Good advice from Jim K, I wonder if Gennadiy's input power plugs & sockets or cable or trip fuse have got loose, dirty, high resistance ?
Doesnt seem a battery problem, but always worth checking: One can measure a battery's internal resistance by disconnecting, & connecting across a car headlamp bulb(s in parallel) (old incandescent hungry bulbs, not lower power modern LED) (If using bulbs in parallel, be careful not to exceed a battery's max discharge for long else they will heat, plates mught buckle ?) V (diff. between open circuit & on load ) / I (current into bulbs) = Resistance (bat internal [+ any lead up to voltage measuring point]) eg bad bat: ( 13 - 11 ) / 4 amp = 0.5 ohm good bat: ( 12.6 - 12 ) / 4 amp = 0.15 ohm Cars have combined bulbs for dipped & main beam with 3 spade terminals, normaly only one filament blows & car owners throw away bulb with one good filament. For decades I've told friends: save `dead' bulbs, those `dead' bulbs will be ever more popular as test loads, as people start to want to also test solar cells & their bats too, as well as for UPS. PS I hope Gennadiy & Jim on list, as I dropped their cc @gmail, 'cos I don't want bounces from monopoly ad. co. google forcing mail `standards'. Cheers, -- Julian Stacey. Arm Ukraine. Contraception V Global Heating. Gmail & Googlemail Fail http://berklix.org/jhs/mail/#bad _______________________________________________ Nut-upsuser mailing list [email protected] https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
