = Current
Q = electric charge in coulombs (ampere seconds)
T = time in seconds

I = Q/T

When the "boost" circuit is working it will take "TIME" to increase the voltage potential so the current over time will be lower than having a constant source. Simple circuits. http://www.intersil.com/engineeringt...ostcircuit.pdf

Basically in battery charging the only way to increase the current is to increase the voltage. If the source was the same voltage as the battery, no current will flow.

So even if the current over time is lower, it is still something. Something that would be going to waste other wise.

Feel free to say that my explanation is unclear and I will try to explain better.