Oldfart1 Posted January 23, 2009 Author Share Posted January 23, 2009 volt meter wont show anything you need to load the battery and test the result, ie pull 2 or 3 Ampls of it and check it stays above 11.8vor use a proper battery tester like most would on a service. The regs for your system required the battery to be chnaged every 5 yrs wether it needed it or not, but they may have said its due.... and you declined etc. I do have a battery tester, but it's rather Mickey mouse, so appreciate the tip about checking it with load. Had that a few times on RM, but we ask customer to sign to accept responcibility ie if we get called out due to battury failure - call out becomes chargeable ( Link to comment https://www.thesecurityinstaller.co.uk/community/topic/26422-ts-500-needs-new-battery/page/2/#findComment-221682 Share on other sites More sharing options...
Oldfart1 Posted January 27, 2009 Author Share Posted January 27, 2009 Just fitted the new battery. The old one showed 13.2V on the meter, but when a 2A load was connected across it - light bulb - that fell to 9.3V. Which underlines your point about not relying on no-load readings. Thanks again. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/26422-ts-500-needs-new-battery/page/2/#findComment-222168 Share on other sites More sharing options...
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