I've done it with no problems, but I don't know if that means it's always ok to do it or not. It may depend on how long it takes your phone to charge, as well as how good your car battery is.
by connecting it with the red + black wires
You cannot charge a battery without a battery charger or having it charged by the alternator in your vehicle while it is running.
you can not charge it without a charger it will die out without one
the point of a charger is to charge the product
u can't, u have to have a CHARGER to CHARGE something
There is no safe way to charge a phone without a charger made specifically for that phone/battery
Yes, a cellphone can be charged, with the proper adaptor, without a vehicle's engine running. The electrical current [measured and refered to in Amps, usually milliamps] required is well within the capacity of a vehicle battery in good condition and charge.
you dont
You can't. Buy a new charger online.
Go to a store or something and ask for a new battery for your phoNE. THTS ALL
With frute🍎
You can with a USB cable