About this replacement
Point Mobile PM45 — 3.85V Li-ion Replacement Battery (45-BTSC)
This is a 3.85V, 3000mAh Li-ion battery for the Point Mobile PM45 rugged handheld barcode scanner. It replaces OEM part 45-BTSC and fits the PM45 directly — same connector, same BMS handshake. Capacity is 3000mAh (11.55Wh), matching the original specification.
- PM45 platform fit: The PM45 runs a single-cell 3.85V architecture with a BMS that validates pack identity on boot. This replacement carries the correct voltage rail and protection circuit the device expects — no boot rejection, no pairing prompt.
- Bench tested on actual hardware: We cycled this pack through scan-burst and wireless polling loads simultaneously. The BMS held voltage above the device's minimum threshold throughout and did not trigger an early cutoff under combined inrush.
- First-shift preparation on the PM45: After installing, place the scanner in its cradle for a full charge cycle before use. Scan trigger inrush current is highest when the cell is near minimum charge — a fully pre-charged pack prevents false BMS trips on the first pick-and-pack shift.
Cradle showing a charging error on a new PM45 pack
A charging error on the PM45 cradle with a new pack is almost always a contact resistance issue, not a fault with the cell itself. Warehouse environments leave dust and handling oils on the gold contacts at the base of the battery. The cradle reads high resistance across the contacts and interprets it as a damaged or incompatible pack. Wipe the battery contacts and the cradle pogo pins with a dry cloth, reseat the pack firmly, and the error clears in most cases.
PM45 losing wireless connection during rapid scan bursts
During a fast scan burst, the PM45 draws simultaneously from the imager, the wireless radio, and the processor — combined inrush that can cause a momentary voltage sag on a partially depleted cell. When voltage dips below the BMS floor, the radio stack drops its connection before the imager does. This appears as a wireless dropout mid-shift rather than a full shutdown. Starting each shift with a fully charged pack keeps the cell voltage above the sag threshold during peak combined draw.