Features: Lightweight and portable, stable and reliable, wear resistant and can provides long service time. The structure of the layout is reasonable, easy to operate and practical. Large LCD display, you can see the voltage and remaining electric quantity clearly. Equipped with 5-stage of remaining electric quantity display signal, respectively are 10%, 25%, 50%, 75%, 100%. 8.5V-12.6V voltage testing measurement ranges, suitable for testing lithium battery(11.1V), 3.7V 3S batteries. Two types optional, you can choose one USB recharging port or dual USB recharging ports according to your demands.