Topcon RL-H5A-Recharge-Kit : Includes Rechargeable Battery BT-79Q / 1025029-01 and Charger AD-17B /

The Topcon RL-H5A-Recharge-Kit pairs the BT-79Q rechargeable battery (part no. 1025029-01) with the AD-17B charger (part no. 1024944-02), delivering a complete, factory-matched power solution for your Topcon RL-H5A rotating laser level. If you're still burning through packs of disposable alkaline batteries on every job, this kit pays for itself fast — cutting recurring supply costs, reducing waste on the jobsite, and keeping your laser running through full shifts without hunting for fresh batteries mid-task.

Kit Overview and Jobsite Applications

The RL-H5A is one of the most trusted self-leveling rotary lasers in the field, used daily for grading, concrete flatwork, foundation layout, drainage, and interior leveling work. The weak link on long jobs is battery life — and disposable AA cells are an ongoing expense that adds up over a season. The BT-79Q is purpose-built for the RL-H5A, providing reliable, high-capacity rechargeable power with a consistent discharge curve so your laser maintains stable operation from first use to the end of the charge. The AD-17B charger is compact, fast, and designed to handle the BT-79Q correctly, protecting battery longevity over hundreds of charge cycles.

Key Specifications

• Battery Model: BT-79Q (Part No. 1025029-01)
• Charger Model: AD-17B (Part No. 1024944-02)
• Compatible Instrument: Topcon RL-H5A Rotating Laser Level
• Battery Type: Rechargeable NiMH
• Charger Input: AC adapter style, compatible with standard outlet
• Kit Contents: 1x BT-79Q battery, 1x AD-17B charger
• OEM Fit: Factory-matched Topcon components

What's in the Kit

• BT-79Q Rechargeable Battery — Factory Topcon battery pack engineered specifically for the RL-H5A; drops in exactly like the OEM battery tray with no adapters required
• AD-17B Battery Charger — Compact AC charger matched to the BT-79Q chemistry for safe, efficient charging and maximum cycle life
• Complete Power Solution — Everything you need to go rechargeable in one bundle — no sourcing parts separately

Job Applications

Site Grading and Earthwork: Operators running the RL-H5A through full grading days need power that lasts. The BT-79Q keeps your laser live through the shift without mid-day battery swaps slowing the crew down.

Concrete Flatwork and Slab Pours: Slabs don't wait for battery changes. Keep a charged BT-79Q ready to go and keep your pour moving on schedule.

Foundation and Footing Layout: Layout work demands precision and uptime. Rechargeable power means one less variable to manage when accuracy matters most.

Interior Leveling and Framing: Running the RL-H5A indoors for ceiling grids, partition walls, or floor leveling? The rechargeable kit eliminates the need to stock alkaline batteries in the truck for every service call.

Compatible Accessories

• Topcon RL-H5A Rotating Laser Level
• Topcon LS-80L Laser Receiver
• Topcon LS-80X Laser Receiver
• Topcon Carrying Case for RL-H5A
• Topcon Grade Rod and Clamp Accessories

Related Guides

• How to Choose the Right Rotating Laser for Grading Work
• Topcon RL-H5A Setup and Calibration Guide
• Rechargeable vs. Alkaline Batteries for Rotating Lasers: What Contractors Should Know
• Topcon RL-H5A Accessories Buying Guide

Frequently Asked Questions

Will this kit work with any other Topcon rotating lasers besides the RL-H5A?

The BT-79Q and AD-17B are factory-matched to the Topcon RL-H5A. While the battery may physically resemble components used in other Topcon models, Express Tools recommends using only the battery and charger specified for your exact instrument to avoid compatibility issues or damage to your equipment.

How long does the AD-17B take to fully charge the BT-79Q battery?

Typical charge times vary depending on the battery's state of discharge, but a full charge generally takes several hours. For best results, charge the battery overnight or at the end of the workday so it's ready for the next shift. Refer to your Topcon documentation for exact charge time specifications.

Is it worth switching from alkalines to rechargeable for the RL-H5A?

For contractors using the RL-H5A regularly — whether daily or several times a week — switching to the BT-79Q rechargeable kit provides clear cost savings over a single season. Disposable alkaline packs are a recurring expense; the rechargeable kit is a one-time purchase that pays for itself within weeks of regular use.

Can I leave the BT-79Q on the AD-17B charger overnight?

The AD-17B is designed to manage the charge cycle for the BT-79Q appropriately, but it's always good practice to follow Topcon's guidelines in the instrument and charger manual. Charging overnight to have a full battery ready for the morning shift is standard practice among contractors in the field.