Which of these chargers?

Share or ask any marine related technical information about not just Norfolk Broads boats but all vessels in general and help others to fix their boats.
User avatar
David
Posts: 80
Joined: June 3rd, 2017, 8:33 am

Re: Which of these chargers?

Post by David » June 10th, 2017, 7:38 pm

Yes a normal car charger will be ok for a while but unless it is an intelligent version don't leave switched on all the time, if you are using battery power all the time then leave it on trickle charge, I presume that the outboard has a facility to recharge its cranking battery, also make sure that both the lesure and cranking battery are not connected together when the engine is not running the negatives can be connected but the positives should only be linked when the engine is running, this can be done with a 60a really or a manually operated isolation switch, the relay can be activated by the ignition switch.


A boat makes a big hole in the water in to which you throw money

High Seas

Re: Which of these chargers?

Post by High Seas » June 11th, 2017, 1:42 pm

What would happen if the + were connected when the engine was off? Would the batteries level one out due to difference in battery type?

User avatar
David
Posts: 80
Joined: June 3rd, 2017, 8:33 am

Re: Which of these chargers?

Post by David » June 11th, 2017, 2:13 pm

What would happen is as you were using your domestic battery you would draw power from both batteries and if you had prolonged heavy current draw you could get to a point were there is not enough power left in the cranking battery to start the engine, that's why it's good practice to have the batteries split when the engine is not running, that's normally achieved by splitting the +.
A boat makes a big hole in the water in to which you throw money

High Seas

Re: Which of these chargers?

Post by High Seas » June 11th, 2017, 2:43 pm

Oh yes got to have a splitter and don't swap battery switch when engine is running as blows the diodes.

Post Reply