I have built my own bike using a scooter rear wheel on top of the rear wheel of my bike. It pulls a trailer fill of sla batteries and does okay but now I am building a nimh battery pack. My question is this... how the heck can i charge the batteries using a sla float charger. I know it is a stupid thing to do but I still want to do it.
How can I calculate how much current to put into the battery. I get the 1.5 rule, but how do I know how much has been drained from the battery. Suppose I ride an 12ah hour battery thirty minutes how can I tell how much current has been used. Can I read the voltage and figure an approximate amps used.
Im pretty dumb here so keep it simple please.