Lifespan 3, Peak Current 500A, Capacity 13, Power Indicator Light Included(5 grades), Engine Starting Times 20~30 times, 19V/3.5A, 800mAh, Working Temperature -30℃~+70℃, 000 times, 12V/10A, Input 15V/1A, Weight 420g, 4~5h(5V/2A), Full Charging Time 2.5~3.5h(15V/1A), Start Current 250A, Brand CARKU(from Xiaomi Youpin), Material ABS, Protection 8 protections, Output 5V/2.1A, Size 160*75*28mm, LED Flash Light Included.
Price history, coupons and price alert are available on this page. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($56.15): BGCARKU11
2. ($63.35): BgAuMotor
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG249CAR, AM15prime, BGCar6699, BGCARKU138
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi CARKU Car Jump Starter 13800mAh? There we go. The lowest price was: $56.15.
Price records source(s): Banggood
Click on image to enlarge. 
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)).