Christophe wrote:Ben instead of grumbling, buy no more and take rechargeable 9V batteries!
If you don't know where to find it: https://www.econologie.com/shop/accu-9v- ... p-243.html
Problem with the rechargeable 9V: the nominal voltage is 7,2 volts suddenly many devices consider that the battery is flat when the battery is fully charged, eg the voltmeter will display "Low Batt".