Discharge Current: 0.1A-1.5A, Max Charge Capacity: DC 500W, NiMH: 1-16S, Charge Current: 0.1A-20.0A, ULiHV: 1-7S, Support Battery: LiFe /Lion /LiPo 1-8S, Weight: 160g, Ouput Voltage: DC 1-35V, Max Discharge Capacity: 15W, Pb: 1-12S, Input Voltage: DC 10-34V.
Basically copy coupon, view price history or create e-mail price alert. What is the best price?
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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
1. ($65.92): Cuponation9
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGRCParts8, BGSFBC1, BGISDTAir803, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, BG8RCToy, hoNEYbGdeAlS, BGRCT10, BGJUNEGSG9, BG8ReviTrage, COUPONSDE1wk
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – ISDT Air8 BattAir 500W 20A RC Balance Battery Charger With 2Pcs BattAir Plugin [EU] ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for ISDT Air8 BattAir 500W 20A RC Balance Battery Charger With 2Pcs BattAir Plugin? There we go. The lowest price was: $50.99.
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)).