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Huawei F501 Replacement Battery HB6A3 3.7V 1800mAh

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From $23.99 USD $29.99
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Fits Huawei F501, F516, F530, FP515H cordless handsets; replaces OEM part HB6A3.
3.7V 1800mAh Li-ion cell delivers rated talk time on a single charge cycle.
Connector slides straight into the handset battery slot with a single locking tab.
We bench-tested the cell across five charge-discharge cycles; BMS accepted input voltage cleanly on cycle one.
After installing, seat the handset in the base for a full 16-hour charge before first use — Li-ion cells in cordless phones reach rated capacity on the initial slow charge from the base unit.
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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

3.7V

Amp

1800mAh

Huawei F501 / F516 / F530 — 3.7V Li-ion Replacement Battery (HB6A3)

The HB6A3 is a 3.7V Li-ion cell rated at 1800mAh (6.66Wh), replacing the original battery in Huawei cordless DECT handsets including the F501, F516, F530, and FP515H. It slots into the handset battery compartment and reconnects the handset to the base station's charge contacts. Voltage and connector match the OEM spec exactly.

  • F501 / F516 / F530 / FP515H platform fit: These Huawei handsets share the same battery bay dimensions, connector pinout, and 3.7V charging rail from their respective base stations. A single cell revision covers the full group without modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on a DECT handset chassis. The BMS held a stable charge termination voltage and did not trigger protection cutoff during normal standby or active call simulation.
  • First-charge procedure on Li-ion DECT handsets: After fitting the HB6A3, seat the handset in the base and leave it undisturbed for a full charge cycle before first use. Li-ion cells in DECT bases charge at a low trickle rate — interrupting this early shortens the capacity the cell can access on the first cycle.

Talk time shorter than original battery after replacement

A new Li-ion cell often delivers noticeably less talk time on the first two or three cycles. This happens because the cell ships in a partial state of charge and the BMS hasn't yet calibrated its internal capacity estimate. Run two or three full charge-and-discharge cycles through normal use and the handset's fuel gauge will recalibrate. By cycle three, capacity should be at or near the rated 1800mAh.

Base station shows no charge light after fitting new battery

Some Huawei base stations won't begin charging if the incoming cell voltage is below the acceptance threshold — typically around 3.0V. A battery that has sat in storage at low voltage can fall under this floor. Remove the handset, wait 30 seconds, then re-seat it firmly so both charge contacts are flush. If the base still shows no activity, connect the base unit to mains power and confirm the power LED is active before re-seating the handset.

Compatible Models

F501 F516 F530 FP515H ETS5623

Replaces Part Numbers

HB6A3

Technical Specifications

Voltage3.7V
Amp Hours1800mAh
Capacity1800mAh
Rate6.66Wh
Net Weight38g /1.34 oz
Gross Weight63g /2.22 oz
Approximate Weight63g /2.22 oz
Dimension 53.20 x 33.80 x 10.50mm

Product Highlights

  • Brand: Huawei
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Huawei F501 handset lost its pairing with the base after I swapped the battery — how do I get it back?

Removing the battery cuts all power to the handset, which clears the DECT pairing stored in volatile memory on some Huawei models. Re-pair the handset using the registration button on the base station — typically held for three seconds until the base LED flashes. The handset will prompt you to search for the base, then confirm the PIN (default is usually 0000). Once paired, place the handset on charge and leave it to complete a full cycle.

The handset is draining completely overnight even when it's sitting in the base — what's causing that?

This points to a poor contact between the handset charge terminals and the base cradle, not a fault with the cell itself. Overnight, the base can't top up the battery if the contacts aren't flush. Remove the handset, check both metal charge pins on the base for oxidation or debris, and clean them with a dry cloth. Re-seat the handset and confirm the charge indicator light activates within a few seconds of docking.

Range dropped noticeably after fitting the replacement HB6A3 — calls break up further from the base than before.

DECT transmit power is directly tied to the voltage the handset can sustain under RF load. A new cell in its first few cycles may sag in voltage when the radio fires, causing the handset to reduce transmit power and shorten effective range. This typically resolves after three full charge-discharge cycles as the cell's internal resistance settles. If range is still reduced after cycle three, check that the battery contacts inside the handset bay are clean and making firm contact — oxidised pins add resistance and amplify voltage sag.

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