About this replacement
Leica Disto L360 — 2.4V Ni-MH Replacement Battery (91505701)
This is a 2.4V, 4500mAh Ni-MH battery for the Leica Disto L360 handheld laser distance meter. It replaces OEM part 91505701 directly. The Disto L360 is used on construction sites and in surveying work where consistent power matters during measurement sessions.
- Disto L360 pack fit: The L360 uses a fixed 2.4V Ni-MH cell configuration with a specific connector and BMS handshake tied to the instrument's power management circuit. Swapping chemistry or voltage — even slightly — will cause the device to reject the pack or report incorrect charge state.
- Bench tested on actual hardware: We cycled this pack through the Disto L360's charge and discharge sequence. The BMS accepted the cell voltage on first contact, and the instrument reached full charge without triggering a fault code.
- First-use calibration on the L360: After installing this pack, run a full calibration cycle through the instrument menu before taking it to site. The L360 maps battery state during calibration — skip this step and you will see premature low-battery warnings during your first measurement session, even with a fully charged pack.
BMS lockout after the Disto L360 sat unused in a carry case for months
Ni-MH cells self-discharge over time. If the L360 sits unused long enough, the pack voltage drops below the BMS recovery threshold and the instrument will not power on at all. This is not a dead battery — it is a protection state. To recover, connect the charger and leave it for a minimum of 24 hours without interruption. The BMS needs a low-current trickle input to climb back above the recovery voltage before it will accept a normal charge cycle.
Disto L360 shuts off mid-measurement with no low-battery warning
This happens when the laser and processor fire simultaneously, pulling a short current spike that the BMS reads as an overload. An aged or partially discharged cell cannot hold voltage under that combined draw. The BMS trips as a precaution and cuts power instantly — no warning, no gradual fade. Charge the pack to full, run the instrument calibration sequence, then retest. If the shutdown repeats at full charge, the cell capacity has degraded below the L360's minimum operating threshold and the pack needs replacing.