About this replacement
Wolf Garten GTB 36 Cordless Grass Trimmer — 36V Li-ion Replacement Battery
This 36V 1800mAh Li-ion pack replaces the ABP 36-03 (part 196-119-650) across Wolf Garten's 36V cordless range. It fits the GTB 36 grass trimmer and runs on the same shared 36V platform as several other Wolf Garten tools. Voltage matches the original spec — 36V nominal, 64.8Wh total energy.
- Cross-tool 36V platform compatibility: The GTB 36, LBB 36, HSB 36, and CSB 36 all share the same 36V connector and BMS communication protocol, so one battery works across the lineup without adapters.
- Bench tested on actual hardware: We ran full charge and discharge cycles — the BMS held voltage steady under motor load and cut out cleanly at the low-voltage threshold without tripping the tool's fault protection.
- First-charge conditioning for Li-ion packs: Run the battery through two or three full charge and discharge cycles before heavy trimming sessions — this lets the cell chemistry stabilise and the BMS calibrate its capacity tracking accurately.
Why 1800mAh instead of the original 3.0Ah matters in practice
The OEM ABP 36-03 ships at 3.0Ah. This replacement sits at 1800mAh — roughly 60% of that capacity. The trimmer will run at full 36V cutting power throughout the session. Session length will be shorter than the original pack, so this unit suits lighter trimming tasks, backup use, or situations where the original battery is unavailable.
Trimmer powers on but cuts out under load — here's why
If the GTB 36 starts but stalls when the cutting head meets thick grass, the BMS is likely hitting its overcurrent threshold. This happens when a worn cutting line makes the motor work harder than it should. Replace the trimmer line first, then retest. If the fault persists, check that the battery contacts are clean and seated fully — dirty contacts increase resistance and trigger premature BMS shutdowns.