This method did not end up working you need another battery which the same voltage or at least 60% of the voltage to bring it up to be able to charge. When you link them leave no longer than a few seconds at a time. Hope this helps.
It didn’t end up working your best bet is to jump it off of another battery with the same or a little bit lower voltage battery. Just don’t jump it for long like ten seconds can do the trick. My battery needed up having ten dead cells
I have a battery that won't charge at all. When I dock it it doesn't even change off the power light, like it's not detecting the battery. Only had it a short time
