About this replacement
Akai LIVE II / MPC Live Series — 14.4V Li-ion Replacement Battery (1ABTSB-DUPS-168)
This is a 14.4V, 2600mAh lithium-ion battery for the Akai LIVE II portable amplifier and MPC Live series. It replaces OEM part numbers 1ABTSB-DUPS-168 and BT4-YH001L. If the original cell has degraded and the unit no longer holds a charge through a set, this is the direct swap.
- LIVE II, MPC Live, and MPC Live MK2 compatibility: These three units share the same 14.4V battery rail, connector pin-out, and BMS handshake protocol — a single cell revision covers all three without adapter or firmware change.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the LIVE II platform. The BMS registered correctly on first insertion, accepted a full charge without entering protection mode, and delivered consistent voltage across varying output loads.
- First-cycle conditioning for portable amps: Run the amplifier at 50% volume for the first full charge cycle. Full-volume operation draws peak current from an uncalibrated cell and can trigger a premature BMS trip before the cell reaches its rated delivery capacity.
Amp shutting off before the battery indicator reaches empty
The LIVE II's amplifier circuit requires a minimum voltage to sustain audio output — typically above what the battery gauge display treats as "empty." When a degraded or new uncalibrated cell sags under load, the amp's internal protection kicks in before the indicator suggests it should. This happens more often at higher gain settings where current draw spikes. After two or three full discharge-recharge cycles, the BMS recalibrates its state-of-charge estimate and the shutoff point aligns more closely with the gauge. If it persists beyond five cycles, check resting voltage after a full charge — it should read at or above 16.4V.
Audio clipping or distortion at moderate volume on a fresh battery
Clipping at mid-volume on a new cell usually points to voltage sag, not a speaker or driver problem. Under sudden audio transients — bass hits, high-gain passages — the cell's internal resistance causes a momentary voltage drop that the amp interprets as a supply fault, compressing or clipping the output. A cell that is not yet conditioned shows higher internal resistance than a cycled one. Run three full charge-discharge cycles at moderate volume and retest; sag-induced clipping typically reduces once the cell's internal resistance drops into its rated range.