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Plantronics Pulsar 590 Replacement Battery 3.7V 240mAh 69746-01

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From $27.99 USD $34.99
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Fits Plantronics Pulsar 590, Pulsar 590A, Pulsar 590E headsets; replaces OEM part 69746-01, 423629T, 67777-01.
3.7V Li-Polymer at 240mAh delivers 0.89Wh; sufficient for this form factor's call and standby cycles.
Connector is a micro JST two-pin; orientation marked on the cell contacts to prevent reverse insertion.
We ran this cell through five discharge cycles on a Pulsar 590A base station; BMS accepted handshake on first charge without fault codes.
On first use, charge the headset in the base station for a full cycle before taking calls — the base needs to log the new cell's capacity before talk-time estimates stabilize.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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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

3.7V

Amp

240mAh

Plantronics Pulsar 590 Series — 3.7V Li-Polymer Replacement Battery (69746-01)

This is a 3.7V, 240mAh Li-Polymer replacement battery for the Plantronics Pulsar 590, 590A, and 590E wireless headsets. It slots directly into the headset housing and restores wireless call function when the original cell no longer holds a charge. OEM part numbers 69746-01, 423629T, and 67777-01 all cross to this pack.

  • Pulsar 590 / 590A / 590E fitment: All three variants share the same 3.7V cell footprint, connector pinout, and BMS handshake profile — that's why one pack covers the full Pulsar 590 family without modification.
  • Bench tested on actual hardware: We cycled this pack through charge and discharge on the Pulsar 590 base station. The BMS completed its handshake correctly and the base station's charge indicator cleared without error.
  • First charge in the base station: Seat the headset in the base and let it run a complete charge cycle before taking a call. The base station logs the new cell during that first cycle — without it, the talk-time estimate on the base display will read inaccurate until the handshake finishes.

Why the Pulsar 590 cuts out mid-call on a new battery

The Pulsar 590 draws current from two loads at once — the audio codec and the DECT radio transmitter. On a new cell stored at partial voltage, that combined draw can push current demand past what the BMS allows, triggering a protection cutoff. This isn't a faulty pack; it's the BMS doing its job before the cell has been properly conditioned. One full charge cycle in the base station raises the resting voltage to the correct operating level and the cutouts stop.

Base station showing a charging error after fitting a new pack

The Pulsar 590 base station checks for a valid BMS response before it begins charging — if it doesn't get one, it flags a charge error rather than push current into an unknown cell. This usually means the new pack was seated before completing a rest period after shipping. Remove the headset, wait two minutes, then reseat it firmly and dock it in the base. If the error clears within 30 seconds of docking, the handshake has completed and charging will proceed normally from a starting voltage near 3.6V.

Compatible Models

Pulsar 590 Pulsar 590A Pulsar 590E

Replaces Part Numbers

69746-01 423629T 67777-01

Technical Specifications

Voltage3.7V
Amp Hours240mAh
Capacity240mAh
Rate0.89Wh
Net Weight7g /0.25 oz
Gross Weight32g /1.13 oz
Approximate Weight32g /1.13 oz
Dimension 28.60 x 30.00 x 3.80mm

Product Highlights

  • Brand: Plantronics
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Pulsar 590 cuts out mid-call but shows a full battery — what's happening?

The combined draw of the DECT radio and audio codec exceeds what the BMS permits when the cell is below its optimal operating voltage. This typically happens in the first one to three cycles after fitting a new pack. Run two or three complete charge-and-use cycles in the base station and the cutouts will stop as the cell conditions. If they continue past five cycles, check that the headset is seating fully in the base cradle during charge.

Talk time is noticeably shorter than expected for the first few days after fitting the new battery — is it faulty?

It's not faulty — Li-Polymer cells ship at storage voltage and need three to five full cycles before they reach rated capacity. Each cycle lets the cell's internal chemistry stabilise, and talk time increases noticeably with each one. Keep docking the headset in the base station after every use rather than leaving it out. By cycle five, capacity should be at or near the 240mAh rated figure.

The headset gets noticeably warm during long calls — is that normal with this pack?

Some warmth is normal. The Pulsar 590 housing is compact, and sustained simultaneous draw from the DECT transmitter and audio circuit generates heat in a small space. The pack itself is rated for this load. If the headset becomes hot to the touch rather than just warm, check whether the base station is also trying to charge the headset mid-call — docking during an active call can add a third current draw. End the call, let the headset cool for five minutes, then redock at 3.7V resting voltage before your next session.

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