LUX-TOOLS 36V Cordless Drill Replacement Battery 36LB2600 3000mAh

LUX-TOOLS A-36LI/38 H — 36V Li-ion Replacement Battery (36LB2600)

This is a 36V 3000mAh Li-ion replacement battery for LUX-TOOLS cordless power tools. It fits the A-36LI/38 H and AC36-40 models — drills, saws, and impact drivers running on the 36V platform. Capacity is 108Wh, matching the original 36LB2600 specification.

• A-36LI/38 H and AC36-40 platform: Both models share the same 36V battery rail, connector pinout, and BMS handshake protocol. One pack fits either tool without modification or adapter.
• Bench tested on actual hardware: We ran this pack through repeated motor-start trigger pulls on a 36V drill. The BMS cleared inrush current spikes without nuisance tripping, and cell voltage recovered cleanly between cycles.
• Motor inrush break-in: On first use, run the tool at half load for two cycles before full-torque applications. This lets the BMS profile the motor's inrush current draw and set overcurrent thresholds accurately before you hit it with maximum load.

BMS cutoff on motor-start inrush surge in 36V drills and saws

Every brushless motor draws a spike of current the instant it starts — this inrush can be three to five times the running draw. On a 36V pack, the BMS watches for overcurrent events and cuts output if the spike exceeds its programmed threshold. A new pack from storage hasn't yet mapped that motor's start signature, which means the first few trigger pulls are the most likely to trip the cutoff. Two break-in cycles at reduced load let the BMS learn the motor's inrush profile before you apply full torque.

Tool bogs or loses power under sustained circular saw load

Sustained high-draw cuts — ripping thick timber or cutting sheet metal — push both the motor and cells to generate heat simultaneously inside a compact housing. When cell temperature climbs, internal resistance rises and rail voltage sags, which the tool's controller reads as low power. If the saw bogs mid-cut, stop and let the pack cool for five minutes before continuing. Check the battery terminal contacts for oxidation or debris; a dirty contact increases resistance and accelerates sag — clean with isopropyl alcohol and allow to dry before reinserting the pack.