Simple set-up
Three things needed: Otii Arc, a battery of your choice, and a battery holder.
What battery can be handled? Otii Arc can sink currents up to 2.5 A and source currents up to 5 A. Monitor load currents from 50nA to 5 A with high accuracy up to 0.1%.
Constant current
Discharge the battery with a constant current. The current will not change as the battery voltage drops. This is similar to as if there were a linear regulator as load.
Constant power
Discharge the battery with constant power. Voltage is measured and discharge current is calculated to get set power. The discharge current will increase as the battery voltage drops during the profiling.
Constant power
Discharge the battery with constant power. Voltage is measured and discharge current is calculated to get set power. The discharge current will increase as the battery voltage drops during the profiling.
Constant resistance
Discharge the battery by simulating a resistance connected to the battery. The discharge current will decrease as the battery voltage drops during the profiling.
Track
The Track option will simulate a discharge over the time you are recording. Choose “Track” if you want the tool to emulate the battery and change behavior as the energy is consumed from the battery. Position in the discharge curve will then move as your device consumes energy.
Constant
Select Constant to simulate the battery with a constant “Used capacity”. Pick a spot on the discharge curve and Otii will remain in this position, emulating the battery at this specific position (position = how much used capacity that is drawn from the battery).
Constant
Select Constant to simulate the battery with a constant “Used capacity”. Pick a spot on the discharge curve and Otii will remain in this position, emulating the battery at this specific position (position = how much used capacity that is drawn from the battery).
Parallel and series battery set-ups
Emulate set-ups with battery cells in parallel and/or series – up to 4 batteries for each set-up. Note the max Open Circuit Voltage (OCV) of 5V.
Multi set-up
Connect as many units as there are batteries that are going to be discharged. More than two Otii Arcs are easily connected with a powered USB hub. All connected batteries will be discharged with the same chosen profile.
4-wire set-up
Compensate for the cable resistance when discharging batteries with high current or if battery cables are very thin. Connect Sense+ to battery positive pole and Sense- to battery negative pole, and Otii Arc will then compensate for the voltage drop in the cables by using 4 terminal sensing.
4-wire set-up
Compensate for the cable resistance when discharging batteries with high current or if battery cables are very thin. Connect Sense+ to battery positive pole and Sense- to battery negative pole, and Otii Arc will then compensate for the voltage drop in the cables by using 4 terminal sensing.
Create, edit and share battery models
All battery profiles created with Otii Arc and Otii Battery Toolbox are .json files. Easy to edit and share! Find examples on Qoitech Github, contribute and share yours with your peers!
