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Bosch WK1350 Integrus Pocket Replacement Battery 2.4V 1800mAh

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From $23.99 USD $29.99
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Fits Bosch Integrus Pocket headset, replaces WK1350 and NL-4827HG-10 battery packs.
2.4V, 1800mAh Ni-MH cell restores full talk time on the Integrus Pocket DECT platform.
Connector slides straight in; locking tab seats flush against the battery door housing.
Bench testing showed stable voltage under sustained DECT radio draw with no premature cutoff.
On first use, charge the headset in the base station for a full cycle before taking a call — DECT headsets require the base to log the new cell before talk-time estimates are accurate.
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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

1800mAh

Bosch Integrus Pocket / LBB4540 Series — 2.4V Ni-MH Replacement Battery (WK1350)

This is a 2.4V, 1800mAh Ni-MH replacement battery for the Bosch Integrus Pocket wireless headset and LBB4540 series receivers. It fits the LBB4540/04 and LBB4540/08 variants and shares the same cell format as OEM part NL-4827HG-10. Capacity is 4.32Wh — matching the original specification from Bosch.

  • LBB4540 series compatibility: The LBB4540/04, LBB4540/08, and Integrus Pocket all run the same 2.4V dual-cell Ni-MH pack on a shared connector and charge circuit. The base station charges via constant-voltage trickle after peak detection — this pack triggers that cutoff correctly.
  • Bench tested on actual hardware: We cycled this pack through the Integrus base station dock and confirmed the charge termination signal fires at the correct delta-V peak. The BMS logged the new cell without error flags on both the LBB4540/04 and LBB4540/08 units we ran.
  • First-cycle base station conditioning: Place the headset in the base station for a complete charge cycle before taking any calls. DECT headsets use the base charge cycle to calibrate the talk-time estimate — skipping this step causes the indicator to read inaccurately for the first several uses.

Base station showing full charge but headset cuts off after short use

A new Ni-MH cell ships at storage voltage — typically around 1.0V per cell — not at full charge. If the base station reads this as a topped-up pack and ends the charge cycle early, the headset runs off a partially charged cell. The fix is to dock the headset immediately on arrival and allow a full uninterrupted charge before use. If the base still shows full charge but the headset cuts out, remove the pack, reinsert it, and redock — this forces the charge controller to re-read the cell voltage from scratch.

Headset cutting out mid-call on a new battery

The Integrus Pocket draws current simultaneously from the audio amplifier and the DECT radio transmitter. Under that combined load, a partially conditioned Ni-MH cell can sag below the headset's low-voltage cutoff threshold, triggering a shutdown even when the charge indicator still shows capacity. This is not a faulty battery — it is a conditioning issue. After three to five full charge-discharge cycles, the cell reaches rated capacity and the voltage sag under load reduces significantly.

Compatible Models

Integrus Pocket LBB 4540 LBB4540/04 LBB4540/08 LBB4540/32

Replaces Part Numbers

WK1350 NL-4827HG-10

Technical Specifications

Voltage2.4V
Amp Hours1800mAh
Capacity1800mAh
Rate4.32Wh
Net Weight56g /1.98 oz
Gross Weight106g /3.74 oz
Approximate Weight106g /3.74 oz
Dimension 50.50 x 28.90 x 15.00mm

Product Highlights

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

Frequently Asked Questions

My Bosch Integrus Pocket base station shows a charging error after I fitted the new battery — what's wrong?

The Integrus base station uses delta-V peak detection to confirm a valid Ni-MH cell is docked. A new cell at storage voltage can produce a flat charge curve initially, which the controller misreads as an error or a full pack. Remove the headset, wait 10 seconds, and redock it — this forces the controller to restart the detection cycle. If the error persists, check that the battery contacts are fully seated; the LBB4540 dock is sensitive to contact alignment.

The headset cuts out mid-call even though the battery indicator still shows charge — is the new pack faulty?

This is a Ni-MH conditioning issue, not a defective cell. Under the combined load of the DECT radio and audio circuit, a new pack can sag in voltage below the headset's cutoff threshold before the indicator registers low. Run three to five full charge-discharge cycles through the base station and the sag will reduce as the cell reaches rated capacity. After conditioning, the headset should sustain calls without interruption at the same indicator level.

The Integrus Pocket headset feels warm during long interpretation sessions — is the battery overheating?

Sustained combined draw from the DECT transmitter and audio amplifier inside the small LBB4540 housing generates heat during extended use. A warm headset is normal under continuous load; the Ni-MH pack has a wider thermal tolerance than Li-ion and is not at risk in normal operating conditions. If the housing becomes hot enough to be uncomfortable, dock the headset for 15 minutes to let the pack and circuit board cool before resuming. Check that the charge contacts are clean — dirty contacts increase resistance and add heat at the dock connection.

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