[DannoXYZ]

Yes, get multimeter AND battery charger linked above. Then keep it continually connected to battery. Might be able to save that battery if you keep it topped off for a week.

Here’s thing with mechanical & electrical systems. They tend to be binary in behavior. They work or they don’t, that’s it. Like headlight is on or it’s off, nothing in between. Flipping light-switch on and off 10,000 times will still never turn on a burnt-out bulb. Either you have enough gas in tank to run, or you don’t. Either bike is going to start with choke in 5-sec. or it won’t. If it doesn’t, somethjng’s wrong and it’s not going to start no matter how long you crank it. You have to stop beating your head against wall (or dead horse).

STOP doing what doesn’t work after 2nd or 3rd attempt and try something else. That something else is testing, measuring systems to see what’s wrong and fixing it. The faster you change course, the faster you’ll get it fixed and working properly. So... if it doesn’t start on 2nd attempt, test:

- how much petrol do you have in tank?
- how old is petrol?
- is there internal filter in fuel line?
- is filter clean or clogged?
- is your petcock getting vacuum from carbs?
- does your petcock actually flow petrol when vacuum applied?
- how many volts at battery when cranking?
- how many volts at ignition coils when cranking?
- do you get spark jumping across plugs when cranking?
- carbs been professionally refurbed & restored to factory-fresh condition with new innards?

These are measurable metrics that will tell you if conditions are correct for bike to start. Each and every one of them must be perfect in order for bike to start. If any one of them (most likely more than one), is not correct, bike will not start. Cranking it more and more and destroying battery will not fix those conditions. Cranking over and over will not dump old petrol out of tank and pour in new. Cranking over and over will not put new plugs into engine or re-gap them properly. Cranking over and over will not scrape dried petrol varnish from interior passages of carba.

Clogged carbs are also very likely. Spray carb cleaners no longer work to remove dried petrol varnish due to removal of chlorinated compounds. They must be disassembled down to every last nut, bolt and individual components and thoroughly physically scrubbed with brushes and flossed with wire. Do search for “clean carbs ducatiman” for threads with photos on what it take to restore carbs back to factory-fresh condition.

Also do search and thoroughly read up on problems and how to properly fix them so you don’t waste time and money breaking things or making them worse. Read, read, and read some more to make sure you understand how to correctly diagnose problems. And read some more on how to fix problems that have been positively diagnosed.