The Topcon DB-74 Rechargeable Li-Ion Battery is the standard power source for a broad range of Topcon survey instruments, from robotic total stations to digital levels. Designed to OEM specifications, the DB-74 delivers consistent voltage output and reliable run times so your crew stays productive through a full shift—without mid-day charging delays or unexpected shutdowns. If your operation runs multiple Topcon instruments, standardizing on the DB-74 platform means one charger, one spare management system, and no guesswork on the job site.
Overview & Jobsite Applications
The DB-74 is one of the most widely deployed battery platforms in Topcon's professional instrument lineup. Whether you're running boundary surveys, construction layout, or grade control operations, the DB-74 keeps your total station or digital level powered through demanding field conditions. Its lithium-ion chemistry maintains stable output even as the charge depletes, reducing the risk of erratic instrument behavior late in the day. Crews working long shifts or remote sites will benefit most from keeping at least one fully charged spare DB-74 on hand.
Key Specifications
- Chemistry: Lithium-Ion (Li-Ion)
- Nominal Voltage: 7.2V
- Capacity: Approx. 3,000 mAh
- Form Factor: OEM-matched snap-in pack
- Compatibility: Topcon ES, DS, GPT, DL, and select IS series instruments
- Charge Interface: Compatible with Topcon BC-27BR charger
- Operating Temperature: -10°C to 40°C (14°F to 104°F)
- Weight: Approx. 140g
Key Features
- OEM-specification lithium-ion cells for consistent performance and instrument compatibility
- Stable voltage output throughout the discharge cycle—no mid-shift instrument errors
- Lightweight form factor minimizes added weight to handheld and tripod-mounted instruments
- Snap-in battery interface for fast swaps in the field without tools
- Designed for repeated charge cycles with minimal capacity degradation over time
- Backed by Express Tools' contractor pricing and fast fulfillment
Job Applications
Construction Layout: Power your Topcon ES or DS total station through full-day layout sessions on commercial and residential job sites. Keep a charged DB-74 spare in your instrument case so a battery swap never delays your crew.
Boundary & Topographic Surveys: Survey crews working remote parcels rely on consistent battery performance far from power sources. The DB-74's Li-ion chemistry holds its charge during transit and delivers reliable run time once you're on station.
Digital Level Runs: Topcon DL-series digital levels draw steady power for electronic readouts and data logging. The DB-74 supports extended level runs without the voltage sag that can affect older NiMH packs.
Robotic Total Station Operations: Running a robotic setup means your instrument is active for long unattended periods. Carrying multiple DB-74 packs ensures your robotic session doesn't stop short on a big production day.
Compatible Accessories
- Topcon BC-27BR Single-Port Battery Charger
- Topcon BC-27B Dual-Port Battery Charger
- Topcon ES-105 Total Station
- Topcon DS-203 Robotic Total Station
- Topcon DL-503 Digital Level
- Topcon Instrument Carrying Cases
Related Guides
- How to Maximize Li-Ion Battery Life in Survey Instruments
- Topcon Total Station Buyer's Guide for Contractors
- Field Battery Management: Best Practices for Survey Crews
- Topcon DB-74 vs. DB-72 — Which Battery Do You Need?
Frequently Asked Questions
- What Topcon instruments is the DB-74 battery compatible with?
- The DB-74 is compatible with Topcon ES, DS, and GPT series total stations, DL series digital levels, and select IS series imaging total stations. Always verify your instrument's battery specification in the owner's manual before ordering.
- How long does the DB-74 battery last on a single charge?
- Run time varies by instrument model and usage intensity, but most Topcon total stations will operate for approximately 8–10 hours of normal field use on a fully charged DB-74. Continuous motor drive or Bluetooth usage will reduce run time.
- Is the DB-74 the same as the DB-72?
- No. The DB-72 and DB-74 are different battery models with different form factors and voltage specs. They are not interchangeable. Check your instrument's documentation or contact Express Tools to confirm the correct battery for your model.
- What charger do I need for the Topcon DB-74?
- The DB-74 is designed to charge with the Topcon BC-27BR or BC-27B charger. These chargers are also available through Express Tools and support multiple DB-series batteries for efficient fleet charging.
Frequently Asked Questions
What Topcon instruments is the DB-74 battery compatible with?
The DB-74 is compatible with Topcon ES, DS, and GPT series total stations, DL series digital levels, and select IS series imaging total stations. Always verify your instrument's battery specification in the owner's manual before ordering.
How long does the DB-74 battery last on a single charge?
Run time varies by instrument model and usage intensity, but most Topcon total stations will operate for approximately 8–10 hours of normal field use on a fully charged DB-74. Continuous motor drive or Bluetooth usage will reduce run time.
Is the DB-74 the same as the DB-72?
No. The DB-72 and DB-74 are different battery models with different form factors and voltage specs. They are not interchangeable. Check your instrument's documentation or contact Express Tools to confirm the correct battery for your model.
What charger do I need for the Topcon DB-74?
The DB-74 is designed to charge with the Topcon BC-27BR or BC-27B charger. These chargers are also available through Express Tools and support multiple DB-series batteries for efficient fleet charging.