Got my livescope working today. I powdered both the Echomap and the livescope off of 2-9ah Milwaukee lithium batteries. I ran both the Echomap and the livescope for 8 hours. I started out with 20 volts after 8 hours it only dropped to 18 volts. I was amazed. I have 2 Milwaukee chargers. And 4-9ah batteries. I was planning to run the Echomap on 2 batteries and run the livescope on 2 batteries. After today i may just let it be.