Grand Design Reflection 312BHTS RV Solar Install Details

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Total Battery Capacity
800 ah
Total Solar
1200 watts
Victron Lynx Distributor

Victron Lynx Distributor

Victron Cerbo GX

Victron Cerbo GX

Victron Touch 50

Victron Touch 50

200w Rich Solar RV  Panel

200w Rich Solar RV Panel

Victron Smart Solar MPPT 150|70

Victron Smart Solar MPPT 150|70

Victron Multiplus II 12/3000

Victron Multiplus II 12/3000

Power to enjoy the outdoors in peace and quiet

RV Solar System Details

We reworked the front storage bay just a bit and managed to fit 800ah of lithium batteries, the Multiplus 3000, solar chargers etc.

Grand Design Reflection 312BHTS Victron Solar System Installation

Here is the end result, you'd hardly know there is enough power to run an air conditioner all night behind there using hidden storage space. Follow along to see how we did.

Grand Design Reflection 312BHTS Lithium Battery Install

We started by removing the pretty covers and found there was abundant storage space in the front cap just asking to be used.

More test fitting and securing. We used 3/4 inch thick ACX plywood for the base and bracing.

We removed the single 300w Jaboni Solar panel and MPPT charger and replaced it with 6x 200w Rich Solar panels for 1200w total. As you can see there is room for more. With our setup we ran these in a 3s2p configuration, the customer could over panel in the future for a 3s3p configuration for 1800w total. Not bad for still using the solar prewire.

The key to pushing all that power through solar prewire is getting the voltage up . With the 3s configuration we get to 135VOC (solar panel voltage) if we divide 1200w by the PVmax voltage of around 120v we get 10 amps of current. The 10awg wire is rated for 30 amps max, so we have some room to go yet still.