Register to reply 
How long does it take to charge a 230CCA car battery? 
Share this thread: 
#1
Apr1310, 03:57 PM

P: 2

I have a 230 CAA car battery, and 2 solar panels in a parallel circuit (one is 15V, 300mA, 4.5W, the other is 15V, 125mA, 1.8W). I know that these are under optimal conditions, so please assume that they are. How long would it take to charge my car battery with these solar panels?



#2
Apr1310, 05:36 PM

Mentor
P: 22,235

A standard car battery is about 40 amphours, so if you get about the right voltage from your panels, that's 40/(.3+.125) = 94 hours at peak power. You'll be lucky to get that 4 hours a day on average unless you aim the cells, so that's about 23 days.



#3
Apr1310, 06:57 PM

P: 2

How can I find out how many amphours a car battery has for sure?



#4
Apr1310, 08:40 PM

Mentor
P: 22,235

How long does it take to charge a 230CCA car battery?
Find the model number and look it up online.



Register to reply 
Related Discussions  
How does a battery loose its charge?  Engineering, Comp Sci, & Technology Homework  3  
Charge on capacitors each with a battery  Introductory Physics Homework  8  
A very long uniform line of charge has a charge per unit length of 4.82 uC/m  Introductory Physics Homework  1  
Tubine to charge battery  Electrical Engineering  4 