Has the manufacturer never heard of a series diode?

Of course provided the design could cope with a 1.2 volt voltage drop, one
could fit a bridge and then it would not matter which way around it was.
Brian
Brian

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From the Sofa of Brian Gaff Reply address is active
"DerbyBorn" wrote in message
2.236...
A neighbour called me to tell me she had put new batteries in her CO2 /
smoke alarm and they were getting hot!
I went to look and as you can guess they had been fitted wrong - but I was
really surprised by the amount of heat they generated. (3 xAA)