Samsung EB-BG781ABY Battery Compatibility List: S20 FE, A52 & A52s Donor Guide

Yes, the Samsung OEM battery part number EB-BG781ABY is 100% interchangeable across 5 high-volume Samsung smartphones: the Galaxy S20 FE 4G (SM-G780F/SM-G780G), Galaxy S20 FE 5G (SM-G781B/SM-G781U), Galaxy A52 4G (SM-A525F), Galaxy A52 5G (SM-A526B), and Galaxy A52s 5G (SM-A528B). All 5 models share the exact same 4,500 mAh pouch cell, 3.86V nominal chemistry, 6-pin FPC connector header, and battery tray dimensions.

For repair shops, parts distributors, and refurbishers, the EB-BG781ABY is one of the most versatile battery SKUs in Samsung's entire ecosystem. Sourcing or stocking this single OEM battery allows you to service five different mid-range and flagship-tier models without holding duplicate inventory.

In this technical donor guide, the Partify hardware engineering team details the verified device matrix, electrical specifications, charging safety thresholds, and authentic OEM identification markers for EB-BG781ABY.

The Complete EB-BG781ABY Compatible Device Matrix

The table below provides the full, verified list of Samsung Galaxy models powered by the EB-BG781ABY battery pack:

┌────────────────────────────────────────────────────────────────────────┐
│               SAMSUNG EB-BG781ABY COMPATIBILITY MAP                    │
├────────────────────────────────────────────────────────────────────────┤
│                       OEM BATTERY: EB-BG781ABY                         │
│                    4,500 mAh / 3.86V / 17.33 Wh                        │
│                                │                                       │
│         ┌──────────────────────┴──────────────────────┐                │
│         ▼                                             ▼                │
│   GALAXY S20 FE FAMILY                        GALAXY A52 FAMILY        │
│   ├── S20 FE 4G (SM-G780F)                    ├── A52 4G (SM-A525F)    │
│   └── S20 FE 5G (SM-G781B)                    ├── A52 5G (SM-A526B)    │
│                                               └── A52s 5G (SM-A528B)   │
└────────────────────────────────────────────────────────────────────────┘

Technical Specifications & Electrical Safety Ratings

When cross-swapping batteries or purchasing replacement stock, always verify that the cell meets Samsung's exact factory electrical parameters:

┌────────────────────────────────────────────────────────────┐
│          EB-BG781ABY OEM ELECTRICAL SPECIFICATIONS         │
├────────────────────────────────────────────────────────────┤
│  Samsung Service Pack SKU  ▶ GH82-24205A / GH82-24206A     │
│  Typical Capacity          ▶ 4,500 mAh (17.33 Wh)          │
│  Rated (Minimum) Capacity  ▶ 4,370 mAh (16.82 Wh)          │
│  Nominal Voltage           ▶ 3.86 V                        │
│  Charge Cut-Off Voltage    ▶ 4.43 V                        │
│  Cell Chemistry            ▶ Lithium-ion Polymer (LiPo)    │
│  Standard Cell Sizing      ▶ 2-ICP6/64/79                  │
│  Dimensions (L × W × T)    ▶ 79.0 mm × 63.8 mm × 5.3 mm    │
│  Weight                    ▶ 58.5 g ± 1.5 g                │
│  FPC Connector Header      ▶ 6-Pin Board-to-Board Pitch    │
│  Integrated Thermistor     ▶ 10 kΩ NTC @ 25°C              │
└────────────────────────────────────────────────────────────┘

Fast Charging Support & Protocol Compatibility

For broader Samsung platform compatibility, review our Samsung Galaxy Parts Compatibility Master Guide and Galaxy A52 vs A52s Parts Compatibility Guide.

Donor Swapping Rules: S20 FE ⇄ Galaxy A52 / A52s

When harvesting an EB-BG781ABY from a donor phone or moving it between devices, follow these workshop rules:

┌────────────────────────────────────────────────────────────┐
│                 DONOR SWAPPING WORKFLOW                    │
├────────────────────────────────────────────────────────────┤
│ 1. Discharge donor phone below 20% before extraction        │
│ 2. Apply isopropyl alcohol (IPA 99%) around adhesive edges │
│ 3. Use suction and plastic pry card — NEVER metal tools    │
│ 4. Inspect battery pouch for dents, creasing, or puncture  │
│ 5. Clean old adhesive residue from receiver midframe       │
│ 6. Apply pre-cut OEM acrylic battery adhesive tape         │
└────────────────────────────────────────────────────────────┘

1. Zero Calibration or Software Pairing Required: Unlike Apple iPhone batteries which require BMS microcontroller transplants to clear non-genuine warnings, Samsung Galaxy Android devices do not serialize the battery BMS. Swapping an EB-BG781ABY is 100% plug-and-play. Android OS and Samsung One UI will immediately report accurate battery percentage and battery health stats.
2. Adhesive Pull-Tabs: Galaxy S20 FE and Galaxy A52 models feature pull-tabs under the battery. If the pull-tab breaks during removal, apply 99.8% isopropyl alcohol along the outer rim of the battery tray to soften the pressure-sensitive adhesive. Never pry directly against the lithium pouch with sharp metal spudgers.

For the core 5 electrical rules of all lithium phone cells, see our Smartphone Battery Cross-Reference Guide.

How to Spot Fake vs. Genuine OEM EB-BG781ABY Batteries

Counterfeit Samsung batteries flood third-party marketplaces. Use these three physical tests to verify authenticity:

┌────────────────────────────────────────────────────────────┐
│              AUTHENTIC OEM VS. COPY BATTERIES              │
├──────────────────────────┬─────────────────────────────────┤
│ AUTHENTIC SAMSUNG OEM    │ COUNTERFEIT / LOW-GRADE COPY    │
├──────────────────────────┼─────────────────────────────────┤
│ Weight: 58g – 60g        │ Weight: < 48g (low-density)     │
│ Crisp 2D QR DataMatrix   │ Blurry or printed dummy QR      │
│ Real 10kΩ NTC Thermistor │ Fixed 10k resistor (no thermal) │
│ TI / Maxim Fuel Gauge IC │ Unbranded generic controller    │
└──────────────────────────┴─────────────────────────────────┘

• Weight Verification: Authentic OEM EB-BG781ABY packs weigh between 58.0g and 60.0g. Fake copy batteries typically weigh 44g to 48g due to lower active lithium density and substandard separator films.
• QR Code Laser Engraving: Genuine Samsung Service Pack cells feature a crisp, laser-etched 2D DataMatrix code next to the serial number. Counterfeit batteries use screen-printed dummy matrices that fail to scan.

Frequently Asked Questions (FAQ)

Can I install an S20 FE battery into a Galaxy A52 4G?

Is the Galaxy A52s 5G battery the same as the Galaxy A52 5G battery?

Does Samsung display a "Non-Genuine Battery" warning after replacing the EB-BG781ABY?

What is the difference between EB-BG781ABY and EB-BG780ABY?

Source Verified EB-BG781ABY Batteries on Partify

Stop sorting through conflicting parts listings and unreliable aftermarket suppliers. Use the Partify Hardware Platform to verify component cross-compatibility, locate genuine donor phones, and inspect verified part specs:

• Check Battery Cross-Reference: Partify EB-BG781ABY Verified Compatibility Matrix
• Explore Samsung Parts: Partify Samsung Replacement Parts Directory
• Compare Hardware Specs: Galaxy A52 vs A52s Hardware Comparison

Partify is the world's most accurate smartphone hardware cross-compatibility database, built by technicians for technicians.