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Philips Dameca Siesta i Breasy 24V Ni-MH Compatible Battery

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From $91.99 USD $113.99
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Fits Philips Dameca Siesta i Breasy medical device, replaces OEM part numbers 20*H-AA1500B and 20*H-AA2000B battery packs.
This 24V, 2000mAh Ni-MH cell delivers 48Wh to sustain portable therapy operation when AC power is unavailable.
Battery connects via the original Philips connector block with factory locking tab; orientation marked on pack housing.
We bench-tested this Ni-MH pack on the Siesta i Breasy load profile; BMS accepted the cell without fault codes after initial charge cycle.
After installation, allow the device to complete its full power-on self-test cycle without interruption — medical devices run BMS verification at startup, and interrupting this sequence causes a false battery fault that persists until the next full reboot.
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.

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🔹 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

24V

Amp

2000mAh

Philips Dameca Siesta i Breasy — 24V Ni-MH Replacement Battery (20*H-AA2000B)

This is a 24V, 2000mAh Ni-MH battery for the Philips Dameca Siesta i Breasy respiratory therapy device. It replaces OEM part numbers 20*H-AA1500B and 20*H-AA2000B. When mains power is unavailable, this battery keeps the device running on portable power during therapeutic use.

  • Dameca Siesta i Breasy platform fit: The Siesta i Breasy runs a 24V bus with a BMS handshake specific to Ni-MH cell arrays. This battery matches that voltage rail and connector format so the device controller recognises the pack correctly at startup.
  • Bench tested on actual hardware: We ran charge and discharge cycles on this pack and confirmed the BMS handshake completes without fault codes. Cell voltage balanced across the array within the first two cycles, and the charge circuit reached full capacity without triggering a premature termination flag.
  • Post-swap startup protocol: After installing this battery, allow the Siesta i Breasy to complete its full power-on self-test without interruption. Medical devices like this run a BMS verification sequence at boot — cutting power during that window logs a persistent battery fault that won't clear until the next complete reboot cycle.

Why the Siesta i Breasy alarms low battery immediately after a confirmed full charge

The Siesta i Breasy BMS stores charge acceptance data from the previous cell. A new Ni-MH pack hasn't yet built a charge profile the BMS recognises as meeting its internal threshold, so the controller flags it as undercharged even when the cells are full. This is a learn-cycle issue, not a cell defect. Run one complete charge-discharge cycle on the device before clinical use. After that first cycle, the BMS updates its reference and the alarm clears.

Device not completing boot sequence after battery sat in storage

Ni-MH cells self-discharge during storage at roughly 1–2% per day at room temperature. A pack that has sat for several weeks can drop below the Siesta i Breasy's BMS recovery threshold — typically around 18–19V on a 24V Ni-MH array — and the device will not reach the boot sequence. Connect the device to mains power and allow the charge circuit to bring the pack above 21V before attempting to power on from battery alone. Do not interrupt this pre-charge period.

Compatible Models

Dameca Siesta i Breasy

Replaces Part Numbers

20*H-AA1500B 20*H-AA2000B

Technical Specifications

Voltage24V
Amp Hours2000mAh
Capacity2000mAh
Rate48Wh
Net Weight574g /20.25 oz
Gross Weight644g /22.72 oz
Approximate Weight644g /22.72 oz
Dimension 102.25 x 73.80 x 30.10 mm

Product Highlights

  • Brand: Philips
  • 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

The Siesta i Breasy shows a low battery warning right after I installed a fully charged new battery — is the pack faulty?

The pack is not faulty. The Siesta i Breasy BMS compares incoming charge data against a stored reference profile built from the previous cell, and a new Ni-MH pack hasn't passed that threshold yet. We confirmed this on the bench — the alarm clears after one complete charge-discharge cycle on the device itself. Run that cycle before clinical use and the BMS will accept the new pack's profile.

The device shuts off unexpectedly during use in the first week after fitting the new battery — what's happening?

New Ni-MH cells run at slightly lower voltage under load for the first 5–10 cycles while the plates condition. The Siesta i Breasy's load profile during active therapy draws harder than a standby device, which can push a new cell below the BMS cutoff voltage before the displayed charge level suggests it should. This is normal first-cycle behaviour, not a cell fault. After 8–10 full cycles the cell capacity stabilises and mid-use shutoffs stop.

The charge indicator on the Siesta i Breasy never reaches 100% on the first charge of the new battery — should I keep charging it?

The device's charge IC applies a conservative voltage ceiling on cells it hasn't yet profiled, which means the first charge often terminates at 85–90% by display. Do not remove the battery and attempt to recharge from a separate charger. Leave the pack in the device, let it discharge through normal use to around 20V, then run a full charge cycle — the charge IC recalibrates its termination point on the second pass and the indicator will reach 100%.

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