About this replacement
Newland MT93 / MT93 Megattera — 3.85V Li-ion Replacement Battery (BTY95L)
This is a 3.85V, 5000mAh Li-ion replacement battery for the Newland MT93 and MT93 Megattera mobile data terminals. These handheld scanners are used in retail and logistics for inventory management, asset tracking, and point-of-sale scanning. It replaces OEM part number BTY95L directly.
- MT93 and MT93 Megattera compatibility: Both models share the same battery bay geometry, connector pinout, and BMS handshake protocol, so one cell covers the full MT93 platform. No hardware modification needed.
- Bench tested on actual hardware: We ran this pack through the MT93's charge cycle and monitored the BMS under combined wireless and scan-trigger load. The protection circuit held voltage within spec through rapid-burst scanning sequences without tripping prematurely.
- First-shift preparation: After installing, seat the scanner in its charging cradle for a full charge cycle before you start picking. Scan-trigger inrush current spikes hardest when the cell is near minimum charge — a fully charged cell prevents false BMS trips during the first shift of use.
Why the MT93 loses wireless connection during rapid scan bursts
The MT93 runs both the imager and a wireless radio simultaneously. During a fast scan burst, the combined inrush from the imager trigger and the radio transmit cycle creates a momentary voltage sag on the battery rail. If the cell is aged or partially discharged, that sag can cross the BMS undervoltage threshold and briefly drop the radio link. This replacement pack's fresh cell chemistry keeps internal resistance low, which reduces the magnitude of that sag under combined load.
Cradle shows a charging error immediately after fitting the new pack
This is almost always a contact resistance issue, not a faulty cell. The cradle's charge contacts read the pack's BMS data line before initiating charge — any oxidation or debris on the battery's gold contacts breaks that handshake. Wipe the battery contacts and the cradle pins with a dry lint-free cloth, then reseat the pack firmly. If the error clears, the dock will begin charging normally; if it persists, check that cradle firmware is current, as some MT93 docks require a firmware update to recognise replacement packs above 4800mAh.