Choosing a battery chemistry, capacity, number of cells, and supplier for a new product is a daunting task. Why not use a UBA5 to help you? Program it to simulate the load of your product and use this to test battery samples for capacity and life time. The UBA5 can evaluate different charging algorithms and their influence on battery operation time and expected service life.
You wouldn’t design electronics without an oscilloscope, why would you design your battery circuitry without a UBA5?