About this replacement
Deviser DS2500R — 14.4V Li-ion Replacement Battery (HYLB-1180)
This is a 14.4V 2500mAh (36Wh) lithium-ion battery for the Deviser DS2500R survey and laser measurement instrument. It replaces OEM part HYLB-1180 directly. The DS2500R draws on this pack to power its ranging circuits, display, and onboard data logging during field measurement sessions.
- DS2500R platform fit: The DS2500R uses a 14.4V rail with a BMS handshake that validates cell voltage and pack temperature before enabling the measurement circuits. This replacement pack meets that voltage profile and connector pinout, so the instrument recognises the pack at boot without triggering a battery fault code.
- Bench tested on actual hardware: We cycled this pack through instrument power-on, sensor initialisation, and sustained ranging loads. The BMS held stable across probe start-up current spikes and did not trip into protection mode during back-to-back measurement sequences.
- Pre-deployment calibration cycle: After fitting this pack, run a full calibration cycle through the DS2500R instrument menu before taking it to site. The instrument maps battery state during calibration — skipping this step causes premature low-battery warnings during the first measurement session, even when the pack is fully charged.
BMS cutoff when the DS2500R initialises its ranging sensor
At power-on, the DS2500R energises its laser ranging module in a short current spike that can exceed 1.5A for under a second. A degraded original pack often drops below the BMS undervoltage threshold during this spike, triggering protection cutoff before the instrument fully boots. This replacement pack's cells sustain voltage under that initialisation load without sagging into cutoff territory. If the instrument still cuts out at boot, check that the pack is charged above 15.2V before powering on.
DS2500R readings resetting mid-logging session
During extended logging, the DS2500R draws continuous current across its sensor array, display backlight, and data storage simultaneously. If cell capacity has faded, voltage sags under this combined load and the instrument interprets the dropout as a power fault, resetting the active session. This is not a firmware issue — it is a cell capacity problem. Replacing the pack and confirming the new battery reads above 14.0V under load resolves the mid-session reset.