i have a ups from tripplite witch is somthing it dose not do i want to put it on a car battory in a rubbermaid tub want to use an externel charger need to know how sorry not that good at spelling
did you mean powerup UPS with car battery & need to charge it from UPS itself ?
most UPS desinged for charge Sealed leadAcid batteries at constant voltage. charging current 1/10 of battery Ah rating. So its take very long time to charge a car battery.
easiest way is build 14.4V 5A power supply and attach it to battery.
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