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Best electric core BN54 built-in Battery for Redmi note 9 (only Deliver to some countries)

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product Description
Best electric core BN54 built-in Battery for Redmi note 9 (only Deliver to some countries)
We can send batteries to most countries in the world, but a few countries can't send batteries.
Please click seller guarantees on the right of the Feedback to see if your country can send battery.
If your country can't send batteries but you still buy them,we will only refund you 85% of the sum.
Battery shipping is only shipping method to send battery.
Each battery consists of three parts——electric core, shell and Circuit protection board.
This item has original electric core.
Compare to copy battery this battery has much more Battery capacity.
We use professional battery testing equipment(EBC-A10H) to test our battery one by one before shipped out.
The test steps are as follow:
1. Set Mode : D-CC Mode, Test Val : 0.2C, Cutoff Volt : 2.75V to discharge.
2. Set Mode : C-CV Mode, Test Val : 0.5C, Voltage : 4.4V, Cutoff Curr : 0.05 to charge, it normally takes about 2 hours to get charge capacity.
3. Set Mode : D-CC Mode, Test Val : 0.2C, Cutoff Volt : 2.75V to discharge, it normally takes about 5 hours to get discharge capacity.
Finally, we can judge whether the battery is normal and whether the capacity is sufficient by test duration, curve and test results.
Compatible with:
Redmi note 9
Specifications
Battery Model: BN54
Product attributes: Best  electric core
Battery Type: Li-ion,Li-polymer
Battery capacity: 4920mAh
Voltage limit: 4.4V
Quality Grade: Best Quality
Battery Country of Origin: ShenZhen,China
Frequent questions
1# What is the battery capacity?
Answer: Picture 4 is test report. It  display 4918 mAh. We spent ten hours to test his charge-discharge-recharge performance.
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