volt meter only reads with one battery

[craiglake]

I have dual battery's, on battery 2 the volt meter reads the voltage at battery, on battery 1 or both the meter reads about 10 to 11 volts , but voltage at battery reads 13 + - volts.
2006 225 hp Suzuki.

[artdf175]

sounds like a connection problem
take the wires off the battery clean up any corrosion
take some sandpaper and wire brush to connectors and posts
art

[craiglake]

volt meter

all connections at Battery are good. thanks for the reply

[Solarman]

If your boat has a battery switch (selectable for battery 1, battery 2, both, or off), check the terminals and connections on the switch. If all connections on switch are good, you may have a bad switch if only reading from one battery (maybe bad contacts in switch)?

Good luck.

[bezerk]

put the white wire (has a fuse ) too the common post on the battery switch.

[Striperk9]

switch issue

I had a similar problem with my switch. Someone had taken apart to clean, and when they reassembled, they put the contact in upside down. Caused me a lot of headache until I took that apart and realized what they had done.

You could also have something connected to battery 1 feed that is draining your system. To pull it down that much it seems like it would be causing more problems.

[RayBersch]

Remove the switch from the equation, connect a battery, see what it reads, duplicate that for the other battery.