Compaq Armada M700 134111B21 Compatible Battery 14.8V 4400mAh
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Compaq Armada M700 134111B21 Compatible Battery 14.8V 4400mAh - 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.
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Compaq Armada M700 134111B21 Compatible Battery 14.8V 4400mAh - is backordered and will ship as soon as it is back in stock.
Voltage
14.8V
Amp
4400mAh
Compaq Armada M700 Series — 14.8V Li-ion Replacement Battery (134111B21)
This is a 14.8V 4400mAh (65.12Wh) Li-ion battery for the Compaq Armada M700 notebook series. It fits the M700-139116-AA4, M700-139117-BR2, M700-139120-206, M700-140142-016, and over 240 additional Armada M700 variants. The OEM part numbers it replaces include 134111B21, 135213-001, 135214-001, 144558-B21, and 167935-001 among others.
- Armada M700 platform fit: All M700 variants share the same 14.8V four-cell Li-ion voltage rail, physical bay connector, and BMS handshake protocol — which is why a single cell replacement covers the full range. The connector pinout and charge communication lines are identical across the series.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on M700 hardware. The BMS negotiated correctly with the system controller, charge termination fired at the expected voltage ceiling, and protection circuitry responded normally to load transitions.
- Post-swap BIOS calibration: After fitting this battery, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on the Armada M700 platform.
Armada M700 shutting down at 20–30% remaining after battery swap
This is a voltage cliff problem, not a capacity problem. Under combined CPU and display load, the new cell's voltage drops faster than the old BIOS fuel gauge data predicts — the system reads an immediate low-voltage event and cuts power. The BIOS is still referencing discharge curves from the degraded original cell. Run two full calibration cycles — discharge to hibernate-cutoff, then full uninterrupted charge — and the fuel gauge IC will remap against the new cell's actual discharge curve.
BIOS reporting wrong Wh rating after installing replacement cell
The Wh figure shown in BIOS or system information is pulled from EEPROM data stored on the battery's controller board, not measured live from the cells. Some replacement cells carry EEPROM values set to the rated chemistry spec rather than the exact OEM figure, which causes the mismatch. This does not affect actual charge capacity or cell behaviour — it is a stored label, not a functional fault. If the figure matters for asset management, compare actual measured Wh output against the 65.12Wh rating rather than relying on the EEPROM-reported value.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Compaq
- 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 Armada M700 fuel gauge is jumping around wildly — showing 80% one minute then 45% the next. Is the new battery faulty?
The fuel gauge IC on the M700 needs several cycles to calibrate against a new cell's discharge curve. It was still using the mapped data from the old degraded battery. Run two complete discharge-to-hibernate-cutoff cycles followed by uninterrupted full charges. After the second cycle, the gauge IC will have enough real data to track the new cell accurately.
BIOS shows "poor battery health" immediately after fitting the replacement — the laptop hasn't even run on it yet.
This is an EEPROM data conflict. The BIOS compares incoming battery EEPROM values against the last stored learn-cycle record from the original cell, and flags a mismatch as poor health. It is not a fault with the replacement. Run one full discharge to hibernate-cutoff followed by a complete uninterrupted charge — this forces a new learn cycle and clears the warning.
The M700 won't charge the new battery above 80% — it just stops and sits there.
Check whether Battery Life Extender or a BIOS charge-limit setting is active in the Compaq power management utility. This firmware feature caps charge at 80% intentionally to reduce cell stress, and it carries over after a battery swap. Navigate to the power management settings in the OS or enter BIOS setup and disable the charge limit. The battery should then charge to the full 14.8V ceiling.
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