Avaya Tenovis Integral D3 Compatible Battery 2.4V 600mAh Ni-MH
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Avaya Tenovis Integral D3 Compatible Battery 2.4V 600mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Avaya Tenovis Integral D3 Compatible Battery 2.4V 600mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Voltage
2.4V
Amp
600mAh
Avaya Tenovis Integral D3 Mobile — 2.4V Ni-MH Replacement Battery (4.999.046.235)
This is a 2.4V, 600mAh Ni-MH rechargeable battery for the Avaya Tenovis Integral D3 Mobile cordless DECT handset. It also fits the C4065R and FC1 models sharing the same battery bay and connector. OEM part numbers covered include 4.999.046.235, 4999046235, NTTQ49MAE6, and 4.999.134.298.
- Tenovis Integral D3 Mobile, C4065R, and FC1 compatibility: These three handsets share the same 2.4V Ni-MH cell format, connector pinout, and BMS handshake with the base station charging circuit — one battery pack covers all three.
- Bench tested on actual hardware: We cycled this pack through charge and discharge on a Tenovis-compatible base. The BMS accepted the NiMH voltage profile without fault, and the charging circuit terminated correctly at full capacity.
- First charge after installation: After fitting this battery, seat the handset in the base for a full 16 hours before use. NiMH cells in cordless phones arrive partially discharged from storage — skipping the slow first charge leaves the pack well below its 600mAh rated capacity from the start.
Base station showing no charge or error light after fitting a new NiMH pack
When a NiMH battery sits in storage for several months, its resting voltage drops significantly — sometimes below the minimum acceptance threshold the Tenovis base expects before starting a charge cycle. The base reads this low voltage as a fault rather than an empty battery. To recover, remove the handset from the base for 30 seconds, then reseat it firmly. If the base still shows an error, leave the handset seated for 10–15 minutes — most Tenovis base stations switch to a trickle pre-charge mode and begin accepting the pack once it reads above approximately 2.0V.
Range drops noticeably when the new battery nears the bottom of its charge
DECT handsets draw higher current during RF transmission bursts, and a low NiMH pack sags in voltage under that load. The Tenovis D3 Mobile's transmit circuit needs a stable supply — when voltage sags, the radio reduces output power to protect the circuit, cutting usable range. This is more pronounced in the first three to five charge cycles before the NiMH cells reach full capacity. Charge the handset fully and complete several conditioning cycles before assessing actual range performance.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Avaya
- 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 Tenovis D3 Mobile talk time is much shorter than expected after fitting this battery — is something wrong?
This is normal for the first three to five cycles on a fresh NiMH pack. NiMH cells ship partially discharged and need several full charge-discharge cycles before reaching their rated 600mAh capacity. Run the handset until it signals low battery, then return it to the base for a full 16-hour charge — repeat this three to five times. Talk time increases noticeably after each conditioning cycle.
The handset lost its pairing to the base after I replaced the battery — how do I get it back?
Some DECT phones store pairing data in volatile memory that clears when power is fully removed, which happens during a battery swap. The fix is a manual re-registration: place the handset close to the base, hold the registration button on the base unit until the base enters pairing mode, then follow the on-screen or indicator-light prompt on the handset to re-pair. Consult the Tenovis Integral D3 Mobile user guide for the exact key sequence, as it varies by firmware revision.
The battery drains completely overnight even though the handset is sitting in the base — what causes this?
Overnight drain in the base usually means the handset is not making full contact with the charging pins. Check that the handset clicks firmly into the cradle and that the base charging pins are clean and unobstructed. A thin film of oxidation on the contacts can interrupt the charge circuit entirely — wipe both the handset contacts and the base pins with a dry cloth. Once the circuit is restored, the base indicator light should confirm active charging within a few minutes of reseating.
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