1 X GOOLOO GP4000. 👉 Q: What is the capacity of the GOOLOO GP4000?. A: The nominal capacity of GOOLOO GP4000 is 24000mAh. 👉 Q: Can GOOLOO GP4000 work at minus 20 Celsius?. A: The answer is Yes. 👉 Q: Is GOOLOO GP4000 able to jump-start a boat?.