Honor Play 20 HB496590EFW-F Replacement Battery 3.87V 4900mAh
This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.
WECARE5
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.
Honor Play 20 HB496590EFW-F Replacement Battery 3.87V 4900mAh - 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.
Honor Play 20 HB496590EFW-F Replacement Battery 3.87V 4900mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.87V
Amp
4900mAh
Honor Play 20 / KOZ-AL00 — 3.87V Li-Polymer Replacement Battery (HB496590EFW-F)
This is a 3.87V, 4900mAh (18.96Wh) lithium-polymer cell for the Honor Play 20 (KOZ-AL00). It replaces OEM part HB496590EFW-F and restores power to the phone's core functions — calls, display, and background services. Capacity figure comes directly from product data.
- Play 20 and KOZ-AL00 compatibility: Both model designations reference the same hardware platform. They share the same battery bay dimensions (87.00 × 62.85 × 5.00mm), the same 3.87V charging rail, and the same BMS handshake over the flex connector. One cell fits both.
- Bench tested on actual hardware: We ran this cell through full charge-discharge cycles on the Play 20 platform. The BMS accepted the cell without fault flags, the charge IC ramped current correctly, and the protection circuit tripped at expected low-voltage cutoff thresholds.
- Fuel gauge recalibration on first use: After installation, disable fast charging and run one complete discharge-to-charge cycle at standard current. The fuel gauge IC on the Play 20 is calibrated to the old cell's discharge curve. One full cycle at low current lets the coulomb counter re-anchor to the new cell before fast-charge current is applied to an uncalibrated state.
Sudden shutdown at 20–30% on the replacement cell
The Play 20's fuel gauge IC uses a stored discharge curve to estimate remaining capacity. When a new cell goes in, that curve no longer matches the new cell's actual voltage-vs-capacity profile. Under modem load or screen brightness spikes, the cell voltage drops below the BMS cutoff threshold before the gauge reaches 0% — and the phone shuts off. This is not a faulty cell; it is a calibration mismatch. Run one full discharge from 100% to automatic shutdown, then charge uninterrupted to 100%. After that cycle the coulomb counter recalibrates and the shutdowns stop.
USB fast charge not activating after a cell swap
Honor's proprietary fast-charge protocol includes a BMS negotiation step that some replacement cells do not complete on the first charge cycle. The phone defaults to standard 5V/1A USB charging as a fallback rather than throwing an error. Charge the phone once fully at standard rate — this completes the BMS initialisation sequence. On the second cycle, connect the original Honor charger and fast charging resumes at the expected rate.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Honor
- 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 Honor Play 20 keeps shutting off at around 25% after I put in the new battery — is the cell bad?
The cell is almost certainly fine. The fuel gauge IC is still running the discharge curve it mapped to the old, degraded cell, so it misjudges the voltage cliff on the new one. Under any heavy load — modem, screen, GPS — the actual cell voltage drops below the cutoff threshold before the percentage counter hits zero. Run one complete discharge from 100% down to automatic shutdown, then charge to 100% without interruption. That single cycle re-anchors the coulomb counter to the new cell and the premature shutdowns stop.
The battery percentage on my Play 20 keeps jumping around after replacing the battery — it went from 60% to 44% in two minutes without me doing anything.
This is the fuel gauge IC recalibrating in real time against an unfamiliar cell. The coulomb counter was tuned to the old battery's internal resistance and capacity curve, so early readings after a swap are unreliable. Erratic jumps — especially between 40% and 70% — are normal for the first one to three charge cycles. Do one full uninterrupted discharge-to-charge cycle and the percentage reporting stabilises as the IC locks onto the new cell's actual discharge characteristics.
Phone feels warm near the battery compartment while charging the new cell — is that normal?
Some warmth on the first few charge cycles is expected. A new high-capacity lithium-polymer cell has slightly higher impedance than a worn cell, so the charge IC pushes against more resistance and generates a little extra heat while current is flowing. If the phone is warm to the touch but not hot, and warmth fades once charging completes, no action is needed. If the back stays hot after charging finishes or the phone shows a temperature warning, stop charging and check that the battery flex connector is fully seated — a loose connection raises contact resistance and significantly increases heat.
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.
