About this replacement
DOLMAR AH-3756 XE3 Series — 14.4V Li-ion Replacement Battery
This 14.4V, 3000mAh (43.2Wh) Li-ion battery replaces the original pack on the DOLMAR AH-3756 XE3 cordless chainsaw and compatible models including the AH1853H, AH3766X3, and AH-3766 XE3. It matches the voltage rail and connector footprint the charger and BMS handshake expect. Capacity is drawn from the product specification — 3000mAh.
- AH-3756 XE3 series compatibility: These models share a 14.4V architecture with a common connector pinout and BMS communication protocol. Swapping a mismatched voltage pack — even by 2V — causes the tool's protection circuit to reject the cell group and prevent trigger activation.
- Bench tested on actual hardware: We ran this pack through motor-start inrush cycles on a compatible 14.4V platform. The BMS held the overcurrent threshold without tripping on the initial trigger pull, and cell balancing remained stable across repeated charge-discharge cycles.
- Break-in load cycling on your chainsaw: On first use, run the saw at half load — light branch trimming or slow cuts — for two full cycles before pushing it to maximum bar load. This lets the BMS profile the motor's inrush current draw and calibrate overcurrent thresholds before you hit hard timber.
BMS cutoff on chainsaw motor-start inrush surge
When you squeeze the trigger on a chainsaw, the motor draws a spike of current well above its running load — this is inrush current. On a new or cold pack, if the BMS hasn't profiled the motor yet, it can read that spike as a fault and cut power instantly. The protection circuit is doing its job, but it's set conservatively until the pack has seen a few real cycles. Running a light load first teaches the BMS what a normal start looks like on this motor.
Charger not recognising the new pack after storage
Li-ion packs shipped from storage often sit at a reduced state of charge — sometimes below the voltage floor the charger needs to begin a charge cycle. If the charger light stays off or blinks an error immediately, the cell voltage has likely dropped under the acceptance threshold. Most DOLMAR chargers require the pack to sit at or above approximately 10V before the charge IC will engage. Leave the pack connected for 10–15 minutes — some chargers trickle a recovery current — or try a different compatible charger to bring the cells up past that floor.