1.How do you charge a lithium battery with a solar panel?

   Lithium batteries should be charged by first applying a constant charging voltage

(similar to the bulk charging stage) and then, when the battery has almost reached a

full charge state, maintaining that voltage but allowing the charging amperage to taper

off as the charge completes.Using an soalr panel controller is essential.

2.How many amps solar regulator  do I need to charge a 12 volt battery?

   A 12-volt automotive battery, for instance, takes a while to charge. In fact, fast

charging for this kind of battery is not recommended. 10 amps are the recommended

current. This is a slow charge.

3.What happens if you charge an AGM battery with normal charger?

       Overcharging an AGM battery can lead to reduced battery life. Many modern MPPT charge

controllers allow you to select whether you’re charging an AGM battery,a lithium

battery or a flooded cell option.