Compatible with HP

HP Envy 13-AD142TU Replacement Battery - Replaces 921408-271

$36.15In stock

Why this battery

Fits HP Envy 13-AD142TU and replaces OEM part numbers 921408-271, AB06XL, HSTNN-DB8C, and TPN-I128.
7.7V and 6900mAh capacity delivers 53.13Wh — matching the ultrabook's original power budget for full-day portable work.
Connector is proprietary to HP's Envy 13-AD series; physical slot accepts this cell without modification or adapter.
We bench-tested against the Envy 13-AD142TU board; BMS negotiated correctly on first insertion with no charge-limiting errors.
After installation, run one full discharge to hibernation-cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.

7.7V6900mAhLi-Polymer

Fits 263 models · Replaces 8 part numbers

Ship from

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

$36.15Quantity 1

About this replacement

HP Envy 13-AD142TU Series — 7.7V Li-Polymer Replacement Battery (921408-271)

This 7.7V, 6900mAh (53.13Wh) lithium-polymer battery replaces OEM part 921408-271 in the HP Envy 13-AD142TU and over 260 compatible Envy 13-AD series ultrabooks. It matches the original connector, BMS handshake protocol, and voltage rail so the BIOS recognises it on first boot. Compatible OEM cross-references include AB06XL, HSTNN-DB8C, and TPN-I128.

Envy 13-AD series compatibility: The AD-series models — including the AD013NF, AD102NN, and AD181NO — share the same 7.7V power rail, physical form factor, and BMS communication protocol. One cell fits the full bracket of AD-series boards without modification.
Bench tested on actual hardware: We ran this cell through charge and discharge cycles on Envy 13-AD hardware. The BMS handshake completed correctly, charge termination triggered at the right voltage ceiling, and the BIOS battery register populated with valid data on first connection.
Post-swap learn cycle for the Envy 13-AD: After fitting this battery, 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 after every cell swap on Envy 13-AD boards.

BIOS reporting poor battery health immediately after fitting a new cell

The HP Envy 13-AD BIOS reads health data from the battery's EEPROM register, not from live voltage. When you swap cells, the EEPROM on the new battery carries factory baseline data that the BIOS hasn't yet calibrated against. It flags this as "poor health" or "battery not detected correctly" on first boot. Running a full discharge-to-hibernate followed by an uninterrupted charge to 100% forces the BIOS to re-index its fuel gauge IC against the new cell's actual capacity curve and clears the warning.

Laptop shuts down at 20–30% charge shown on screen

This is a voltage cliff problem, not a capacity problem. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC predicts — especially during the first few cycles on a new cell. When the voltage hits the BMS low-voltage cutoff threshold, the board shuts down even though the OS still shows charge remaining. Run two to three full discharge and recharge cycles without interrupting the charge above 80%. This recalibrates the fuel gauge IC and aligns the displayed percentage with the cell's actual voltage curve.

Compatibility

Check your original model and part number before ordering.

Compatible brands

Fit Model

Envy 13-AD142TUEnvy 13-AD013NFEnvy 13-AD181NOEnvy 13-AD102NNEnvy 13-AD024URENVY 13-AD026TUEnvy 13-AD102NBEnvy 13-ad101nsEnvy 13-AD055TUEnvy 13-AD002NCEnvy 13-AD075TUEnvy 13-AD104NWEnvy 13-AD005NXEnvy 13-AD007NSEnvy 13-AD113NFEnvy 13-AD123TUEnvy 13-AD011NAEnvy 13-AD135TUEnvy 13-AD012NOEnvy 13-AD160TUEnvy 13-AD016NFEnvy 13-AD103NWEnvy 13-AD034UR2EX78PAEnvy 13-AD052TUEnvy 13-AD001NEEnvy 13-AD066TUEnvy 13-AD003NFEnvy 13-AD098NIAEnvy 13-AD004TUEnvy 13-AD106NEEnvy 13-AD006NSEnvy 13-AD109TUEnvy 13-AD008NPEnvy 13-AD116UREnvy 13-ad010ngEnvy 13-AD144TUEnvy 13-AD013NOEnvy 13-AD192NDEnvy 13-AD102NFEnvy 13-ad030ngENVY 13-AD028TUEnvy 13-AD044NZEnvy 13-ad112ndEnvy 13-AD057NREnvy 13-AD002NFEnvy 13-AD078TUEnvy 13-ad004ngEnvy 13-AD104TUEnvy 13-AD005UREnvy 13-AD107TUEnvy 13-AD007NVEnvy 13-AD113TUEnvy 13-AD009NVEnvy 13-AD131NDEnvy 13-AD011NNEnvy 13-AD138TUEnvy 13-AD012TUEnvy 13-AD154NZEnvy 13-AD102NCEnvy 13-AD023NFEnvy 13-ad065nrEnvy 13-AD036UR2EX87PAEnvy 13-AD053TXEnvy 13-AD001NKEnvy 13-AD068TUEnvy 13-AD003NIEnvy 13-AD099NIAEnvy 13-AD004UREnvy 13-AD106NIAEnvy 13-AD006UREnvy 13-AD110NFEnvy 13-AD008NWEnvy 13-AD119TUEnvy 13-AD010NREnvy 13-AD011UREnvy 13-AD149NZEnvy 13-AD013TUENVY 13-ad003laEnvy 13-AD019NFEnvy 13-AD031ND2EX85PAEnvy 13-AD046TUENVY 13-ad060naEnvy 13-AD058TUEnvy 13-AD002NKEnvy 13-AD080NGEnvy 13-AD004NNEnvy 13-AD105NNEnvy 13-AD108NSEnvy 13-AD007TXEnvy 13-AD114NDEnvy 13-AD100NEEnvy 13-AD127TUEnvy 13-ad140ngEnvy 13-AD101NPEnvy 13-AD174TUEnvy 13-AD102NXEnvy 13-AD023URENVY 13-AD019TUEnvy 13-AD037UREnvy 13-ad106nsEnvy 13-AD054TUEnvy 13-AD001NXEnvy 13-AD070TUEnvy 13-AD003NOEnvy 13-AD104NCEnvy 13-AD005NNEnvy 13-AD106NNEnvy 13-AD007NFEnvy 13-AD111TUEnvy 13-AD100NDEnvy 13-AD120TUEnvy 13-AD010NVEnvy 13-AD012NCEnvy 13-AD156TUEnvy 13-AD014NFEnvy 13-AD020TUEnvy 13-AD032TU2EX79PAEnvy 13-AD050NZEnvy 13-AD060TUEnvy 13-AD002NXEnvy 13-AD081NDEnvy 13-AD004NSEnvy 13-AD105NXEnvy 13-AD006NNEnvy 13-AD109NFEnvy 13-AD008NBEnvy 13-AD114TUEnvy 13-AD100NSEnvy 13-AD132NDEnvy 13-AD101NEEnvy 13-AD181NDEnvy 13-AD102NSEnvy 13-AD024NFENVY 13-AD022TUEnvy 13-AD040TUENVY 13-ad107nsEnvy 13-AD055NREnvy 13-AD002NAEnvy 13-AD074TUEnvy 13-AD003TUEnvy 13-AD104NNEnvy 13-AD005NSEnvy 13-AD106NWEnvy 13-AD007NOEnvy 13-AD112UREnvy 13-AD009NFEnvy 13-AD122TUEnvy 13-AD010UREnvy 13-AD133TUEnvy 13-AD012NFEnvy 13-AD159TUEnvy 13-AD016NCEnvy 13-AD021TUEnvy 13-AD033UR2EX80PAEnvy 13-AD051TUEnvy 13-AD000UREnvy 13-AD063TUEnvy 13-AD003NEEnvy 13-AD098NBEnvy 13-AD004NXEnvy 13-ad105ngEnvy 13-AD006NPEnvy 13-AD109NWEnvy 13-AD008NOEnvy 13-AD116TUEnvy 13-AD010NDEnvy 13-AD143TUEnvy 13-AD101NCEnvy 13-AD192MSEnvy 13-AD102NLEnvy 13-AD029TUENVY 13-AD027TUEnvy 13-AD042TUEnvy 13-ad110nsEnvy 13-AD056NREnvy 13-AD002NEEnvy 13-AD076TUEnvy 13-AD004NFEnvy 13-AD104NXEnvy 13-AD005TXEnvy 13-AD107NWEnvy 13-AD007NTEnvy 13-AD113NSEnvy 13-ad009nsEnvy 13-AD125TUEnvy 13-AD011NFEnvy 13-AD136TUEnvy 13-AD012NSEnvy 13-AD163TUEnvy 13-AD016TUEnvy 13-AD103NOEnvy 13 2017Envy 13-AD036TU2EX86PAEnvy 13-AD053TUEnvy 13-AD001NIAEnvy 13-AD067TUEnvy 13-ad003ngEnvy 13-AD098NPEnvy 13-AD004TXEnvy 13-AD106NFEnvy 13-AD006NWEnvy 13-AD110CAEnvy 13-AD008NSEnvy 13-AD117TUEnvy 13-AD010NOEnvy 13-AD145TUEnvy 13-AD013NSENVY 13-ad007laEnvy 13-AD019NCEnvy 13-AD030URENVY 13-AD025TUEnvy 13-AD046NZEnvy 13-ad038tuEnvy 13-AD057TUEnvy 13-ad002ngEnvy 13-AD079TUEnvy 13-AD004NJEnvy 13-AD105NLEnvy 13-AD006NFEnvy 13-AD108NIEnvy 13-AD007NXEnvy 13-AD113UREnvy 13-AD100NIEnvy 13-AD126TUEnvy 13-AD011NSEnvy 13-AD139TUEnvy 13-AD101NTEnvy 13-AD173TUEnvy 13-AD017NFEnvy 13-AD103NCEnvy 13-AD100NKEnvy 13-AD054NZEnvy 13-AD001NOEnvy 13-AD069TUEnvy 13-AD003NKEnvy 13-AD104NBEnvy 13-AD005NFEnvy 13-AD106NJEnvy 13-AD007NBEnvy 13-AD110UREnvy 13-AD100CAEnvy 13-AD120NREnvy 13-AD010NSEnvy 13-AD101NXEnvy 13-AD155TUEnvy 13-AD100NXENVY 13-AD007TUEnvy 13-AD020NFEnvy 13-AD031TU2EX88PAEnvy 13-AD047TUEnvy 13-AD059NAEnvy 13-AD002NWEnvy 13-ad080nzEnvy 13-AD004NOEnvy 13-AD105NSEnvy 13-AD006NL

Part Number

921408-271921408-2C1921438-855AB06053XLAB06XLHSTNN-DB8CTPN-I128TPNI128

Specifications

Battery typeLi-Polymer

Voltage7.7V

Capacity6900mAh

Wh53.13Wh

Dimensions282.50 x 109.60 x 7.16mm

Weight

Connector

ChemistryLi-Polymer

Shipping and safety

UN number:

Standard carrier options available

UN38.3 documentation pending

Return warning

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