1. Introduction
This manual provides essential information for the Estry CS-TRM300SL replacement battery. It is designed for use with specific Trimble Total Station models, ensuring reliable power for your equipment. Please read this manual thoroughly before installation and use to ensure safe and optimal performance.
Compatible Models:
- TRIMBLE TS635 Total Station
- TRIMBLE TS662 Total Stations
- TRIMBLE TS862 Total Station
Compatible Battery Part Numbers:
- 890-0084
- 890-0084-XXQ
2. Safety Information
Observe the following safety precautions to prevent injury, damage to the battery, or damage to your equipment.
- Do not attempt to disassemble, open, or service the battery pack.
- Do not crush, puncture, short external contacts, or dispose of in fire or water.
- Do not store above 60°C (140°F).
- Replace the battery only with the battery pack designated for this product.
- Keep the battery out of reach of children.
- Dispose of used batteries according to local regulations.
- The battery features built-in protection against overcharge, over-discharge, over-voltage, and short circuits to enhance safety and battery life.
3. Setup and Installation
Follow these steps to install the replacement battery into your Trimble Total Station.
- Ensure your Trimble Total Station is powered off and disconnected from any power source.
- Locate the battery compartment on your device. Refer to your Trimble Total Station's original manual for specific instructions on accessing the battery compartment.
- Carefully remove the old battery from the compartment.
- Insert the new Estry CS-TRM300SL battery into the compartment, ensuring the contacts align correctly. Do not force the battery into place.
- Secure the battery compartment cover.

Image 1: Top-down view of the Estry CS-TRM300SL battery, showing the connector pins and product labels.
4. Operating Instructions
Initial Use: For optimal performance, fully charge the battery before its first use.
Charging:
- Use only the original charger or a compatible charger designed for your Trimble Total Station.
- Connect the charger to the device and a power source.
- Monitor the charging indicator on your device.
Usage:
- The battery is a Lithium-ion type, which does not suffer from memory effect. You can charge it at any time without fully discharging it first.
- Avoid completely draining the battery frequently, as this can reduce its overall lifespan.
- Operating time will vary based on device usage and environmental conditions.
5. Maintenance
Proper maintenance extends the life of your battery.
- Storage: If storing the battery for an extended period, store it in a cool, dry place at approximately 50% charge. Avoid storing fully charged or fully discharged.
- Cleaning: Wipe the battery and its contacts with a clean, dry cloth. Do not use liquid cleaners or solvents.
- Temperature: Avoid exposing the battery to extreme temperatures, both hot and cold, as this can degrade performance and lifespan.
6. Troubleshooting
If you encounter issues with your battery, consider the following common solutions:
- Battery not charging:
- Ensure the battery is correctly inserted into the device.
- Verify the charger is properly connected to both the device and a working power outlet.
- Check if the charger itself is functioning correctly (e.g., by testing with another battery if possible).
- Device not powering on:
- Confirm the battery is sufficiently charged.
- Re-insert the battery to ensure proper contact.
- Short battery life:
- Battery life naturally diminishes over time and with usage cycles.
- Extreme temperatures during operation can reduce battery performance.
- Ensure the device's power settings are optimized for battery conservation.
If problems persist, refer to the "Warranty and Support" section for further assistance.
7. Specifications

Image 2: Side view of the Estry CS-TRM300SL battery, displaying model number, part numbers, rating, and safety warnings.
| Feature | Detail |
|---|---|
| Model Number | CS-TRM300SL |
| Compatible Part Numbers | 890-0084, 890-0084-XXQ |
| Battery Type | Lithium-ion (Li-ion) |
| Capacity | 5200 mAh |
| Watt-Hours (Wh) | 19.24 Wh |
| Voltage | 3.7 VDC |
| Dimensions (L x W x H) | 67.90 x 39.50 x 25.90 mm (2.67 x 1.56 x 1.02 inches) |
| Weight | 150g / 5.29 oz |
| Certifications | ISO9001, RoHS, CE |
| Manufacturer | CS (ShenZhen HENZENS Technology Co., Limited) |
8. Warranty and Support
Warranty: This Estry battery comes with a 12-month warranty and a 14-day money-back guarantee from the date of purchase. This warranty covers manufacturing defects and ensures the battery meets its stated specifications.
Support: If you have any questions regarding the installation, operation, or compatibility of your Estry CS-TRM300SL battery, or if you require technical assistance, please contact customer support. Providing details or pictures of your battery and device can help expedite support.