About this replacement
GreenWorks GD60AB / GD60LT Series — 60V Li-ion 8.0Ah Replacement Battery (LB602 / 2918307)
This is a 60V Li-ion replacement battery rated at 8000mAh (480Wh), compatible with GreenWorks GD60AB, GD60LT, and the broader Pro 60V platform including the 16" brushless chainsaw, string trimmer, and leaf blower combo. It replaces OEM part numbers LB602, 2918307, G60B2, G60B4, and LB605. The cell chemistry and BMS voltage thresholds match the 60V tool rail directly.
- Pro 60V platform compatibility: GreenWorks built the GD60AB, GD60LT, and the broader Pro 60V line around a shared 60V nominal rail and a common latch-and-contact interface. The BMS in this pack communicates over the same three-pin signal line the charger and tool expect, so the handshake clears without modification.
- Bench tested on actual hardware: We cycled this pack through motor-start inrush loads matching the GD60AB drill and the 16" chainsaw at full-bar cuts. The BMS held the overcurrent threshold correctly across cold and warm cycles — no false trips on first trigger pull.
- Break-in load protocol for Pro 60V tools: On the first two cycles, run the tool at half load — mid-trigger on the drill, light brush passes with the trimmer. This lets the BMS log inrush current from your specific motor before locking its overcurrent trip threshold. Full-torque applications from cycle three onward.
BMS cutoff on chainsaw and drill motor-start inrush surge
The Pro 60V chainsaw and brushless drill pull a short but steep current spike the instant the trigger closes — this is motor-start inrush, and it can be two to three times the steady-state draw. A BMS that hasn't profiled the motor yet may read that spike as a fault and cut power before the blade or bit reaches speed. The pack recovers in seconds, but the trip repeats on every cold start until the BMS has logged enough cycles to distinguish inrush from a true overcurrent fault. Running the break-in protocol above resolves this on most units within two charge cycles.
Tool bogs or loses power mid-cut under sustained chainsaw load
Sustained chainsaw cuts — particularly through hardwood — pull continuous high current that raises both motor and cell temperature simultaneously. When cell temperature inside the pack climbs past the BMS thermal threshold, it steps down the current limit or cuts output entirely to protect the cells. This is not a fault; it is the thermal protection working as intended. Let the pack rest off the tool for 10–15 minutes, check that the contact terminals are clean and fully seated (corroded contacts raise resistance and heat cells faster), then resume at a lower duty cycle.