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Tele-Phone TEL1215 Replacement Battery 3.6V 2000mAh Ni-MH

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From $30.99 USD $38.99
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Fits Tele-Phone TEL1215, TEL620, TEL813, and TEL90 cordless handsets as OEM replacement.
3.6V, 2000mAh Ni-MH delivers full handset runtime on standard charge cycles.
Connector slides into handset battery slot; no locking tab, straight insertion only.
Bench tested for voltage ramp and BMS acceptance on Tele-Phone base chargers; no fault codes.
After installing, place the handset in the base for a full 16-hour charge before first use — NiMH cordless phone batteries require a slow first charge to reach rated capacity.
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

3.6V

Amp

2000mAh

Tele-Phone TEL1215 / TEL620 / TEL813 / TEL90 — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 2000mAh Ni-MH rechargeable battery for Tele-Phone cordless handsets. It fits the TEL1215, TEL620, TEL813, and TEL90 models. Swap it in when the original pack no longer holds a usable charge.

  • TEL-series handset compatibility: These four models share the same voltage rail, physical cell configuration, and connector format. The base station charging circuit expects a 3.6V Ni-MH pack, and this battery matches that requirement without modification.
  • Bench tested on actual hardware: We cycled this pack through charge and discharge on a cordless phone test rig. The cell voltage held within spec across repeated cycles, and the handset registered a full charge state at the base after each run.
  • First-charge protocol for Ni-MH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells in cordless phones reach rated capacity through slow initial charging — a quick top-up will not condition the pack correctly and talk time will be noticeably short until 3–5 full cycles are completed.

Range dropping mid-call after a battery swap

DECT handsets regulate transmit power, but the RF output still depends on stable voltage from the battery. A new Ni-MH pack fresh from storage has not been fully conditioned and its internal resistance is higher than normal. Under RF load, that resistance causes a voltage sag that the handset reads as a weak or low battery, which pulls back transmit power. Run 3–5 full charge and discharge cycles and the internal resistance drops — range returns to normal.

Base station showing no charge light after fitting new battery

Ni-MH batteries lose charge during storage and can arrive below the minimum voltage the base station accepts before it begins charging. If the base shows no activity after placing the handset, the pack voltage may be too low to trigger the charging circuit. Remove the handset, wait 30 seconds, and re-seat it firmly — some bases require a clean reconnect to reinitiate detection. If the light still does not activate, check the handset contacts against the base pins and confirm contact is not interrupted by debris or misalignment.

Compatible Models

TEL1215 TEL620 TEL813 TEL90

Technical Specifications

Voltage3.6V
Amp Hours2000mAh
Capacity2000mAh
Rate7.2Wh
Net Weight70.4g /2.48 oz
Gross Weight120.4g /4.25 oz
Approximate Weight120.4g /4.25 oz
Dimension 53.60 x 42.45 x 15.32mm

Product Highlights

  • Brand: Tele-Phone
  • 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 talk time is still short after replacing the battery — is something wrong with the new pack?

This is normal for the first few cycles on a Ni-MH cordless phone battery. Ni-MH cells ship partially discharged and need 3–5 full charge and discharge cycles before they reach rated capacity. Talk time will increase progressively with each cycle. After the fifth full cycle, if talk time is still noticeably short, check that the handset is fully seated in the base and the charging contacts are clean.

My Tele-Phone handset lost its pairing with the base after I swapped the battery — how do I fix it?

Some DECT phones drop their base registration when power is fully removed from the handset, which happens during a battery swap. The fix is to re-register the handset manually. On most Tele-Phone models, press and hold the paging button on the base for 5–10 seconds until the base enters registration mode, then follow the handset pairing prompt. Refer to the model's setup guide for the exact key sequence if the handset does not prompt automatically.

The handset battery drains overnight even when it's sitting in the base — what's causing that?

This usually means the handset is not making solid contact with the base charging pins. If the handset is even slightly tilted or the cradle is worn, the charge circuit does not stay active and the handset runs on battery in standby. Check that the handset clicks fully into the base and that the metal contacts on both the handset and base are free of oxidation. Clean the contacts with a dry cloth, re-seat the handset, and confirm the charge indicator light stays on through the night.

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