This unit can be used to check the output voltage of battery easily and quickly. In different ranges, it provides different load resistance for hte battery under test, so it can test teh voltage output ability of the tested battery under the condition of the load resistance provided, and you can jude the performance of the tested battery. The unit adopts a dual-integral A/D converter whose power consumption is little. It has the advantages of samll power consumption, quick test, high precision. It is easy to carry and simple to operate.