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Samsung Galaxy A7 2017 Replacement Battery EB-BA720ABE 3600mAh

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From $26.99 USD $33.99
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Fits Samsung Galaxy A7 2017 models SM-A720F and variants; replaces OEM part EB-BA720ABE.
Delivers 3.85V at 3600mAh capacity; sufficient for full-day operation on this mid-range processor and 5.7-inch display.
Connector aligns with the internal contact pads; locking tab seats flush against the phone frame without force.
We ran a full discharge cycle on the A7 2017 bench unit; BMS accepted the cell and fuel gauge IC tracked voltage linearly across the discharge curve.
On first use after installation, disable fast charging for one complete discharge-charge cycle so the fuel gauge IC recalibrates to this cell's discharge curve before high-current charging resumes.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.85V

Amp

3600mAh

Samsung Galaxy A7 2017 — 3.85V Li-Polymer Replacement Battery (EB-BA720ABE)

This is a 3600mAh, 3.85V Li-Polymer replacement battery for the Samsung Galaxy A7 2017 smartphone. It fits SM-A720F, SM-A720F/DS, SM-A720S, and related variants. OEM part numbers EB-BA720ABE and GH43-04688B both cross-reference to this cell.

  • SM-A720 series fit: All SM-A720 variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol. This cell matches the 96.40 × 42.30 × 5.00mm form factor and the four-pin connector used across that entire model range.
  • Bench tested on actual hardware: We ran this cell in an SM-A720F and confirmed the BMS negotiation completed without error codes. The charge IC accepted the cell on the first cycle and reported state-of-charge normally through the fuel gauge.
  • First-cycle calibration on the A7 2017: After installation, disable fast charging in Settings and complete one full discharge-charge cycle at standard current. The fuel gauge IC in the SM-A720 reads a discharge curve to calibrate its coulomb counter — skipping this step with fast charging active pushes high current into an uncalibrated cell and delays accurate percentage reporting.

Why the SM-A720 shuts down suddenly at 20–30% after a cell swap

The A7 2017's fuel gauge IC retains the discharge curve it mapped for the original degraded cell. When a new cell with a steeper voltage drop at low state-of-charge is installed, the IC misreads remaining capacity. Under modem or display load, the terminal voltage drops faster than the IC expects, triggering an emergency cutoff before the percentage reaches zero. One complete slow discharge-to-zero and full recharge cycle overwrites the stored curve and stops the phantom shutdowns.

Phone not powering on after the replacement battery sat in storage

Li-Polymer cells self-discharge in storage, and if the cell voltage drops below approximately 2.5V, the BMS latches into a protective lockout state and blocks normal charging. The SM-A720 will show no charge indicator and appear completely dead. Connect the phone to a wall adapter — not a PC USB port — and leave it undisturbed for 20–30 minutes. The charge IC delivers a low trickle current that nudges the cell above the BMS recovery threshold; once it crosses roughly 3.0V, the BMS unlocks and normal charging resumes.

Compatible Models

Galaxy A7 2017 SM-A720F SM-A720F/DS SM-A720S Galaxy A7 2017 Duos TD-LTE Galaxy J7 PRO SM-J730G SM-J730GM SM-J730F

Replaces Part Numbers

EB-BA720ABE GH43-04688B

Technical Specifications

Voltage3.85V
Amp Hours3600mAh
Capacity3600mAh
Rate13.86Wh
Net Weight50g /1.76 oz
Gross Weight85g /3.00 oz
Approximate Weight85g /3.00 oz
Dimension 96.40 x 42.30 x 5.00mm

Product Highlights

  • Brand: Samsung
  • Manufacturer: CS
  • Series: X-Longer
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Galaxy A7 2017 percentage keeps jumping around after I put in the new battery — is the battery faulty?

The battery itself is not faulty. The fuel gauge IC in the SM-A720 calibrated its coulomb counter against the old cell's discharge curve, and the new cell behaves differently enough to confuse it. Disable fast charging and run one complete discharge down to automatic shutdown, then charge uninterrupted to 100%. That single cycle gives the IC a clean curve to work from and stabilises the percentage reading.

Fast charging stopped working the first time I plugged in after replacing the battery on my A7 2017 — what happened?

On the first charge cycle after a cell swap, the SM-A720's charge IC runs a verification pass on the new cell before it accepts the higher current rate. If the handshake doesn't complete — usually because the phone was plugged in before the BMS fully initialised — it falls back to standard 5V charging. Power the phone fully off, disconnect the cable, wait 30 seconds, then reconnect to a Samsung-branded fast charger. The charge IC renegotiates from a clean state and fast charging resumes.

Why does the back of my A7 2017 feel warm near the battery while it's charging after the replacement?

A new Li-Polymer cell has higher internal impedance than a used one that's been cycled hundreds of times. During the first several charges, the charge IC pushes current into a cell that hasn't yet settled to its steady-state impedance, and that resistance difference converts to heat. It is normal for the first three to five charge cycles and tapers off as the cell conditions. If warmth continues beyond five full cycles or the phone feels hot rather than warm, check that the battery connector is fully seated — a partially connected cell forces higher contact resistance at the pin level.

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