Go down and check coupons out. Remember to check price history if it is available. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Voltage: DC 4 – 30V, Current: 0 – 5A, Time: 0 – 99 hours, Power: 0 – 150W, Capacity: 0 – 99, 999mAh, Electrical energy: 0 – 999.999Wh
Price history and price alert
There is only one database record (it was for $1.99), so you can’t see price history chart.
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).