Built for working tradiesthis listing covers two OEM parts pros reach for when they need their detector back on song: the Inficon 721-702-G1 lithium-ion battery for D-TEK Stratus / D-TEK 3, and the Inficon 712-102-G1S replacement circuit board for D-TEK Select. If youre chasing leaks all day and want fewer call-backs, these parts are fair dinkum the simple fix.

Who its for: licensed HVAC/R techs, apprentices and contractors who want OEM reliability and fewer hassles on site.

How it helps: the right battery keeps you on the tools longer; the right PCB restores D-TEK Select performance so you can trust your beeps and move on. Too easy, no worries.

Key features & trade benefits

• 721-702-G1 Li-ion battery (D-TEK Stratus / D-TEK 3) OEM fit and chemistry for dependable runtime, so you can finish a full days leak checks without hugging a wall charger.
• Approx. 810 hours per charge real-world runtime depending on detector mode; great for service runs and commissioning.
• 712-102-G1S PCB (D-TEK Select only) genuine replacement board to bring back stable sensitivity and accuracy, saving time on nuisance retests.
• Light, compact, job-ready easy carry in the tool bag; swap in seconds to keep momentum up between calls.
• OEM quality parts built to the detector spec, so your instrument integrity (e.g., EN 14624 performance on Stratus) stays right where it should be.

Why this product matters

Quick yarn: a tech in Western Sydney climbed up a tin roof in 40-degree heat to trace a stubborn R410A leak. Battery swap took seconds, detector stayed sharp, leak was nailed near a flare nut, and the system was back online before lunch. Thats the difference an OEM battery and a healthy board makefast diagnoses, fewer call-backs, happier clients. Shell be right.

Need more gear or to compare detectors? Swing by our Leak Detectors collection for pro-grade options.

Pro tip

Label batteries with a month/year and rotate them. For PCB swaps, use an ESD strap and follow the service manual stepsseat connectors fully and avoid pin stress. A careful 5-minute bench job beats hours of head-scratching later.

Compatibility & system info

• 721-702-G1 battery: compatible with INFICON D-TEK Stratus and D-TEK 3.
• 712-102-G1S circuit board: compatible with INFICON D-TEK Select (not for Stratus/3).

Local note: Brisbane humidity and Perth rooftop heat can be brutalkeep a spare battery charged in the van and youre laughing.

Whats included

• Option A 721-702-G1 Li-ion battery (1 pc)
• Option B 712-102-G1S replacement circuit board (1 pc)

Specifications

Warranty & returns

These are genuine OEM parts supplied by HVAC Shop. Warranty is per manufacturer terms, and returns follow our store policy. For details, see Shipping & Returns before purchase. (If youre unsure, reach outripper service, quick replies.)

FAQs

Will the 721-702-G1 battery fit my D-TEK 3 as well as Stratus?Yepboth Stratus and D-TEK 3 use this OEM Li-ion pack, so you can standardise spares across the crew.

How long will it run between charges?Plan on roughly a full shiftabout 810 hours depending on mode and usage. Keep one charging and youll never be caught short.

My D-TEK Select is getting flakydo I need a new sensor or the PCB?If youve ruled out sensor age/filters, the 712-102-G1S board is the next logical step to restore stable performance. If you need the sensor instead, see the D-TEK Select infrared cell (712-701-G1).

}Do these parts affect Stratus compliance?Nousing genuine spares maintains your instruments intended performance. (Stratus detectors are designed to meet EN 14624 performance requirements when used as specified.)

Related products

• Looking to upgrade? D-TEK 3 gives you fast -up and easy sensorshandy if youre doing leak rounds all day.
• Keeping a Stratus spares kit in the van is a time-saverfilters and caps ready when you need them.
• If your Selects sensitivity has dropped, a fresh IR cell (712-701-G1) can make it feel new again.

For safe handling of refrigerants and compliance in Australia, see the Australian Governments refrigeration and air conditioning guidance: environment.gov.au.