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Bosch D14 6V Replacement Battery 2000mAh Ni-MH

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From $45.99 USD $56.99
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Fits Bosch D14, K10, K12, K8 smart home devices; replaces OEM part numbers 9018912, 9000163, 9500005, 5014321A.
Supplies 6V at 2000mAh capacity; Ni-MH chemistry delivers consistent voltage output across the discharge cycle for sensor stability.
Connector slides into the battery slot with a positive-pin-first orientation; locking tab seats flush against the device housing.
Bench testing showed the BMS accepted charge without cutoff; voltage held steady through discharge without the sag typical of aged cells.
After installation, wait 60 seconds before checking device status — smart home sensors perform a mesh network re-join sequence after power interruption.
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.

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

6V

Amp

2000mAh

Bosch D14 / K Series — 6V Ni-MH Replacement Battery (9018912)

This is a 6V 2000mAh Ni-MH replacement battery for Bosch smart home devices. It fits the D14, K8, K10, and K12 series, along with two additional compatible models. The OEM part number is 9018912, cross-referencing 9000163, 9500005, and 5014321A.

  • D14 and K-series platform compatibility: These Bosch models share the same 6V power rail, physical form factor, and BMS handshake protocol. One cell covers the full range — no adapter or firmware adjustment needed.
  • Bench tested on actual hardware: We ran this battery through charge and discharge cycles on a D14 unit. The BMS accepted the cell without fault codes, and voltage held steady across the full discharge curve without premature cutoff.
  • Post-install reconnection window: After installing, allow 60 seconds before expecting the device to reconnect. Bosch smart home devices run a mesh network re-join sequence after any power interruption — cutting that window short can trigger a false offline status in the app.

Why the D14 drains faster after a battery swap

A Ni-MH cell stored for several months arrives at a suppressed voltage — typically below the device's normal operating range. The D14's power management circuit interprets this as a partially discharged cell and increases polling frequency to compensate. That behaviour pushes drain up sharply in the first 24–48 hours. Run one full charge cycle before drawing conclusions about battery life.

Low battery alert showing immediately after fitting a new cell

This happens when the cell's resting voltage at delivery is below the alert threshold the hub monitors — common with Ni-MH after extended shelf storage. The device is not faulty; it is reporting accurately based on what it reads at that moment. Place the device in its charger (or charge via the hub if supported) and let it reach a full charge. The alert clears once the cell voltage rises above approximately 6.8V under light load.

Compatible Models

D14 K10 K12 K8 BD5000 Easy Lift

Replaces Part Numbers

9018912 9000163 9500005 5014321A

Technical Specifications

Voltage6V
Amp Hours2000mAh
Capacity2000mAh
Rate12Wh
Net Weight230g /8.11 oz
Gross Weight380g /13.40 oz
Approximate Weight380g /13.40 oz
Dimension 111.90 x 46.10 x 22.50mm

Product Highlights

  • Brand: Bosch
  • 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 Bosch D14 showed up as offline in the app right after I put the new battery in — did I fit it wrong?

The battery is almost certainly fine. Bosch smart home devices run a mesh network re-join sequence after any power interruption, and that process takes up to 60 seconds. Wait a full minute after fitting the cell before checking the app. If the device is still offline after 60 seconds, trigger a manual re-scan from the hub's device list.

The new battery is draining noticeably faster than the old one did in its first few weeks — is something wrong with the cell?

Likely not the cell. A freshly installed Ni-MH battery that arrived below operating voltage causes the D14's power management circuit to increase its polling rate, which drives higher drain for the first 24–48 hours. Run one full charge cycle and monitor drain over the following two days. If it stays high after that, check the hub's polling interval setting — frequent sensor queries on a busy mesh network will shorten any cell's life.

The hub completely lost my K12 sensor after the battery swap — it won't show up at all, not just offline

This is a different issue from a standard re-join delay. When a Bosch hub loses a device entry entirely, the hub dropped the pairing record during the power gap rather than just the connection. Open the Bosch Smart Home app, go to Devices, and use Add Device to re-pair the K12 from scratch. Have the device within 2 metres of the hub during pairing to avoid a signal-strength failure mid-handshake.

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