I'm trying to charge a 24V battery, which would discharge to an LED and buzzer just in case a 120Vac power supply is cut-off. So this battery is not in use probably for a long time, hopefully 5 or more years. Thing is, a battery seller told me that it's better to use a UPS board instead of a charger to discourage back-current just in case the battery is in use.
1. What exactly does a UPS board do (in my specific case)?
2. Any websites (instead of wikipedia) that explain this?
after-question: What is the best battery to use in my case that it might not be used for a long time?
1. What exactly does a UPS board do (in my specific case)?
2. Any websites (instead of wikipedia) that explain this?
after-question: What is the best battery to use in my case that it might not be used for a long time?