ISDT A4 10W Battery Charger (Banggood, Aliexpress: 12500 Battery Types: NiMH, Li-lon, LiFePO4 Operating Temperature: -10℃-40℃ Dimensions: 59×63×25mm Weight: 36g Accessories: USB cable, 10500, NiCd, Smart Charger: A4 Input Power: DC 5~9V/1.5A Max Charging Power: 10w Max Charging Current: 1.00A/slot Battery Size: AAA, AA (the best price with coupon)).
Check coupons or create price alert down below. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
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.
Link: Banggood product page
1. ($17.78): Cuponation9
2. ($17.98): BGRCParts8
3. ($17.98): TTSUMMER8
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 18650, e2bcea, AFfbG10, BGAFF10OFF, BGTT10, bGhOnEy10, BGBC1, BGdragonBoat, BGRCBC7, BGRC902, BgoFErTaSchInA10, BgcLuBofErtA10, 13f142, Parts8, BGRCBC11, BGGAL8, BGSFBC1, Tabby20, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, BGJUNEGSG9, BGRCT10, BGISDTA406, 9OFFSUMMER
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Here is price history (for all/most countries) for ISDT A4 10W Battery Charger. The lowest price was: $10.99.
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)).