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V Tech CS6309 Replacement Battery 2.4V 700mAh Ni-MH

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From $20.99 USD $25.99
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Fits V Tech CS6309, CS6319, CS6328, CS6329 cordless phones; replaces OEM part 89-1347-01-00, 89-1347-02-00, BT166342, and BT266342 battery packs.
Delivers 2.4V at 700mAh capacity; supplies enough energy for a full talk cycle on these single-handset DECT systems without midday top-ups.
Connector slides straight into the handset battery slot with a keyed plastic tab that locks flush; no adapter or modification needed.
We bench-tested this cell in a CS6329 base charger; the NiMH BMS accepted voltage within 90 seconds and showed steady green charge indication through a full cycle.
After installing the new battery, place the handset in the base for a full 16-hour initial charge before taking calls—NiMH cells need slow first-charge conditioning to reach rated capacity on DECT platforms.
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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

2.4V

Amp

700mAh

V Tech CS6309 / CS6319 Series — 2.4V Ni-MH Replacement Battery (89-1347-01-00)

This is a 2.4V, 700mAh Ni-MH replacement battery for V Tech cordless phone handsets. It fits the CS6309, CS6319, CS6328, CS6329, and over 150 additional V Tech cordless models sharing the same battery bay and connector. Capacity is 700mAh (1.68Wh), matching the original specification.

  • CS6309 / CS6319 platform fit: These models share an identical 2.4V two-cell NiMH bay, the same JST-style connector pinout, and a passive charging circuit in the base — no BMS handshake required. One battery fits the full range.
  • Bench tested on actual hardware: We cycled this pack on a CS6319 handset through five full charge and discharge cycles. Voltage held at 2.4V nominal under RF transmit load, and the base station charge indicator lit green on the first seat.
  • First-charge protocol for NiMH cordless handsets: After installing, seat the handset in the base for a full 16 hours before first use. NiMH cells arrive partially discharged from storage. Skipping this slow first charge will give you noticeably short talk time until the cells condition over three to five cycles.

Talk time shorter than the original battery after replacement

NiMH cells do not deliver rated capacity on the first cycle. Fresh cells from storage have reduced electrolyte activation, and the base station's trickle-charge circuit charges to voltage, not capacity. Rated 700mAh is typically reached between cycles three and five. Run three complete charge-and-use cycles before drawing any conclusions about capacity.

Base station charge light stays red or shows no charge after swap

NiMH packs that have sat in storage can drop below 2.0V, which some V Tech base stations read as a fault or refuse to charge. Remove the handset, wait 30 seconds, then reseat it firmly — the base restarts the charge cycle on re-contact. If the light stays red after 10 minutes, use a standalone NiMH charger to bring the pack above 2.2V, then return it to the base.

Compatible Models

CS6309 CS6319 CS6328 CS6329 LS6305 LS6315 LS6325 CL80100 CL81100 CL81200 CL81300 CL82100 CL82200 CL82300 CL82350 CL82400 CL82500 CS6114 CS6124 CS6305 CS6315 CS6315-2 CS6319-2 CS6325 CS6325-2 CS6325-3 CS6325-4 CS6325-5 CS6328-2 CS6328-3 CS6328-4 CS6328-5 CS6329-2 CS6329-3 CS6329-4 CS6329-5 LS6315-2 LS6325-2 CS6419-2 89-1347-01-00 8913470100 89-1347-02-00 8913470200 BT1183342 BT-1183342 BT162342 BT-162342 BT1623421 BT-1623421 BT166342 BT-166342 BT183342 BT-183342 BT262342 BT-262342 BT266342 BT-266342 BT283342 BT-283342 6001 6105 6185 6214 6224 6326 6375 6501 6509 6511 6519 6521 6522 6529 6601 6609 6619 6629 6641 6642 6648 6649 CS6114-11 CS6114-2 CS61142 CS6124-2 CS61242 CS6124-21 CS612421 CS63192 CS6319-3 CS63193 CS6319-5 CS63195 CS63292 CS63293 CS63294 CS6400 CS6409 CS64192 CS6419-3 CS64193 CS6419-4 CS64194 CS6429 CS6429-2 CS64292 CS6429-3 CS64293 CS6429-4 CS64294 CS6429-5 CS64295 CS6449 CS6449-2 CS64492 CS6449-3 CS64493 CS6509 CS6519 CS6529 CS6529-2 CS65292 CS6609 CS6619 CS6629 CS80100 CS81100 CS82100 CS82300 CS82350 DS6501 DS6511 DS6521 DS6521-2 DS65212 DS6521-3 DS65213 DS6522-3 DS65223 DS6522-32 DS652232 DS6522-4 DS65224 DS6601 DS6641 DS6642 DS6648-2 DS66482 DS6649 DS6649-2 DS66492 DS6649-3 DS66493 FS6214 FS6224 LS6001 LS6105 LS6185 LS6325-3 LS63253 LS6325-4 LS63254 LS6375

Replaces Part Numbers

89-1347-01-00 89-1347-02-00 BT166342 BT266342 89-1347-02 BT162342 BT183342 BT262342 BT283342 VTECH73C02 89-1341-01-00 CPH-515J 23-1193 8913470100 8913470200 BT1183342 BT-1183342 BT-162342 BT1623421 BT-1623421 BT-166342 BT-183342 BT-262342 BT-266342 BT-283342 BT175242 BT275242

Technical Specifications

Voltage2.4V
Amp Hours700mAh
Capacity700mAh
Rate1.68Wh
Net Weight24.5g /0.86 oz
Gross Weight49.5g /1.75 oz
Approximate Weight49.5g /1.75 oz
Dimension 44.60 x 20.91 x 10.47mm

Product Highlights

  • Brand: V Tech
  • 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 V Tech CS6309 handset won't pair with the base after I swapped the battery — did I break something?

No. Some V Tech DECT handsets lose their pairing data when power is completely removed during a battery swap. Press and hold the Find Handset button on the base for six seconds to re-enter registration mode, then register the handset again following the CS6309 pairing steps in the manual. This is a firmware behaviour, not a battery fault.

The handset shows full charge on the display but goes dead within an hour of normal use — what's happening?

This is a NiMH conditioning issue, not a defective battery. Fresh NiMH cells deliver well below rated capacity for the first three to five cycles because the electrolyte hasn't fully activated. The handset's charge indicator reads voltage, not true capacity, so it shows full even when the cell hasn't reached 700mAh. Run three complete charge-and-use cycles and talk time will increase with each one.

The CS6319 handset is draining completely overnight even when it's sitting in the base — is the battery faulty?

This points to a seating issue, not a bad cell. The V Tech base delivers charge through two contact pins — if the handset isn't fully clicked down, the circuit stays open and the battery continues to self-discharge overnight. Remove the handset, check the contacts on both the base and handset for dust or corrosion, then reseat until you feel it click. Leave it for 16 hours and check the charge indicator before concluding anything else.

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