Loading

Custom battery Box Mod 12v

Custom battery Box Mod 12v

This is how I built my battery box for my Raymarine Element 7HV

So to start…

I decided to use two big batteries I already have, These go in my carp lounge rt4 bait boat.


The batteries are well-made and last ages.

You can make this same set up using the items I have listed below, with any batteries of your choice as long as they are between 15volts and 72volts (NO MORE or NO LESS)

My batteries as in this build are 2X Carp Lounge, Li-Ion Longlife Batteries 14,8V 14,5aH HI-C for RT4.

Both of these in parallel giving me an of 14.8v, TOTAL 29AH

From our rough calculations, We believe these will run the Raymarine Element 7HV for over a week fishing 12-hour days.

SEE BELOW AN INLINE FUSE IN MENTIONED. YOU WILL NOT SEE ONE IN MY BOX AS IT IS WIRED ELSEWHERE!!!

PLEASE WIRE IN A 1AMP FUSE TO PROTECT YOU AND YOUR GEAR

Custom battery Box Mod

I Continue…

ALL PARTS FOR THIS BUILD CAME FROM EBAY

IF YOU HAVE A 12V BATTERY THE CONVERTER IS NOT NEEDED.

Parts needed:

1 of each required below

Inline fuse holder (put this between your Sp17 Connector And the positive From Battery or converter)

1amp fuse

waterproof box. (i used a Peli case)

XT60 y connector/splitter (needed with my batteries and other RC Cars batteries)

2 pin SP17 Connector (any SP waterproof connectors are fine for all other kayaking wiring I use 2pin, SP13 plugs)

(15v-72v in) (12v 5amp out) converter

Batteries of your choice, wire 0.75mm, flux core solder, soldering iron, electrical tape.


CLICK BELOW TO BUY PARTS NEEDED:

Sp17 Connector fitted

12v battery Box Mod

The sidewalls of the Peli cases are very thick.

To get around this I put a sanding disk in my 4 1/2 grinder and sanded the inside and outside down a little.

So the connector would fit properly and the backing nut would do up nice and tight using all the thread inside the nut.

Also apply a bit of very strong sealant on the inside and outside around the connector for good measure.


I recommend CT1 for everything kayak related, It sticks to everything and is strong as F#!K.

It is expensive at around £10 a tube, But a tube goes a long way as not a lot is needed.

Custom battery Box Mod

My converter for rt4 batteries

I ONLY NEED THIS CONVERTER BECAUSE I HAVE 14.8V BATTERIES

IF YOU HAVE 12V BATTERIES THIS IS NOT NEEDED

Batteries all wired in

Custom battery Box Mod

Next, when the sealant is dry, You want to solder the output wires from the converter to the SP17 connector.

The SP17 connector pins are numbered I chose to wire everything on my kayak so PIN 1 IS POSITIVE, PIN 2 IS NEGATIVE.

This way there is no confusion when adding other things in later.

Solder your XT60 splitter wire to the converter input, making sure you get the connections the right way round.

Using other batteries and or no voltage converter.

It is the same process wire all batteries in PARALLEL to KEEP THE SAME VOLTAGE!!!

YOU ONLY WANT TO INCREASE THE AMPS PER HOUR or AH

Doing this with one large 12v battery wire straight to the SP17 connector.

If using more than one battery, I would recommend buying a splitter or a set of splitters.


This makes the build easier to connect and remove batteries as and when needed.

Custom battery Box Mod

XT60 splitter

12v Box Mod

Nice and easy build

Once everything has cooled down, Double check all wiring!!! Then check again!!!

Once you are happy everything is wired correctly, Tape up all soldered joints to make sure nothing shorts out.

RT4 batteries have a charge meter built in

Time to start cutting lots of strips of foam to pack everything in place. You do not want all your batteries banging around in the waves or the back of your car etc…

Batteries all packed in tight

Once you have carefully arranged your batteries and wires and packed them all in tight you are done.

Ready to go

Once finished, close the lid and grab a voltmeter and test your voltage and the polarity coming from your sp17 connector.

To confirm its correct before plugging into your fishfinder or external device.

All finished
Finished

You can use these basic instructions to make any size battery box for your kayak.

It’s the same principle from start to finish using whatever components meet your personal requirements.

Feel free to message with any questions about this build or anything else and we will try and help as best we can

Thanks…

Harley@proanglerkayak.fishing

Leave a Reply