A quick invitation to your PB 160 to re-savour life must include resetting the PMU. Remove the AC adapter (always from the PB first, and then the wall outlet), then the system battery, and then allow the PB some 10min. of self-reflection and time to reset its logic board.
With two toothpicks or paperclips, simultaneously hold in the two recessed (interrupt and reset) switches, on the rear beside the power switch, for 10sec or so. Then connect only the AC adapter (always powered on from the wall before connection to the PB) and see whether it will boot. If it does, leave the PB connected to the mains after shutdown, but now with the system battery in place. In this way you ascertain the PB's ability to boot without hindrance from a poor battery, and then give the battery a chance to recharge (for at least 24hr), and when the system battery reaches close to full voltage (7.5VDC), the internal backup battery will begin to recharge.
Nail this to your 'frig. door for future reference.
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With two toothpicks or paperclips, simultaneously hold in the two recessed (interrupt and reset) switches, on the rear beside the power switch, for 10sec or so. Then connect only the AC adapter (always powered on from the wall before connection to the PB) and see whether it will boot. If it does, leave the PB connected to the mains after shutdown, but now with the system battery in place. In this way you ascertain the PB's ability to boot without hindrance from a poor battery, and then give the battery a chance to recharge (for at least 24hr), and when the system battery reaches close to full voltage (7.5VDC), the internal backup battery will begin to recharge.
Nail this to your 'frig. door for future reference.
de