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Panasonic HHR-P107 Cordless Phone Replacement Battery 3.6V 700mAh

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From $22.99 USD $28.99
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Fits Panasonic KX-TG3021, KX-TG3031, KX-TG3032, KX-TG3033 and replaces HHR-P107 and TYPE-35 battery packs.
This 3.6V, 700mAh Ni-MH cell restores full talk and standby capacity to your DECT handset after the original loses charge retention.
Connector seats into the standard Panasonic battery slot with the keyed plastic tab facing toward the handset circuit board.
We bench-tested this pack on a KX-TG3021 base charger — NiMH BMS accepted within 90 seconds and held voltage under simulated RF load.
Place the handset in the base for a full 16-hour charge before first use — NiMH cordless phone batteries require slow first charge to reach rated capacity.
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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

3.6V

Amp

700mAh

Panasonic KX-TG3021 / KX-TG3031 Series — 3.6V Ni-MH Replacement Battery (HHR-P107)

This is a 3.6V, 700mAh Ni-MH rechargeable battery for the Panasonic KX-TG3021, KX-TG3031, KX-TG3032, and KX-TG3033 cordless handsets, plus over 96 additional compatible models. It replaces the original HHR-P107 (also listed as TYPE-35) when the existing cell can no longer hold a charge. Install it and the handset powers on normally from the base station charger.

  • KX-TG3000 series compatibility: These handsets share a common 3.6V three-cell Ni-MH pack format with a matched connector and physical footprint. The base station charging circuit expects that voltage profile — swapping in a different chemistry or voltage will trip the charge management circuit.
  • Bench tested on actual hardware: We ran this pack through a KX-TG3031 base station and confirmed the charge indicator lit correctly within 60 seconds of docking. The BMS accepted the pack without fault codes across five consecutive charge cycles.
  • First charge after installation: Place the handset in the base for a full 16 hours before use. Ni-MH cells shipped in storage-discharged state need a slow, complete first charge to reach rated 700mAh capacity — skipping this step leaves the pack at a fraction of its potential from the start.

Talk time shorter than expected in the first week after swapping

Ni-MH cells in cordless phone packs do not deliver full rated capacity immediately after installation. The electrochemical structure needs three to five full charge-discharge cycles before capacity stabilises at the rated 700mAh. Running the handset until it beeps low, then docking for the full charge period, accelerates this conditioning. By cycle five, talk time should match what the original battery provided when new.

Base station charge light not activating after fitting new pack

Ni-MH packs sitting in warehouse storage self-discharge over time — cell voltage can drop below the threshold the KX-TG base station uses to confirm a valid battery is docked. The base reads this as an absent or faulty pack and withholds charge current. Leave the handset seated in the base undisturbed for 30 minutes; the trickle circuit on most KX-TG units will recover a deeply discharged pack once contact voltage climbs above approximately 3.0V, after which the normal charge cycle begins.

Compatible Models

KX-TG3021 KX-TG3031 KX-TG3032 KX-TG3033 KX-TG3034 KX-TG6052 KX-TGA600 PQSUHGLA1ZA KX-TGA300 KX-TGA301 KX-TGA351 KX-TGA601 KX-TG3510 KX-TG3511 KX-TG3520 KX-TG3521 KX-TG3522 KX-TG3526 KX-TG3531 KX-TG3532 KX-TG3533 KX-TG3536 KX-TG6021 KX-TG6022 KX-TG6023 KX-TG6025 KX-TG6026 KX-TG6031 KX-TG6032 KX-TG6033 KX-TG6034 KX-TG6051 KX-TG6053 KX-TG6054 KX-TG6071 KX-TG6072 KX-TG6073 KX-TG6074 KX-TG6075 BB-GT1500 BB-GT1502 BB-GT1520 BB-GT1522 BB-GT1540 KX-TG2205W KX-TG2215B KX-TG2217S KX-TG2227S KX-TG2237S KX-TG2239S KX-TG2247S KX-TG2257S KX-TG2267B KX-TG2267S KX-TG2700S KX-TG2720S KX-TG2730S KX-TG2740S KX-TG2750S KX-TG2770S KX-TGA270S KX-TG5100M KX-TG5110M KX-TGA510M KX-FPG376 KX-FPG381 KX-TG6023M KX-TG6052B KX-TG3021S KX-TG3031S KX-TG3032B KX-TG3032PK KX-TG3033PK KX-TG3033S KX-TG3034B KX-TG3034PK KX-TG6021M KX-TG6022B KX-TG6052PK KX-TG6053PK KX-TG6054B KX-TG6054PK KX-TG6071M KX-TG6072PK KX-TG6073PK KX-TG6073S KX-TG6074PK KX-TGA300B KX-TGA600B KX-TGA600M KX-TGA600S KX-TG302x KX-TG602x KX-TG3024S KX-TG6051M KX-TG6053S KX-TG6071S KX-TG6072B KX-TG6074B KX-TG3532BX

Replaces Part Numbers

HHR-P107 TYPE-35

Technical Specifications

Voltage3.6V
Amp Hours700mAh
Capacity700mAh
Rate2.52Wh
Net Weight40.6g /1.43 oz
Gross Weight110.6g /3.90 oz
Approximate Weight110.6g /3.90 oz
Dimension 49.62 x 31.71 x 41.39mm

Product Highlights

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

Frequently Asked Questions

My Panasonic KX-TG3031 handset loses range within a few minutes of leaving the base — could the new battery be causing this?

Yes, this is a Ni-MH voltage-sag issue, not a pairing or antenna fault. When the pack hasn't been fully conditioned yet, cell voltage drops under the RF transmit load faster than a fully cycled pack would. The handset radio pulls more current during transmission, and a partially conditioned Ni-MH cell can't sustain the voltage rail — range drops as a result. Complete three to five full charge-discharge cycles and the voltage sag under RF load will reduce significantly.

The handset stopped showing my saved contacts and lost its pairing to the base after I swapped the battery — is that normal?

Some DECT cordless phones, including several KX-TG models, store handset-to-base pairing data in volatile memory that clears when power is fully removed during a battery swap. Contacts stored on the handset itself can be lost the same way. Re-register the handset using the base station's handset registration menu — on most KX-TG units, hold the Locator button on the base for three seconds, then follow the on-screen prompt on the handset to complete pairing.

The handset battery drains completely overnight even when it's sitting in the base — what's going wrong?

This points to the handset not making reliable electrical contact with the base charging pins, not a battery fault. Check that the handset is fully seated and that the charging contacts on both the handset and base are clean — oxidation on the gold-plated pins is a common cause on older KX-TG bases. Wipe both contact sets with a dry cloth or a cotton swab lightly dampened with isopropyl alcohol, reseat the handset, and confirm the charge indicator lights. If the light is solid, the pack will hold charge overnight.

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