Dual Batteries setup with standard off/1/2/both type switch and VSR
Submitted by rchtan on Tue, 2012-07-03 09:41
Hi
I been reading a lot on dual batteries setup and would really appreciate if someone could comment/ point out where i could go wrong with the attached plan.
Thanks
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JohnSorrell
Posts: 137
Date Joined: 28/07/09
This configuration is OK but
This configuration is OK but it is possible that you will drain the starter battery using accessories.
I would connect accessories via a breaker to battery 2 +ve only not to the common side of the switch.
If you need to power accessories from the starter battery, then you can do so by switching to BOTH.
Gone Fishing...
JohnSorrell
Posts: 137
Date Joined: 28/07/09
Better option is this one
Better option is this one here:
http://www.bepmarine.com/media/product/pro4c27cffe9ee41.jpg
Basically, Switch 1 for Starter battery to Engine, Switch 2 for House Battery to Accessories, and Switch 3 for combining both batterys to both Engine and Accessories.
Gone Fishing...
Andy_b
Posts: 633
Date Joined: 19/10/11
good bloke when your a sleep
good bloke when your a sleep john!!!!!!!!!!!!!!! see ya sunday for some strippers and ufc
alfred
Posts: 3097
Date Joined: 12/01/07
Agree with John - Isolate the
Agree with John - Isolate the starting battery and set VRS to always charge starting battery first.
rchtan
Posts: 8
Date Joined: 22/02/12
HiI am confuse now. Isnt the
Hi
I am confuse now. Isnt the VSR supposed to isolate the starting battery when it fall below certain voltage? As for Battery 2 it connected to B2 of the switch not common.
Sorry really new to this
fishy fingers
Posts: 1719
Date Joined: 28/04/07
vsr
the vsr should always charge the starter battery (batt 1) and switch to charge batt 2 when it senses the volage drops when it reaches
full charge will switch back to trickle charge batt 1, next time you start if batt 2 needs charge thats what it will do then back to batt 1
rchtan
Posts: 8
Date Joined: 22/02/12
That what i wanted the VSR to
That what i wanted the VSR to do. Charge batt 1 and switch to batt 2 when it senses drop in voltage. Does my setup cater for that or do i still need to put an isolator?
JohnSorrell
Posts: 137
Date Joined: 28/07/09
The VSR protects the
The VSR protects the 'Starting' battery from been drained by accessories while engine is off, then allows both batterys to be charged while engine is running.
Gone Fishing...
fishy fingers
Posts: 1719
Date Joined: 28/04/07
not sure on your diagram
you seem to have your accesories positive connected to you ignition AND it seems commoned to the engine positive your
accessories should just connect to the battery 2 positive nothing else mine is that way, it means your switch panel is always live
but you can overcome this by adding another isolalor or breaker to switch off the accessories when not in use.
and yes your setup will do that you just need to change your accessory wire as I stated.
just as an after thought my VSR is a bep one with 3 way battery switch and has to have a negative connected to it
JohnSorrell
Posts: 137
Date Joined: 28/07/09
You don't need an
You don't need an isolator....
Just don't connect the switch COMM terminal to both the engine and the accessories.
Unless you enjoy waiting around for the gps to reboot and find a fix everytime you start the engine.
Gone Fishing...
rchtan
Posts: 8
Date Joined: 22/02/12
The 4 way switch and VSR are
The 4 way switch and VSR are from BEP, just that i forgotten to include the negative in the diagram.
Thanks I will move the accessories +ve terminal to B2 in the switch.