Philips ME202C PageWriter TC20 Replacement Battery 10.8V 7800mAh
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Philips ME202C PageWriter TC20 Replacement Battery 10.8V 7800mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Philips ME202C PageWriter TC20 Replacement Battery 10.8V 7800mAh - is backordered and will ship as soon as it is back in stock.
Voltage
10.8V
Amp
7800mAh
Philips PageWriter TC20 / TC30 — 10.8V Li-ion Replacement Battery (ME202C)
This is a 10.8V, 7800mAh Li-ion battery that replaces the ME202C in the Philips PageWriter TC20 and TC30 series cardiographs. These are portable 12-channel ECG devices used in clinical, ward, and mobile medical unit settings. Voltage and capacity match OEM spec to keep the device's BMS from flagging a fault on first boot.
- TC20 and TC30 platform compatibility: Both the PageWriter TC20 and TC30 Cardiograph share the ME202C battery format, the same 10.8V nominal rail, and the same BMS communication protocol. Swapping between units in a facility using a mixed fleet is straightforward — the cell and connector are identical across the series.
- Bench tested on actual hardware: We cycled this cell through the PageWriter's full charge and discharge sequence. The BMS accepted the cell without fault, charge IC reached full termination voltage, and the device completed its power-on self-test without triggering a battery alarm.
- Post-installation self-test protocol: After fitting this battery, let the PageWriter complete its full power-on self-test without interrupting it. Medical-grade BMS firmware runs a verification sweep at startup. Cutting power during that sequence causes a persistent battery fault flag that won't clear until the next uninterrupted cold boot.
Why the PageWriter TC20 alarms low battery immediately after a confirmed full charge
The TC20's BMS sets its low-battery alarm threshold against a learned capacity profile from the previous cell. A new ME202C hasn't completed a full charge-discharge learn cycle, so the BMS is comparing real-time voltage curves against a profile it built from an aged cell. On the first cycle, the new cell's voltage curve looks unfamiliar, and the firmware trips the alarm early. Run one full charge-to-discharge-to-charge cycle before relying on the battery indicator in a clinical setting. After that first cycle, the BMS recalibrates its profile to match the new cell and alarm thresholds normalise.
PageWriter TC30 won't power on after the replacement battery sat in storage
Li-ion cells self-discharge during storage, and if the ME202C drops below approximately 2.5V per cell (around 7.5V pack voltage), the BMS latches into deep-discharge protection and blocks output entirely. The device shows nothing — no boot screen, no charge indicator. To recover, connect the OEM Philips charger and leave it for at least 30 to 60 minutes without pressing the power button. The charge IC applies a low-rate pre-charge current to bring the pack above the BMS recovery threshold, typically around 9V, before it unlocks normal charging. Once the indicator shows active charging, the battery is out of protection mode.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Philips
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
The PageWriter TC20 shows a battery fault on screen right after I installed this replacement — is the battery defective?
This is almost always a BMS learn-cycle issue, not a defective cell. The TC20's battery management firmware built its fault thresholds around the outgoing cell's aged capacity profile, and the new ME202C hasn't run a full cycle yet for the BMS to recalibrate. Power the device off completely, let it sit for 60 seconds, then cold-boot it and allow the self-test to complete without interruption. If the fault clears after one full charge-discharge cycle, the BMS has recalibrated — the cell is fine.
The charge indicator on the PageWriter TC30 stops at around 80–90% and never reaches full — is the charger the problem?
The charger is applying a conservative current limit on the first charge of a new cell, which is normal behaviour for medical-grade charge ICs. The TC30's charge controller reduces current when it detects a cell it hasn't profiled before, and terminates early if voltage rise looks faster than expected from a new cell. Leave the device on charge for a full uninterrupted session — do not disconnect and reconnect mid-cycle. By the second or third full charge, the IC adjusts its termination point and the indicator will reach 100%.
The PageWriter TC20 shuts off mid-recording without any low battery warning — what's causing this?
During the first 10 cycles on a new cell, the TC20's load profile during active ECG acquisition draws harder than standby, and the BMS can trip its undervoltage cutoff if the cell's internal resistance hasn't settled yet. New Li-ion cells have slightly higher internal resistance out of the box, which causes a brief voltage sag under the acquisition load that crosses the BMS cutoff threshold even when the state of charge reads adequate. Run the battery through three to five full cycles before using it in continuous recording sessions. After that, internal resistance stabilises and the voltage sag under load stays above the 9V BMS cutoff floor.
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