Thanks! yes I purchased a charger from their website so i would assume thats for the lithium….
when i turn on my helix 7 with the battery at 100% charged AND plugged in to the charger it reads 12.5V (100% battery on helix) but when I unplug it from the charger and am just running it off the 100% battery the voltage drops to 11.7 (helix reads 40% battery).
Ill give it a few charge cycles and report back.