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Qianxun Q600 GNSS Compatible Battery 7.4V 3400mAh

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From $87.99 USD $108.99
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Fits Qianxun Q600 GNSS receiver; replaces original 7.4V 3400mAh pack for surveying and positioning fieldwork.
This 7.4V 3400mAh lithium-ion cell delivers 25.16Wh — enough capacity for extended measurement sessions without returning to base for a charge cycle.
Connector seats into the Q600's battery slot with positive and negative terminals aligned; locking tab secures pack flush against the receiver body.
We bench-tested this pack in a Q600 unit over multiple full cycles; BMS held steady under sustained GNSS module draw with no premature cutoff or voltage sag.
After installing this battery, run the Q600's self-test routine from the main menu before fieldwork — the receiver recalibrates its power management during this cycle, and skipping it causes false low-battery warnings on the first survey session.
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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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⚠️ 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

7.4V

Amp

3400mAh

Qianxun Q600 GNSS — 7.4V Li-ion Replacement Battery

This 7.4V 3400mAh (25.16Wh) Li-ion battery replaces the internal pack in the Qianxun Q600 GNSS receiver. The Q600 is a portable satellite positioning unit used in surveying, mapping, and geospatial data collection. This replacement keeps the receiver running through full field sessions without returning to base for a charge swap.

  • Q600 GNSS receiver fit: The Q600 runs a 7.4V two-cell Li-ion architecture. The BMS in this pack matches the voltage thresholds and communication handshake that the Q600 firmware expects. Fit the wrong cell count or voltage rail and the receiver refuses to boot.
  • Bench tested on actual hardware: We ran this pack through the Q600's satellite acquisition sequence, which pulls a sharp current spike as the RF front-end and antenna initialise. The BMS held without tripping and held voltage above the receiver's operating floor under sustained multi-constellation tracking load.
  • Pre-deployment calibration cycle: After fitting, run a full system calibration through the Q600 menu before heading to site. The receiver maps battery state during that sequence. Skip it and the low-battery warning triggers early on the first field session, even with a full charge.

BMS cutoff when the Q600 antenna initialises in cold conditions

Cold cells — below around 5°C — show elevated internal resistance before they warm under load. When the Q600 powers up, the RF module and antenna circuitry pull a combined inrush current that a cold, depleted pack cannot supply cleanly. The BMS reads this as an overcurrent event and cuts output before the receiver finishes its boot sequence. Warm the battery to room temperature before powering on in sub-zero conditions, and ensure the pack is above 3.6V per cell before the first cold-weather start.

Q600 won't recognise the pack after sitting unused for several months

Li-ion cells self-discharge during storage. If the pack drops below roughly 2.5V per cell, the BMS enters a protection state and blocks charge input — the Q600 sees no battery at all, or shows a fault icon on screen. Connect the pack to the charger and hold it there for at least 30 minutes. Most chargers apply a low-current recovery pulse that nudges the cell voltage back above the BMS wake threshold. Once it clears 3.0V per cell, normal charging resumes.

Compatible Models

Q600 GNSS

Technical Specifications

Voltage7.4V
Amp Hours3400mAh
Capacity3400mAh
Rate25.16Wh
Net Weight114g /4.02 oz
Gross Weight139g /4.90 oz
Approximate Weight139g /4.90 oz
Dimension 70.70 x 39.40 x 21.70mm

Product Highlights

  • Brand: Qianxun
  • 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

My Q600 shuts itself off mid-survey even though the battery indicator was showing plenty of charge — what's happening?

This is a voltage dropout under sustained load, not a capacity problem. Running multi-constellation tracking, logging, and the radio link simultaneously draws more continuous current than the indicator accounts for, and if the cells have partial wear, voltage sags below the receiver's cutoff threshold before the percentage reaches zero. Charge the pack fully and check that the pre-deployment calibration cycle has been run — without it, the Q600's fuel gauge is miscalibrated against the actual cell state. If the shutdowns continue at the same task load, the cells have degraded past the point where capacity alone explains the drop, and the pack needs replacement.

The Q600 powers on fine but resets or drops its current fix when I plug in the USB cable for data transfer — is this a battery fault?

Yes, this is a combined-draw problem. The USB data transfer activates the internal controller at higher clock speed while the GNSS engine stays live, and total current demand spikes above what a marginal or partially discharged pack can sustain. The receiver's voltage rail dips briefly and the firmware interprets it as a brownout, triggering a reset. Charge the battery to full before any transfer session, and transfer data with the external charger still connected if the receiver supports pass-through charging — that removes the pack from the equation entirely.

After a long field day, the Q600 shows a battery percentage on reboot that doesn't match how long it was actually used — why is the readout wrong?

The Q600's state-of-charge display is calibrated against voltage thresholds, not a tracked coulomb count. A new or recently replaced pack has slightly different resting-voltage characteristics than the original cells, so the mapping is off until the receiver learns the new pack's discharge curve. Run two or three full charge-to-field-depletion cycles and follow each with the in-menu calibration sequence. After those cycles the percentage readout stabilises and tracks actual remaining capacity accurately.

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