Battery drain


F

formulatr

Member
Seems to have the port battery drain pretty quickly at anchor. Only have fm radio on and cockpit refrigerator. Carbon monoxide detector beeps turn key to start and have nothing. Putting on both batteries then an easy start
 
How old is the battery, and what type/size? Is it always on a charger, what about winter? It may have just lost it's capacity over the years.
Otherwise you need an amp meter to monitor load on the battery and start disconnecting loads to see what they pull / determine if it's more than normal.
 
Put a hand held meter on the Bat after it's turned OFF. If it goes quickly down below 12.5V then may have a shorted cell

If a lead acid Bat ever falls below 11.75 it can be damaged and may not come back
 
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