Here is a detailed English product description for the Amazon Kindle Paperwhite 1st Gen Battery (Model: EY21 / MC-354775-03):

Replacement Battery for Amazon Kindle Paperwhite 1st Gen (Model EY21 / MC-354775-03)

Product Features:

• Compatible Model: Amazon Kindle Paperwhite 1st Generation (2012)

• Battery Model: MC-354775-03 / EY21

• Battery Type: Rechargeable Lithium-ion (Li-ion)

• Capacity: 1420mAh (5.25Wh)

• Voltage: 3.7V

• Quality Certification: CE, RoHS, FCC Certified for Safety

• Condition: 100% Brand New, Factory Tested

Product Description:
This high-quality replacement battery is designed for the Amazon Kindle Paperwhite 1st Generation (2012, Model EY21), ensuring long-lasting performance and extended reading time. The advanced lithium-ion technology provides a stable power supply, improving your device’s efficiency and lifespan.

Key Benefits:
✔ High-capacity 1420mAh battery for prolonged reading sessions
✔ Stable voltage ensures safe and reliable device performance
✔ No memory effect – supports partial charging without reducing battery lifespan
✔ Built-in safety protections against overcharging, overheating, and short circuits