[EU Direct] Renogy RBM500 500A Battery Monitor High and Low Voltage Programmable Alarm Voltage Range 10V-120V Compatible with 12V Lithium Sealed Gel Batteries.
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Aliexpress
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Banggood
Banggood warehouse is located in Europe 
. I don’t think there is an active coupon right now – at least in my database. I’m not sure about the price, coz I have only 1 record(s) in my database.
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!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGAUGUST8
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was $96.91).
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)).