The MFT knows which type of battery it has in it and I presume the voltage indicator adjusts accordingly. I constantly have a bag of old batteries in my van to leave in a recycling bin, usually the one at a Screwfix, it does seem a inefficient way of working. The number of batteries from smoke alarms is decreasing significantly as the new alarms generally have sealed batteries, the next biggest quantity of old batteries are from the testers, it has also dropped as the MFT has rechargeable batteries in it, so swapping over the batteries in the other testers seems logical as a green measure and as a cost saving in the long term.
The MFT knows which type of battery it has in it and I presume the voltage indicator adjusts accordingly. I constantly have a bag of old batteries in my van to leave in a recycling bin, usually the one at a Screwfix, it does seem a inefficient way of working. The number of batteries from smoke alarms is decreasing significantly as the new alarms generally have sealed batteries, the next biggest quantity of old batteries are from the testers, it has also dropped as the MFT has rechargeable batteries in it, so swapping over the batteries in the other testers seems logical as a green measure and as a cost saving in the long term.
