Battery Issues

taza

Guys any help appreciated.

Checked voltage at alternator 14.4v at the battery only reads 13v,also tried to lift & lower the engine hatch using a good battery on the hatch overrides, My boat is a 2007 Rinker Express 280 Volvo Penta 5.7ltr Engine

skennelly

So your batteries are dead and you can't get the hatch open...even using the hatch overrides?

a little more explanation would help.

taza

They were drained to the point the engine wouldn’t start, but just enough to open the hatch.
once I got them fully charged and read up on how to open engine hatch in the event of flat battery I thought I would have a go opening the hatch via the override connections but it wouldn’t work ? 

skennelly

The hatch overrides work to open and close the hatch based on what terminals you put the positive and negative battery connections to.  One way will open the hatch and reversing it will close it.  Perhaps you were trying to close it.  Was it making any sounds?

taza

Tried it both ways no sound at all, I had the hatch half way open when I tried this 

GMSLITHO

maybe a fuse to the motor 

taza

It works on the switch 

Ian

Yeah I think the "+" and "-" are misleading suggesting that's the only way to connect - reverse the connection and it should operate if all is well. Perhaps crack it open a few inches first the regular way then try swapping around. If nothing there must be another issue between the poles and the drive connections.

taza

Going back the boat this weekend will check the wiring 👍

taza

Anyone any idea why the high voltage drop at the batteries ? 

F1100

perhaps your battery islolater. Check it with a diode function on your multimeter

taza

I love google 👍 just had a look how to check 
thanks guys

taza

Sorted the problem out with the issue with the hatch override studs, on the Rinker Electrical drawing it shows the studs  wired straight to the motor, but after investigating there are two fuses one on each supply + & - the fuse had gone on the negative side 👍

also checked the isolator with multi meter set on diode check, readings both fine 👍