Samsung Galaxy Note 3 SM-N900 Replacement Battery 3.8V 3200mAh
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Samsung Galaxy Note 3 SM-N900 Replacement Battery 3.8V 3200mAh - is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
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
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
⚠️ 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.
Samsung Galaxy Note 3 SM-N900 Replacement Battery 3.8V 3200mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.8V
Amp
3200mAh
Samsung Galaxy Note 3 SM-N900 / SM-N9005 — 3.8V Li-ion Replacement Battery (B800BE)
This is a 3200mAh, 3.8V lithium-ion cell that replaces the original B800BE battery in the Samsung Galaxy Note 3. It fits the SM-N900 and SM-N9005 variants, along with Galaxy Note III hardware sold under regional model numbers. The cell matches the original's physical dimensions at 80.60 × 53.40 × 5.30mm and slots into the same removable battery bay.
- SM-N900 and SM-N9005 compatibility: Both variants use the same B800BE form factor, voltage rail, and connector orientation. The BMS communication between battery and charge IC is identical across these two boards, so the same cell covers both without modification.
- Bench tested on actual hardware: We ran this cell on an SM-N9005 board and confirmed the BMS handshake completed correctly, charge IC accepted the cell without error flags, and cutoff voltage held at the expected low-cell threshold under load.
- Fuel gauge recalibration on first cycle: On first use after installation, disable fast charging and run one full discharge down to auto-shutdown, then charge to 100% on standard current. This lets the coulomb counter recalibrate against the new cell's discharge curve before high-current charging pushes current into an uncalibrated state.
Why the Note 3 reports wrong battery percentage after a cell swap
The Galaxy Note 3 uses a fuel gauge IC that tracks charge state by counting coulombs against a learned discharge curve from the old cell. When you install a new cell, that stored curve no longer matches the actual cell chemistry, so the reported percentage drifts — often reading full when the cell is partially charged, or dropping suddenly near 20–30%. One complete discharge-charge cycle on standard current rewrites the learned curve to match the new cell. After that cycle, percentage readings stabilise.
Sudden shutdown at 20–30% on the replacement cell
This is a voltage cliff issue, not a capacity fault. Under heavy load — modem transmitting, screen at full brightness, or a background sync burst — the cell voltage drops sharply below the threshold the charge IC uses to trigger shutdown, even though the fuel gauge still shows charge remaining. The fuel gauge and the actual cell voltage diverge when the coulomb counter is running an old calibration. Run one full discharge to auto-shutdown, then charge to 100% at standard current; the fuel gauge IC re-anchors its low-voltage cutoff estimate to the new cell's actual curve. Shutdowns at mid-percentage should stop after that single calibration cycle.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Samsung
- Manufacturer: CS
- Series: X-Longer
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
The Note 3 won't power on at all after the new battery sat in a drawer for a few months — is the cell dead?
It's almost certainly a BMS lockout, not a dead cell. When cell voltage drops below roughly 2.5V during storage, the battery management system trips a protection circuit and refuses to respond to a normal power-on signal. Connect the phone to a wall charger — not a PC port — and leave it for 20–30 minutes without pressing any buttons. The charge IC will trickle current into the cell until voltage climbs above the BMS recovery threshold, at which point the phone will begin a normal boot sequence.
Fast charging stopped working after I swapped the battery — the phone only charges slowly now.
On the first charge cycle after a cell swap, the Note 3's charge IC sometimes defaults to standard current because it hasn't yet validated the new cell's impedance profile. This is normal behaviour on the first cycle, not a fault with the battery. Charge the phone fully on standard current, discharge it completely to auto-shutdown, then reconnect to the fast charger. Most users see fast charge resume correctly at the start of the second cycle once the charge IC has logged the new cell's baseline resistance.
The battery percentage is jumping around erratically — going from 45% to 62% and back without me doing anything.
The coulomb counter in the Note 3's fuel gauge IC is recalibrating against the new cell's discharge curve, and until that process completes, reported percentage can oscillate by 10–20 points under changing load. This is a software-side calibration issue, not a fault in the cell itself. Let the phone run through one uninterrupted discharge — screen on, normal use, no top-up charges mid-cycle — all the way to auto-shutdown, then charge to 100% without interruption. The fuel gauge anchors its model to real discharge data during that cycle, and erratic percentage readings resolve once the full cycle is complete.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
