Battery splitters

[rogerthebodger]

Looking through the Vetus catalogue I noticed that their battery splitter used MOSFET's in diode mode and claimed a volt drop of only 0.1 volt where the normal silicon diodes would have 0.7 volt drop.

Any one used this type of battery splitter and is this the case.

Having made splitters in the past for my previous boat using silicon diodes has any one considered making their own using suitable MOSFET's with a suitable sized heatsink

 

[Koeketiene]

Ahem

http://www.ybw.com/forums/showflat.php/Cat/0/Number/1753266/an/0/page/2#1753266

/forums/images/graemlins/wink.gif

 

[rogerthebodger]

Yes I did see yours but I need to fit a 3 way splitter on my new yacht.

 

[PCUK]

You would be well advised to fit an external regulator to your alternator (Adverc or similar) to give maximum charge and then there is no problem with diode splitters as the sense cable by-passes the diodes straight to the batteries.

 

[earlybird]

Are these similar to the "X-Split" from Driftgate 2000"? I have fitted these to my last 2 boats and thoroughly recommend them, truly fit and forget. They claim 80mV drop @ ~ 100A, which seems about right, and are fully encapsulated. There is no heat sink, other than the body of the device, presumably due to the low electrical loss.

 

[GeorgeTina]

Have used a Mosfet splitter on my yacht for 4 years. Volt drop around 30 mV on normal output from 55Amp alternator (spec 100 amps and 100mV max). Bought from Bartons IIRQ.

 

[rogerthebodger]

Do you have more details of the Mosfet splitter you have on your yacht may be a web site URL

Thanks in advance.