Instructions on Amazon, where I bought this product, are incomplete. Are the instructions, below, correct?

Program Instructions: DROK DC8-63V Digital Battery Capacity Tester Indicator

1) Disconnect power to the indicator.
2) Press and hold Pwr button.
3) Connect power to the the indicator.
4) Release Pwr button, then the screen will
display “Pbx” or “Lix”
5) Press/Release Pwr button to select
battery types (listed below.)
6) After battery type selection, Disconnect,
then connect power to indicator.
(Pb is lead-acid, Li is lithium battery, X is the number of cells)
Pb1: Pb12V lead-acid battery
Pb2: Pb24V lead-acid battery
Pb3: Pb36V lead-acid battery
Pb4: Pb48V lead-acid battery
Li2: 2 pcs lithium batteries
Li3: 3 pcs lithium batteries
…
Li9: 9 pcs lithium batteries
LiA: 10 pcs lithium batteries
Lib: 11 pcs lithium batteries
LiC: 12 pcs lithium batteries
Lid: 13 pcs lithium batteries
LiE: 14 pcs lithium batteries
LiF: 15 pcs lithium batteries