ZKETech EBC-A40L Capacity Tester 0-5v 40a Charge/Discharge prismatic Step 1 you will select

Step 1 you will select Mode as C-CV (Constant Voltage)

also with built-in 1000mAh lithium battery to provide long service

and long cycle life

Specs are in the 2nd photo

ZKETech EBC-A40L Capacity Tester 0-5v 40a Charge/Discharge prismatic Step 1 you will selectThese testers are awesome and a great tool to have for battery testing. They are brand new and we use this brand here to test all of our single cell prismatic batteries. We have a large testing cabinet with dozens of these. They all have been working flawlessly for years. You can program this and connect it to your computer for full control and create charts. You can set this to charge, discharge, and recharge to properly test batteries. It will show