Quote:
Originally Posted by mark pirate
individual testing with my Mallory professional battery tester is showing the uniross branded batterys are giving a higher output than the maplin & rs branded batteries
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I have come across ni-cad PP3's of different manufacture, some of which use six cells internally (7.2V nominal voltage therefore) and some which use seven (giving 8.4V). You could well find this is the case.
As for reverse-charging, it is easy to connect a 1N4003 diode in inverse-parallel across each battery, to prevent this. (Although not if you have clipped them all together!)