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HUACE M600 Survey Instrument Compatible Battery 7.4V 2000mAh

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Fits HUACE M600, R30, X20, X90 surveying instruments; replaces OEM battery CS-LI1SL.
7.4V 2000mAh lithium-ion cell delivers 14.8Wh to sustain positioning and measurement cycles without mid-session dropout.
Connector accepts standard slot orientation; locking tab seats flush against instrument battery compartment frame.
We bench-tested this pack under sustained sensor load—BMS held steady through full probe initialization without early cutoff.
After installing, run a full calibration cycle through the instrument menu before field deployment; the M600 maps battery state during calibration, and skipping this step causes premature low-battery warnings on the first measurement 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.

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

7.4V

Amp

2000mAh

HUACE M600 / R30 / X20 / X90 Series — 7.4V Li-ion Replacement Battery

This 7.4V 2000mAh Li-ion battery replaces the original pack in HUACE M600, R30, X20, and X90 surveying instruments. It fits positioning and measurement equipment used in field survey, testing, and site measurement applications. Capacity is rated at 14.8Wh, matching the standard draw profile of these instruments.

  • M600 / R30 / X20 / X90 platform: These models share a 7.4V two-cell Li-ion architecture with the same connector pinout and BMS communication protocol. Swapping between units in this family requires no adapter or firmware change.
  • Bench tested on actual hardware: We cycled this pack through instrument power-on, sensor initialisation, and sustained logging load. The BMS held voltage within spec during probe power-up current spikes and did not trip on cold-start draw.
  • Pre-deployment calibration cycle: After installing this pack, run a full calibration cycle through the instrument menu before heading into the field. The M600 and related units map battery state during calibration — skipping this step causes the low-battery warning to trigger early on the first measurement session, even with a full charge.

BMS cutoff when the M600 initialises its sensor or probe module

When the instrument powers its sensor module at startup, it pulls a brief current spike that can exceed the protection threshold on a degraded or cold pack. The BMS responds by cutting output, which looks like a random shutdown immediately after the splash screen. This battery's protection circuit is rated for the inrush profile these instruments generate. If cutoff still occurs at low ambient temperatures, warm the instrument to above 10°C before powering on — Li-ion internal resistance rises sharply in the cold and amplifies that spike.

Instrument won't recognise the pack after it sat unused for several months

A Li-ion pack left discharged in a carry case will self-discharge below the BMS recovery threshold — typically around 2.5V per cell. Below that level, the BMS enters sleep mode and the instrument sees no battery at all. Standard chargers will not wake a pack in this state. Connect the battery to a charger with a recovery or boost mode, which applies a low trickle current until cell voltage climbs above 2.8V per cell. Once voltage recovers to that point, normal charging resumes and the instrument will recognise the pack again.

Compatible Models

M600 R30 X20 X90 X300 XB-2

Technical Specifications

Voltage7.4V
Amp Hours2000mAh
Capacity2000mAh
Rate14.8Wh
Net Weight100g /3.53 oz
Gross Weight125g /4.41 oz
Approximate Weight125g /4.41 oz
Dimension 70.60 x 38.60 x 20.54mm

Product Highlights

  • Brand: HUACE
  • 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 HUACE M600 shuts off in the middle of a logging session even though the battery showed full at the start — what's happening?

Sustained sensor load pulls a steady current draw that causes voltage to sag gradually across the session. When cell voltage dips below the instrument's cutoff threshold, it shuts down to protect the cells — even if the displayed percentage still looked healthy. This happens faster with an aged original pack because capacity has faded, but it can also occur with a new pack if the instrument's battery state map hasn't been recalibrated. Install the new pack, run the calibration cycle through the instrument menu, and the instrument will re-map its voltage thresholds correctly against the new cells.

The M600 powers on fine but shuts off as soon as I start transferring data to a PC over USB — is that a battery fault?

USB data transfer adds a second load on top of the instrument's normal processor and display draw. Combined, these pulls can exceed what a partially discharged pack can sustain, and the BMS cuts output to protect the cells. This is not a fault with the battery — it's a load management issue. Charge the pack to full before any USB transfer session, and if the shutdown still occurs, disconnect non-essential peripherals before initiating the transfer.

After fitting the new battery, the HUACE instrument shows a wildly inaccurate charge percentage that jumps around at every reboot — how do I fix this?

The instrument's voltage-to-percentage table was calibrated to the discharge curve of the original worn pack. A new cell with higher resting voltage sits in a different position on that curve, so the indicator reads it incorrectly until it relearns. Run the pack down to the low-battery warning through normal use, charge it fully without interrupting the cycle, then run the calibration routine in the instrument menu. After one full discharge-charge cycle with calibration, the percentage display will stabilise.

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