About this replacement
Snap On/Sun LS2000 & UEI ADL7100 — 6V Ni-MH Replacement Battery (NA150D04C095)
This 6V 2000mAh Ni-MH pack replaces part number NA150D04C095 in the Snap On/Sun LS2000 automotive diagnostic scanner and the UEI ADL7100. Both tools share this battery format, voltage rail, and connector pinout. Capacity is rated at 12Wh — matching the original specification.
- LS2000 and ADL7100 platform fit: Both tools run on the same 6V cell stack with identical connector orientation and BMS handshake thresholds. Swapping between models requires no wiring changes — the pack seats and communicates the same way on either unit.
- Bench tested on actual hardware: We cycled this pack through scanner boot sequences and live vehicle scan sessions. The BMS held voltage within tolerance during OBD initialisation, where a brief current spike occurs as the scan tool powers its communication circuitry.
- Post-install calibration on the LS2000: After fitting a new pack, run the scanner through a full vehicle system scan before relying on the battery indicator. The LS2000 maps cell state during active use, and the charge indicator will read inaccurately on the first session if you skip this step.
Why the LS2000 cuts out when connecting to a vehicle's OBD port
When the LS2000 establishes an OBD-II connection, it powers its communication module and pulls a short current spike — typically within the first two seconds of link negotiation. A degraded or deeply discharged cell stack can't sustain voltage through that spike, and the BMS trips the output to protect the cells. The scanner shuts off at the moment it should be reading data. A healthy 6V pack holds above 5.4V under that transient load — if yours drops below that, the cutoff triggers before the session starts.
Pack won't charge after the scanner sat unused in a carry case for months
Ni-MH cells self-discharge at roughly 1–3% per day at room temperature. After several months unused, the pack can fall below the charger's detection threshold — the charger sees insufficient voltage and refuses to begin a charge cycle. This is a BMS sleep state, not a dead pack. To recover it, apply a slow trickle charge at a low rate (C/10 or lower) until the terminal voltage rises above 5.0V — at that point the standard charger will recognise the pack and resume a normal cycle.