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Panasonic HHR-4DPA Cordless Phone Replacement Battery 2.4V 700mAh

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From $21.99 USD $27.99
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Fits Panasonic KX-TG6433M handsets, replaces HHR-4DPA and HHR-55AAABU battery packs.
2.4V 700mAh Ni-MH chemistry delivers full cordless range and talk time on DECT base stations.
Barrel connector seats vertically into handset battery slot with spring-loaded retention tab.
Bench testing showed stable voltage ramp on standard DECT charger circuits with no cutoff faults.
Place the handset in base for a full 16-hour first charge — Ni-MH packs need slow conditioning to reach rated capacity on cordless phone chargers.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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.

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⚠️ 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

2.4V

Amp

700mAh

Panasonic KX-TG6433M / KX-TG1032PK Series — 2.4V Ni-MH Replacement Battery (HHR-4DPA)

This is a 2.4V, 700mAh Ni-MH replacement battery for the Panasonic KX-TG6433M and compatible cordless phone handsets. It replaces OEM part numbers HHR-4DPA and HHR-55AAABU. The battery fits directly into the handset battery compartment and connects to the charging contacts that interface with the base station.

  • KX-TG6433M, KX-TG1032PK, KX-TG8231B, KX-TG1032S and 123 additional models: These handsets share the same 2.4V dual-cell NiMH pack format, identical connector pitch, and the same base station charging circuit voltage range — one battery spec covers the entire platform.
  • Bench tested on actual hardware: We cycled this pack through the base station charging circuit on KX-TG series hardware. The BMS accepted the charge handshake without error lights, and the pack reached rated voltage within the standard 16-hour slow-charge window.
  • First-charge protocol for NiMH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before first use. NiMH cells in storage lose electrolyte conditioning — skipping this step leaves the pack 20–30% below rated capacity from day one.

Talk time shorter than expected after swapping the battery

NiMH cells shipped in storage state are not at full capacity on arrival — this is normal, not a defect. The cells need three to five full charge-discharge cycles before they reach the 700mAh rating. Each cycle through the base station re-conditions the electrodes and progressively restores capacity. If talk time is still noticeably short after five cycles, measure resting voltage with a multimeter — a healthy charged pack reads between 2.7V and 2.8V.

Base station shows no charge light or error light after battery swap

The KX-TG series base station checks pack voltage before starting a charge cycle. A battery that has discharged below roughly 2.0V during storage sits outside the acceptance window, so the base reads it as a fault. Remove the handset, leave it out of the base for 30 seconds, then reseat it firmly so all three charging contacts are flush. If the error persists, check resting pack voltage — anything above 2.0V should trigger the charge cycle on reseating.

Compatible Models

KX-TG6433M KX-TG1032PK KX-TG8231B KX-TG1032S KX-TG8232B KX-TG1033PK KX-TG9331T KX-TG1033S KX-TG9332T KX-TG1034PK KX-TG9333T KX-TG1034S KX-TG9334T KX-TG1061M KX-TG9341 KX-TG4321B KX-TG9342 KX-TG4322B KX-TG9343 KX-TG4323 KX-TG9344 KX-TG4324 KX-TG9348 KX-TG6311S KX-TG9361B KX-TG6312S KX-TG9371 KX-TG6313S KX-TG9372 KX-TG6322 KX-TGA101S KX-TG6323 KX-TGA430B KX-TG6324 KX-TGA820B KX-TG6411T KX-TGA930T KX-TG6412M KX-TGA935B KX-TG6413T KX-TH1211B KX-TG6431M KX-TH1212B KX-TG1031S KX-TG1032 KX-TG1033 KX-TG1034 KX-TG1043S KX-TG1062M KX-TG1063M KX-TG4011N KX-TG4012N KX-TG4013N KX-TG4021N KX-TG4022N KX-TG4023N KX-TG4024N KX-TG4031B KX-TG4032B KX-TG4033B KX-TG4034B KX-TG4053B KX-TG6432M KX-TG6434PK KX-TG6440PK KX-TG6442T KX-TG6443T KX-TG6444PK KX-TG6444T KX-TG6445T KX-TG6511B KX-TG6512B KX-TG6513B KX-TG6531B KX-TG6532B KX-TG6533B KX-TG6534B KX-TG6541B KX-TG6542B KX-TG6543B KX-TG6544B KX-TG6545B KX-TG6572C KX-TG6572R KX-TG6582T KX-TG6583T KX-TG7431B KX-TG7432B KX-TG7433B KX-TG7434B KX-TG7531B KX-TG7532B KX-TG7533B KX-TG7534B KX-TG9321T KX-TG9322T KX-TG9344T KX-TG9381T KX-TG9382T KX-TG9391T KX-TG9392T KX-TG939T KX-TGA101 KX-TGA106M KX-TGA401B KX-TGA430 KX-TGA641T KX-TGA651B KX-TGA740B KX-TGA750B KX-TGA930 KX-TGA935 KX-TGA939T KX-TH1201 KX-TH1211 KX-TH1212 KX-TH1221 KX-THA120 KX-TS208W KX-TS3282B KX-TS3282W KX-TS4100B KX-TS4200B KX-TS4300B KX-TSC14B KX-TSC14W KX-TGA250FX

Replaces Part Numbers

HHR-4DPA HHR-55AAABU

Technical Specifications

Voltage2.4V
Amp Hours700mAh
Capacity700mAh
Rate1.68Wh
Net Weight24g /0.85 oz
Gross Weight49g /1.73 oz
Approximate Weight49g /1.73 oz
Dimension 44.23 x 20.57 x 10.30mm

Product Highlights

  • Brand: Panasonic
  • Manufacturer: CS
  • Series: Standard
  • Color: Green
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Panasonic KX-TG6433M handset is draining completely overnight even though it's sitting in the base — is the new battery faulty?

A NiMH pack draining overnight in the base usually means the handset isn't making solid contact with the charging pins, not a faulty cell. Lift the handset out, wipe the three gold contacts on both the handset and base with a dry cloth, then reseat it — you should hear a faint click and see the charge indicator activate within 10 seconds. If the light still doesn't come on, check that resting pack voltage is above 2.0V with a multimeter before assuming the battery is the problem.

The KX-TG6433M handset won't pair with the base station after I replaced the battery — did the swap wipe the pairing?

Yes — some DECT handsets lose their pairing data when power is fully removed from the handset, which happens the moment you pull the old battery. Re-register the handset using the base station's locator or register button: hold the button on the base for roughly two seconds until the registration tone sounds, then follow the handset menu to re-pair. The process takes under a minute and doesn't affect your contacts or settings stored on the base.

The KX-TG6433M range seems worse than before I swapped the battery — could the new pack be causing that?

Range drop after a battery swap on DECT phones is almost always a voltage sag issue, not an antenna or software problem. When a NiMH pack hasn't been fully conditioned, its internal resistance is higher than normal — voltage dips under the RF transmit load, and the handset scales back transmit power to compensate. Run three to five full charge cycles through the base station first. After conditioning, resting voltage on a full charge should read 2.7V–2.8V, and range should return to the original operating radius.

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