Everything You Need To Add 415w Of Solar To Your 12v set up

Updated: Jun 1, 2021

Hi everybody, we're back with another quick but hopefully helpful post

If you have a leisure battery with no built in way to keep it charged you might have noticed that they don't last for long. One of the easiest, cleanest, simplest and most probably cheapest solutions to this is adding solar panels and a charge controller to your set up.

This isn't a one stop solution to all of your recharging needs as they do have limitations. They are not great on cloudy days, can't charge your batteries at night and in winter they are less effective however for the majority of the time they are an awesome way to keep your batteries topped up.

For the winter I would think about installing a B2B charger for vehicles or a 600w wind turbine for non mobile applications. For more info in these option please check out the posts below.


This all depends on the time of year but roughly in the summer it will top your battery up by 224 ah however in the winter it would only top your batteries up by 34 ah that is a huge difference

This would be a perfect size solar set up for somebody with either 4 X 100ah or 4 X 110ah batteries. For any larger this set up will help but not fully recharge your battery even in the summer.

To add this set up to your 12v system it is pretty simple and you will only need a few extra bits and pieces, all are listed below.

The first thing you will need is a 415W solar panel. As an amazon associate I earn from qualifying purchases

415W LG BiFacial Solar Panel up to 540W - Mono Neon2 BiFacial - New A grade - up


Next you will need a solar charge controller. As it is a 415w solar panel but can accomplish up to 540w in the right conditions and if mounted correctly for this set up we are going to suggest a 50 amps MPPT controller.

EPEVER MPPT Solar Charge Controller 50A Negative Ground 150V PV Solar Panel Charger with MT50 Remote Meter Temperature Sensor


To connect your solar panel to your charge controller you will need some solar cable and a 30 amp inline fuse.

Ficocean 1Pair MC4 Solar Panel Inline Fuse, 30A


BTSKY Pair Of 10AWG Solar Extension Cable with MC4 Female and Male Connector for Solar Panel Connectors, Solar Panel Adaptor Kit Tool (3M/10Feet)


The next thing you will need is some cable and an inline fuse to attach your battery to your solar charge controller. For this I use these.

TUOFENG 12 Gauge Wire,Electrical Wire,12 AWG Silicone Wire Hook Up Wire Cable 6 m [3 m Black and 3 m Red]


RKURCK 12V-24V DC 30 Amp Circuit Breaker, Fuse Holder, Inline Fuse Block For Car Audio Solar Inverter System Protection (30A)


and the last thing you will need is sum lugs to connect your cables to your battery terminals

electrapick 60PCS Bolt Hole Tinned Copper Terminals Set-Wire terminals Connector Cable lugs


So that is all you will need to get the solar working and your batteries charging but here are a few things you might find helpful.

7 Piece Solar Panel Mounting Bracket White Rectangle Set Kit Adhesive Bond For Caravans, Motorhomes, Boats & Any Flat Surface


Renogy Solar Panel 4 Pieces of Z Holder for Mounting Solar Panel Roof Mount Z Bracket with Nuts and Screws for Motorhome, Boat, Roof, Wall and Other Off-Gird Roof Installation


Offgridtec 006415 Roof Duct Dual Black For Motor Home Caravan Boat Solar Cable Duct


Solar Panel Brackets Black ABS Solar Panel Mounting Brackets 7 Drill-Free Corner Bracket Support Kit for Wood Frame RV Boat Campers Caravans Hood (Corner Bracket,Side Bracket,Cable Entry Gland)


Lowenergie Adjustable Angle Solar Panel Mounting Brackets Frame Shed Caravan Boat or Ground Mount


Renogy Solar Panel Bracket Pole Mount


Renogy® 5 Pair MC4 Male/Female Solar Panel PV Cable Connectors Double Seal Rings for Better Waterproof Effect


Ok so thats about it from us for now, we hope you all enjoyed it and found it useful




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