Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

Philips HP4745 ECG Compatible Battery 3.6V 1800mAh

Up to 21% off
New arrival
From $30.99 USD $38.99
Shipping calculated at checkout.
Fits Philips HP4745 ECG portable cardiac monitors; replaces OEM part B10298, AS10298, OM10298.
3.6V, 1800mAh Ni-MH cell delivers the capacity Philips specified for continuous cordless monitoring sessions.
Connector seats into the battery compartment with a straight vertical orientation and positive contact alignment.
Bench testing confirmed the cell accepts charge without BMS fault codes and holds voltage under standard monitoring load.
After installation, let the device complete its full power-on self-test without interruption — medical devices verify battery chemistry at startup, and stopping this cycle triggers a false fault that requires a complete reboot to clear.
Delivery time

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

Discount: As a thank you for your patience, enjoy 5% off on your order
WECARE5

Please Confirm Delivery Timeline

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
4.8
★★★★★
★★★★★
Average Customer Rating
By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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

3.6V

Amp

1800mAh

Philips HP4745 ECG — 3.6V Ni-MH Replacement Battery (B10298)

This 3.6V, 1800mAh Ni-MH battery replaces part numbers B10298, AS10298, and OM10298 in the Philips HP4745 portable electrocardiograph. It fits the HP4745 ECG series used for cordless cardiac monitoring and cardiograph recording in clinical settings. Voltage and capacity match OEM specifications exactly.

  • HP4745 ECG series fit: The HP4745 platform runs a 3.6V single-cell Ni-MH architecture with a fixed connector and BMS handshake tied to cell chemistry. Any cell outside that voltage rail or chemistry flag causes the BMS to reject the pack outright, so matching both is non-negotiable on this device.
  • Bench tested on actual hardware: We cycled this cell through the HP4745 power-on sequence and confirmed the BMS handshake completes without fault codes. The charge IC accepted the cell on the first insertion. Load draw during a full ECG acquisition run stayed within the cell's continuous discharge rating throughout testing.
  • Post-installation self-test protocol: After fitting this battery, let the HP4745 complete its full power-on self-test cycle without interrupting it. Medical-grade BMS firmware runs a chemistry verification at startup. Cutting power mid-sequence logs a false battery fault that persists until the device completes a full reboot from rest.

Why the HP4745 alarms low battery immediately after a confirmed full charge

The HP4745 BMS sets its low-battery threshold against a learned capacity baseline calibrated to the OEM cell. A new replacement cell has not yet established that baseline. The BMS reads an unfamiliar charge curve on the first cycle and flags it as a fault rather than accepting the full-charge state. Run one complete charge-to-discharge cycle without interruption, and the BMS recalibrates its threshold to the new cell's actual profile.

HP4745 failing to power on after the battery sat in storage

Ni-MH cells self-discharge at roughly 20–30% per month in storage. If the cell voltage drops below the BMS recovery threshold — typically around 3.0V on a 3.6V pack — the firmware will not initiate a boot sequence. The device appears completely dead even though the hardware is fine. Connect the HP4745 to mains power and leave it on charge for a minimum of four hours before attempting to power on, allowing the charge IC to bring the cell back above the BMS wake-up threshold.

Compatible Models

HP4745 ECG Cardiac Monitoring Cardiograph M4745A M4750A M4755A M4760A M4765A EKG 4745 EKG 4750 EKG 4755 EKG 4760 EKG 4765A Cardiac Cardiograph EKG 4745 Cardiac Cardiograph EKG 4750 Cardiac Cardiograph EKG 4755 Cardiac Cardiograph EKG 4760 EKG

Replaces Part Numbers

B10298 AS10298 OM10298

Technical Specifications

Voltage3.6V
Amp Hours1800mAh
Capacity1800mAh
Rate6.48Wh
Net Weight82.8g /2.92 oz
Gross Weight132.8g /4.68 oz
Approximate Weight132.8g /4.68 oz
Dimension 147.00 x 16.30 x 14.30mm

Product Highlights

  • Brand: Philips
  • 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

The HP4745 is shutting off mid-recording even though the battery was fully charged before the session — what's causing this?

New Ni-MH cells deliver lower sustained current in the first 5–10 cycles because the electrode surface hasn't fully activated. The HP4745 draws a hard load spike at acquisition start, and the BMS trips the under-voltage cutoff when a new cell sags under that surge before it's been conditioned. This isn't a faulty cell — it resolves as the cell beds in. Run three to five full charge-discharge cycles outside clinical use before relying on the battery for uninterrupted patient recordings.

The charge indicator on the HP4745 never reaches 100% on the first charge with a new battery — is the charger faulty?

The HP4745 charge IC applies a conservative termination limit on unrecognised cells to avoid overcharging an unknown chemistry baseline. On the first charge, it cuts off early rather than risk overrun, so the indicator stops short of full. The charger is working correctly. Cycle the battery once — discharge fully during normal device use, then charge without interruption — and the charge IC will reach 100% from the second cycle onward.

The HP4745 ran a self-test after the battery swap and returned a battery fault, but the cell reads 3.6V on a multimeter — what does that mean?

A correct open-circuit voltage doesn't satisfy the BMS self-test on its own. The HP4745 firmware verifies internal resistance and charge-acceptance rate during the self-test routine, not just resting voltage. A fresh cell straight out of packaging hasn't completed a charge-discharge cycle, so its internal resistance reads higher than the BMS expects and the test fails. Charge the battery fully, allow the device to discharge through normal operation, then recharge fully — one complete cycle clears the fault on the next self-test.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

Philips HP4745 ECG Replacement Battery, 3.6V, 1800mAh, Ni-MH 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections