Adding house battery - reserve minutes

[badrano]

I'm looking to add a house battery, but I can't seem to make up my mind on whether to go with the group 24 (130 min reserve) or the group 27 (175 min reserve). I currently have a group 24 bat and I have the room where the current battery is to add a dual grp 24 bat tray. There is room for a dual grp 27 but I really don't want to buy 2 new batteries, but I don't believe I have the room to add 2 different trays.

As far as amp draw, it would mostly be the stereo and I don't know (tried to look it up) what an average amp draw is for a basic marine stereo. I have no plans to add a boom box to my boat.
My other scenario for amp draw is to anchor at night on the river to watch the 4th July fireworks so nav lights would be an additional draw and most likely a VHF radio.

Any suggestions?

 

[mr 88]

You can run two different size batteries. Buy the 27 and matching tray , your radio can run all day and night and then some with that battery. As far as lights go you should be good to go with that as well,your only looking at a few hours of run time to watch fireworks or whatever. Someone will reply with amp draw for lights etc. If worried you can always go LED as they don't draw like a incandescent bulb does.

 

[Mohawkmtrs]

+1 on going with the Group 27 deep cycle...better to have extra capacity for future expansion i.e. VHF radio, chart plotter, etc.

I would also strongly suggest an LED bulb for the anchor light...they only draw about 10% of an incandescent bulb.

I'm installing a radio that has a 10 amp fuse in it.