Samsung Galaxy A50 / A50s / A30 / A20 Original-Capacity Replacement Battery (4000mAh)

The EB-BA505ABU (also matching EB-BA505ABN) is a highly popular internal Lithium-ion replacement battery engineered by Samsung. Because this battery powers a massive generation of Samsung’s most successful mid-range and budget Super AMOLED devices, it is one of the most widely circulated replacement cells. An aging or degraded factory battery commonly shows severe wear signs: sudden power drops below 20%, localized heat buildup near the center chassis, or keeping the device stuck in an infinite reboot loop on the “Samsung Galaxy” startup screen. Swapping in a fresh, premium unit completely stabilizes your device’s multi-day standby lifecycle.

• Battery Model: EB-BA505ABU / EB-BA505ABN

• Battery Type: Lithium-ion (Li-ion)

• True Capacity: 4000 mAh (Typical) / 3900 mAh (Rated)

• Standard Voltage: 3.85V

• Charging Voltage Limit: 4.4V

• Fast Charge Support: Fully matches Samsung’s 15W Adaptive Fast Charging standard safely without triggering thermal safety throttling.

• Safety Infrastructure: Equipped with an original-grade double-IC Protection Circuit Board (PCB). This microchip actively filters voltage surges, prevents chemical bloating caused by overnight overcharging, and ensures accurate real-time percentage syncing to Samsung’s One UI system software.

• Device Compatibility: This 4000mAh structural profile and specific flex connector clip precisely fit:

  • Samsung Galaxy A50 (SM-A505F)

  • Samsung Galaxy A50s (SM-A507F)

  • Samsung Galaxy A30 (SM-A305F)

  • Samsung Galaxy A30s (SM-A307F)

  • Samsung Galaxy A20 (SM-A205F)

  • Samsung Galaxy A20s