Compatible with Acer

Acer Swift 3 SF314-511-51YL Replacement Battery - Replaces AP20CBL

$35.54In stock

Why this battery

Fits Acer Swift 3 SF314-511-51YL and 185+ related models, replaces OEM part AP20CBL.
11.55V and 4550mAh capacity restores full charge cycles on this Li-Polymer pack.
Connector seats into the internal slot without modification; locking tab clicks when seated correctly.
We bench-tested against a discharged OEM cell; the BMS accepted the new pack on first insertion with no fault codes.
After installation, run one full discharge to hibernate cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings.

11.55V4550mAhLi-Polymer

Fits 189 models · Replaces 1 part number

Ship from

Ships from Hong Kong Warehouse · Delivery in 28-45 days

$35.54Quantity 1

About this replacement

Acer Swift 3 SF314-511 Series — 11.55V Li-Polymer Replacement Battery (AP20CBL)

This is a Li-Polymer replacement battery for the Acer Swift 3 SF314-511-51YL, SF314-511-71VL, SF314-43-R8GG, SF314-43-R3B9, and over 185 additional Swift 3 variants. It runs at 11.55V with a 4550mAh (52.55Wh) capacity, matching the OEM AP20CBL specification. Install it when the original cell no longer holds a usable charge or the laptop drops off battery faster than expected under normal workloads.

Swift 3 SF314 platform fitment: These SF314 variants share the AP20CBL connector pinout, cell voltage rail, and BMS handshake protocol. The three-cell Li-Polymer stack runs a common 11.55V nominal across the series, so one cell revision covers all listed models without adapter or firmware change.
Bench tested on actual hardware: We ran this cell on an SF314-511 chassis and confirmed the BMS negotiated correctly with the EC, reported accurate Wh figures in the OS, and held charge through a full cycle without thermal event or cutoff interruption.
First-cycle calibration on Swift 3: After fitting the new cell, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears on first boot after every cell swap.

BIOS reporting battery health as poor immediately after fitting AP20CBL

The Swift 3 EC reads health data from EEPROM on the old cell and compares it against the new one during the first boot. A fresh AP20CBL has no cycle history, so the EC flags a mismatch and reports degraded health before any calibration has run. This is not a fault with the replacement cell. Run the full discharge-to-hibernate then uninterrupted charge cycle, and the BIOS learn routine will overwrite the stale EEPROM data with accurate readings from the new cell.

Swift 3 shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC still holds calibration data mapped to the old cell's voltage curve. Under full CPU plus display load, the new cell's actual voltage drops faster than the gauge predicts, and the EC triggers a hard shutdown before the displayed percentage reaches zero. The fix is not a battery fault — it is a calibration gap. Complete two to three full discharge-and-charge cycles so the fuel gauge IC can remap its curve to the AP20CBL cell chemistry. After the third cycle, the shutdown threshold should track accurately down to approximately 3.0V per cell.

Compatibility

Check your original model and part number before ordering.

Compatible brands

Acer

Fit Model

Swift 3 SF314-511-51YLSwift 3 SF314-511-71VLSwift 3 SF314-43-R8GGSwift 3 SF314-43-R3B9Swift 3 SF314-511-700PSwift 3 SF314-511-79X5Swift 3 SF314-511-31VMSwift 3 SF314-511-541BSwift 3 SF314-43-R4QYSwift 3 SF314-511-57W5Aspire 5 A515-45-R7TRAspire 5 A515-45-R760Swift 3 SF314-511-559DAspire Vero AV15-51-55B8Aspire Vero AV14-51-54LGAspire 5 A515-45-R8HVAspire 5 A515-45-ROXASwift 3 SF314-511-590KAspire 7 A715-43G-R7M7Aspire 5 A515-45G-R9F9Aspire 5 A515-45-R0FLAspire Vero AV15-51R-73APSwift 3 SF314-511-561NAspire 5 A515-45G-R93USwift 3 SF314-511-51A3Swift 3 SF314-511-39JLSwift 3 SF314-511-76PHSwift 3 SF314-511-52EESwift 3 SF314-43-R0CTAspire 5 A515-45-R1QDAspire 5 A515-45-R0HBSwift 3 SF314-511-54U1Swift 3 SF314-43-R26NAspire 5 A515-45-R2S9Aspire 5 A515-45-R1PDSwift 3 SF314-43-R9TTSwift 3 SF314-511-79TUSwift 3 SF314-43-R46RAspire 5 A515-45-R2VFAspire 5 A515-45-R382Swift 3 SF314-43-R9ZXSwift 3 SF314-511-54P6Swift 3 SF314-43-R6XRAspire 5 A515-45-R42FAspire 5 A515-45-R44FAspire Vero AV14-51-53YSAspire Vero AV15-51-74R5Aspire 5 A515-45-R9V3Aspire 5 A515-45-R5B9Aspire Vero AV15-51-775YAspire Vero AV15-51-38KQSwift 3 SF314-511-34WTAspire 5 A515-45-R7TYAspire 5 A515-45-R6AYAspire Vero AV15-51-73S0Swift 3 SF314-511-51VDAspire 5 A515-45G-R00ASwift 3 SF314-511-5322Aspire 5 A515-45G-R9WYSwift 3 SF314-511-50FDAspire 5 A515-45-R944Aspire 5 A515-45-R4RPSwift 3 SF314-511-57DJAspire 7 A715-43G-R8RWAspire Vero AV14-51-786LAspire 5 A515-45-R6YHAspire 5 A515-45-R6F9Aspire 7 A715-43G-R3A6Aspire 5 A515-45G-R0NPAspire 5 A515-45-R84hSwift 3 SF314-511-5412Swift 3 SF314-511-7412Swift 3 SF314-511-36TPSwift 3 SF314-511-79AKSwift 3 SF314-511-57E0Swift 3 SF314-43-R7CDSwift 3 SF314-511-77RKSwift 3 SF314-43-R1SWAspire 5 A515-45-R0QEAspire 5 A515-45-R19ASwift 3 SF314-43-R964Swift 3 SF314-511-31FSAspire 5 A515-45-R7D6Aspire 5 A515-45-R2QJSwift 3 SF314-43-R73QSwift 3 SF314-511-76S0Swift 3 SF314-43-R637Aspire 5 A515-45-R0ZDAspire 5 A515-45-R3UGSwift 3 SF314-43-R6WCSwift 3 SF314-511-7293Aspire 5 A515-45-R4CTAspire 5 A515-45-R4LJAspire Vero AV15-51-75QQAspire Vero 15 AV15-51Aspire 5 A515-45-R7KWAspire 5 A515-45-R64PAspire Vero AV15-51-52RZSWIFT 3 SF314-511-38QCAspire 5 A515-45G-R103Swift 3 SF314-511-38U6Aspire 5 A515-45-R6NZTravelMate Spin B3 TMB311RNA-32-P3MMSwift 3 SF314-511-53EKAspire 5 A515-45-R7XZAspire 5 A515-45-R6VPSwift 3 SF314-511-55YXAspire 7 A715-43GAspire Vero AV14-51-73LMAspire 5 A515-45-R8LHAspire 5 A515-45-R4G0Swift 3 SF314-511-593QAspire 7 A715-43G-R6F0Aspire 5 A515-45G-R2C9Aspire 5 A515-45-R8SLAspire Vero AV15-51-52Q3Swift 3 SF314-511-723ASwift 3 SF314-511-55CKAspire 5 A515-45G-R381Swift 3 SF314-511-579BSwift 3 SF314-511-504DSwift 3 SF314-511-77VRSwift 3 SF314-511-787MSwift 3 SF314-43-R0NSAspire 5 A515-45-R68GAspire 5 A515-45-R0QQSwift 3 SF314-43-R8HRSwift 3 SF314-511-51VQSwift 3 SF314-43-R2BJAspire 5 A515-45-R9R7Aspire 5 A515-45-R1YRSwift 3 SF314-43-R29NSwift 3 SF314-511-38YSAspire 5 A515-45-R0MAAspire 5 A515-45-R3ARSwift 3 SF314-43-R0C7Swift 3 SF314-511-5454Aspire 5 A515-45-R83BAspire 5 A515-45-R48YAspire Vero AV15-51-58JCAspire Vero AV15-51-518JAspire 5 A515-45-R498Aspire 5 A515-45-R5EPAspire Vero AV15-51-73F1Aspire Vero AV15-51-781NSwift 3 SF314-511-361CAspire 5 A515-45-R8LYAspire 5 A515-45-R6DTAspire Vero AV15-51-50VMAspire 5 A515-45G-R3YLSwift 3 SF314-511-54G2Aspire Vero AV15-51-7940Aspire Vero AV14-51-59UWAspire 5 A515-45-R9GZAspire 5 A515-45-R3ZWAspire 7 A715-43G-R83YAspire Vero AV14-51-79KCAspire 5 A515-45-R67BAspie Vero AV15-51-31UKSwift 3 SF314-511-70JYAspire 7 A715-43G-R9MKAspire 5 A515-45G-R455Swift 3 SF314-511-55X6Swift 3 SF314-511-77J7Swift 3 SF314-511-754NSwift 3 SF314-511-56QFSwift 3 SF314-511-7089Swift 3 SF314-511-720YAspire 5 A515-45-R02NSwift 3 SF314-43-R7J1Swift 3 SF314-511-31PXSwift 3 SF314-43-R1UQAspire 5 A515-45-R209Aspire 5 A515-45-R1EKSwift 3 SF314-43-R9GUSwift 3 SF314-511-55FNSwift 3 SF314-43-R3CGAspire 5 A515-45-R2HJAspire 5 A515-45-R2SPSwift 3 SF314-43-R5N8Swift 3 SF314-511-5673Swift 3 SF314-43-R68CAspire 5 A515-45-R8KCAspire 5 A515-45-R3XUSwift 3 SF314-43-R38HSwift 3 SF314-511-53W2Aspire 5 A515-45-R5MWAspire 5 A515-45-R4TMAspire Vero AV15-51-78G8

Part Number

AP20CBL

Specifications

Battery typeLi-Polymer

Voltage11.55V

Capacity4550mAh

Wh52.55Wh

Dimensions260.80 x 88.30 x 5.40mm

Weight

Connector

ChemistryLi-Polymer

Shipping and safety

UN number:

Standard carrier options available

UN38.3 documentation pending

Return warning

Customer reviews

Verified purchase reviews will appear here.