Just check coupons out (with price alert and history). Best price?
Battery Capacity (mAh): 1800mah, Working Time: 13h, Battery Volatge: 5V, Battery Type: Built-in 1800mah rechargeable lithium polymer battery, Charging Time: 3h
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
High Capacity 3.7V 2400mAh Lithium Polymer Batteries For Xduoo X3 II Bluetooth Portable HD Lossless MP3/WAV/ FLAC Music Player | $29.41 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB.
Link: Banggood product page
1. ($85.84): BGBRPL2
2. ($85.84): BGHOTSHOP15
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): e2bcea, elec, BGCITYADS2019, 7bcdf9, BMPlayers, BGVDay10%off, BGAFF10OFF, BGTT10, bGhOnEy10, Email5, BGXDUOOX32, BGSS10%SW, 7d18f7, bgshOOp10, BGELIG0920, BG11SHOP, BG11PP12, BG11PP7, BGXDX3II12, 13f142, BGCuponation10, 6GSGIT, BG53e9c8
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – XDuoo X3II Music Player ($-3)
Price history and price alert
Not enough data to show price history chart… $85.84 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).