LiftMaster K41-0102-000 33A Battery Adapter Harness Kit

LiftMaster K41-0102-000 33A Battery Adapter Harness Kit

The LiftMaster K41-0102-000 is a 33A battery adapter harness service kit for select LiftMaster INSL24UL and IHSL24UL industrial slide gate operators. This kit is used where the battery backup connection adapters need replacement or where the service diagram calls for the 33A battery adapter harness. Battery harnesses are small parts, but they are important for reliable standby power, charging connection integrity, and proper battery circuit operation. Match the harness to the operator parts diagram and battery system before ordering.

This product page is written for buyers replacing a known LiftMaster part number, not for guessing from appearance alone. Many LiftMaster gate operator parts look similar across generations, so the safest ordering method is to match the part number from the original component, the operator parts diagram, or the model-specific service manual.

Compatible With

• LiftMaster INSL24UL industrial lite-duty commercial slide gate operator
• LiftMaster INSL24ULMC industrial lite-duty commercial slide gate operator
• LiftMaster IHSL24UL industrial heavy-duty commercial slide gate operator
• LiftMaster IHSL24ULMC industrial heavy-duty commercial slide gate operator

Also Known As / Related Part Numbers

• K41-0102-000
• LIF-K41-0102-000
• 33A Battery Adapter Harness Kit
• Battery Adapter Harness Service Kit
• Related battery part: 29-NP712 12V 7AH battery - verify operator requirements

Features and Specifications

Technician Notes

• This harness kit is for the battery connection area, not for replacing the operator batteries themselves.
• Poor battery connections can cause charging issues, low battery faults, or unreliable backup operation.
• If batteries are swollen, leaking, old, or load-tested weak, replace the batteries separately and do not rely on a harness repair alone.

Before Ordering Checklist

• Confirm the operator model is in the INSL24UL or IHSL24UL family.
• Verify K41-0102-000 in the service parts diagram.
• Check battery age, voltage, terminal type, and condition.
• Inspect existing harness connectors for heat, corrosion, or loose terminals.
• Disconnect AC power and batteries before servicing the battery circuit.

Professional Advisory

Battery backup wiring should be serviced with the operator powered down and batteries disconnected. A trained gate technician should diagnose repeated battery faults, charging faults, or wiring damage.

Product Questions and Answers

Does K41-0102-000 include the batteries?

No. This is a battery adapter harness kit. Batteries must be ordered separately if they are weak or damaged.

Which LiftMaster operators commonly use this harness?

It is commonly listed for the INSL24UL and IHSL24UL industrial slide gate operator series.

Can this fix a battery backup problem?

It may help if the original battery adapters are damaged or loose, but weak batteries, charger issues, wiring damage, and board faults should also be checked.