Ensoniq ESQ-1 Battery Replace Still Low Battery

Hi there. I ordered an ESQ-1 battery from here and just took a few hours to swap the battery. I turned the synth back on afterwards and I’m still getting the low battery message. I factory reset it, same thing.

I made sure to put the battery in the correct orientation. Does anyone know why this may be happening?

I’m assuming that you checked the new battery with a voltmeter to make sure it was at full potential? Sometimes batteries that hang around for years lose charge…


Sorry, got busy with work. I hadn’t checked before since I wrongly assumed it would work. I will check now

Okay now I’m really confused. The battery is measuring above 3.3 Volts DC

Do you have everything put back together? If the keybed is left disconnected for example the Low Battery warning may still not go away.