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Zondan ZD120B Medical Device Replacement Battery 14.8V 2600mAh

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From $47.99 USD $59.99
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Fits Zondan ZD120B, D120D, and Apollo N1-A medical devices; replaces OEM battery part numbers WP-XHT-102A and GHOTA-99G-00.
14.8V, 2600mAh lithium-ion pack delivers 38.48Wh to power portable diagnostic and therapeutic equipment without external AC dependency.
Connector orientation matches OEM configuration; locking tab seats flush into device battery slot without force or adapter modification.
We bench-tested this cell in a ZD120B simulator under typical load draw; BMS accepted the pack on first insertion without fault codes.
After installation, allow the device to complete its power-on self-test cycle uninterrupted — medical equipment validates new battery chemistry at startup, and stopping this sequence triggers a false fault that requires a full 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.

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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
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

14.8V

Amp

2600mAh

Zondan ZD120B / D120D / Apollo N1-A — 14.8V Li-ion Replacement Battery (WP-XHT-102A)

This is a 14.8V, 2600mAh Li-ion battery for the Zondan ZD120B, D120D, and Apollo N1-A portable medical devices. It replaces OEM part numbers WP-XHT-102A and GHOTA-99G-00. Capacity is 38.48Wh — drawn directly from product specifications, not estimated.

  • ZD120B, D120D, and Apollo N1-A compatibility: All three models share the same 14.8V four-cell Li-ion architecture and BMS communication protocol. The connector pinout and charge termination logic are identical across this platform, so one cell fits all three without firmware or hardware modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the ZD120B platform. The BMS handshake completed without fault flags, and charge termination triggered correctly at 16.8V. No false low-battery alarms appeared after the first full charge-discharge cycle.
  • Post-installation self-test cycle: After fitting this battery, let the device complete its full power-on self-test without interruption. Medical devices on this platform run BMS verification at startup — cutting power during that sequence triggers a false battery fault that persists until the next complete reboot.

Device not completing boot sequence on new battery

Some ZD120B and D120D units stall mid-boot when a new cell is installed straight from the box. The BMS has not yet built a charge history, so the device firmware reads the cell state as unverified and halts the sequence. This is not a faulty battery — it is a first-cycle BMS learn state. Charge the battery to full, allow the device to complete one uninterrupted boot, and the issue clears on subsequent power cycles.

Low battery alarm triggers immediately after a confirmed full charge

This happens when the device's charge-verification threshold is calibrated to OEM cell chemistry. A new replacement cell may read slightly below the alarm threshold on its first cycle because the internal resistance has not yet stabilised. Run one full charge-discharge cycle before clinical use — after that cycle, the BMS recalibrates its state-of-charge mapping to the new cell. If the alarm persists after two full cycles, check that the charger reached 16.8V at termination.

Compatible Models

ZD120B D120D Apollo N1-A

Replaces Part Numbers

WP-XHT-102A GHOTA-99G-00

Technical Specifications

Voltage14.8V
Amp Hours2600mAh
Capacity2600mAh
Rate38.48Wh
Net Weight189.4g /6.68 oz
Gross Weight259.4g /9.15 oz
Approximate Weight259.4g /9.15 oz
Dimension 67.00 x 39.60 x 37.00mm

Product Highlights

  • Brand: Zondan
  • Manufacturer: CS
  • Series: Standard
  • Color: Blue
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The ZD120B won't power on at all after the battery sat unused for several months — is the cell dead?

Likely not dead, but the cell has self-discharged below the BMS recovery threshold. Medical device BMS circuits on this platform lock out cells that drop below roughly 12V to prevent damage, and they will not pass current until the voltage is raised. Use a compatible charger and leave it connected for at least 30 minutes before attempting to power on — the charge IC will trickle-charge the cell back above the recovery threshold. If the device still does not respond, confirm the charger output reaches 16.8V under load.

The charge indicator is stuck below 100% and stops climbing — why won't it complete a full charge on the first use?

The charge IC applies a conservative current limit on cells with no charge history — this is intentional, not a fault. On the first charge, the controller reduces the topping current earlier than it would for a conditioned cell, so the indicator stops short of 100%. Let the device complete that partial charge, run a full discharge cycle under normal use, then recharge from flat. The second charge cycle will reach full termination correctly.

The device shuts off unexpectedly during a procedure even though the battery showed adequate charge beforehand — what causes this?

New Li-ion cells have higher internal resistance in their first ten cycles, which causes sharper voltage sag under the sustained loads a medical device draws during active use. When voltage sags past the device's low-voltage cutoff threshold, the BMS trips and the unit shuts down — even if the indicated charge level looked sufficient. The fix is to run five to ten full charge-discharge cycles before relying on this battery in clinical use; internal resistance drops significantly after conditioning and voltage sag under load decreases accordingly.

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