I recently purchased this battery to go with a FT-818 that I have been playing with the last month. It is a Bioenno Model# BLF-1203A which has a 12 volt 3 ah rating. Hamsource was having a Facebook special on it for $55. Hamsource webpage
I decided to test it out on a West Mountain CBA IV battery analyzer mainly so I could see the discharge curve everyone brags about on these batteries. Below are the results. You can see that the discharge is much flatter than a lead-acid battery and the steep drop off at the end of life. At the end of the test you can see the voltage dropped to zero! That appears to be a function of the battery management board built into the battery module. As soon as the charger was plugged back in the battery woke up.