A Comparrison of Manual Battery Chargers Vs. Automatic Battery Chargers
Here is so information that may help you decide what charger is best for your batteries. There are two types of battery chargers: manual and automatic. Manual chargers constantly charge your battery therefore require constant supervision so you don’t damage your battery. I recommend getting an automatic charger since the charger automatically monitors the charge. What an automatic charger does is, decrease the rate of charge when it senses the battery becoming close to a full charge. So it effectively shuts off when a full charge is reached. However, some charging does still continue so a charger should not be left attached to a battery for over 24 hours.
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12V Vic