NShi 7.2V 2200mAh Ni-MH laptop battery for TAIT TP8100 TP8110 TP8115 TP8120 TP8135 TP8140 TP9300 TP9400

Replacement battery for TAIT TP8100 series

This Ni-MH pack delivers 7.2 volts and 2200mAh capacity, matching the original T03-00011-CAAA, TPA-BA-100, TPK-BA-100, TPK-BA-101 and TT35L1-D part numbers. It fits the TP8100, TP8110, TP8115, TP8120, TP8135, TP8140, TP9300 and TP9400 radios. The 15.84Wh energy rating supports typical duty cycles for these devices.

Practical limits of Ni-MH chemistry

The 2200mAh capacity sets a fixed runtime ceiling that cannot be exceeded without a larger pack. Ni-MH cells exhibit self-discharge over weeks of storage, so the battery should be cycled before extended missions. Memory effect can reduce usable capacity if the pack is repeatedly topped up without full discharges. Voltage drops gradually during discharge rather than holding a flat plateau.

Straightforward swap with polarisation key

The pack slides into the radio battery rail and locks with the existing latch; no tools are required. Polarity is keyed by the moulded shell, preventing reverse insertion. The most common issue is seating the pack fully until the latch clicks — an incomplete seat leaves the contacts floating. Old cells that have sat uncharged for months may need two or three full cycles to recover rated capacity.