Size: 68*49*26 mm, NiMH/Cd(1-16S), USB Output: 5V 2.1A, 0.1-10A(Internal consumption mode), Charge Current: 0.1-10A, Input Voltage: DC 7-28V, Discharge Current: 0.1-2A(Recycling mode), Max Discharge Capacity: 20W, Output Voltage: 1-28V, Max Charge Capacity: 150W, Weight: 80g, Pb(1-10S), Supported Batt. Type: LiFe/Lilon/LiPo/LiHv (1-6S).
Basically copy coupon, view price history or create e-mail price alert. What is 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 price update (UTC time):
Banggood
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): Charger12, BGM615, BGM6MINI, BGM68, BGToolkitRCM6, BGTM612, 502C6B, 0e7f33, FBCOUPON1, BGM6July, BGToolkitRCM61, BGM67, BGAFF10OFF, BGCuponation10, BGDAVIS, BGHONEY2110, 13f142, Parts8, BGRCParts8, BGSFBC1, Tabby20, BG1efeb0, 8Couponsde, 8BGwbg2204, hoNEYbGdeAlS, Cuponation9
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – ToolkitRC M6 DC 150W 10A 2-6S RC Battery Balance Charger [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for ToolkitRC M6 DC 150W 10A 2-6S RC Battery Balance Charger is here. The lowest price was: $21.24.
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)).