$190.99 – Communication Mode: RS232/RS485, Measuring precision Current: ±0.05%+5mA, Overpower: Single channel: 410W, Load voltage: DC 1 -150 V, Power supply input fuse: 0.5, Weight: Approx.4000g/141.1oz, Load current: 0-40A, Control precision Current: ±0.05%+5mA, Measuring Precision Voltage: ±0.05%+5mV, Over temperature: 85℃, Size: 300*90*180mm/11.8*3.5*7.1in, Power consumption: < 20 W, Load power: 0-400W, Overvoltage: When the voltage is more than 152V /the load is turned off load, Control precision Voltage: ±0.05%+5mV.
When I was updating this page the price was $190.99 for KP184 DC Load Battery Capacity Tester (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest price update (UTC time):
Banggood ($190.99)
Banggood warehouse is located in China. CouponsFromChina software could not find any coupon for this product in Banggood. The question is – is it a good price? Well, this price is higher than average price ($154.91)
Link: Banggood product page
Price: $190.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 7d18f7, 13f142, BGCuponation10, 6GSGIT, BG2f9bd9, BGTools8, BGGines, JanBGCoupon8, BGSaleFeb8, BGSaleAD, BGd9aaa6, BG20236Tool
(there’s a little possibility that old coupon will work)
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.
Price history and price alert
Price history (for all/most countries) for KP184 DC Load Battery Capacity Tester is here. The lowest price was: $149.75.
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)).