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A new Li-Polymer cell with a slightly different internal resistance curve can hit the BMS undervoltage cutoff at 3
Sudden shutdown at 20–30% on the Bea-fon X5 after a cell swap
AGM construction improves charge acceptance and reduces internal resistance
This is the most common complaint after a cell swap on the Evolve
Lenovo ET980 PDA Replacement Battery 3.7V 1200mAh 594637-221 A new Li-Polymer cell withLenovo ET980 3. 7V Li Polymer Replacement Battery (D0223) This is a 3. 7V, 1200mAh lithium polymer battery for the Lenovo ET980 PDA and Pocket PC handheld. It replaces OEM part number D0223. If your ET980 no longer holds a charge or powers on, this cell is the direct swap. ET980 platform fit: The ET980 line shares a single battery form factor across its PDA variants same voltage rail, same connector, same BMS handshake profile. D0223 is the OEM
