Cleaning the batteries with a wet cloth. Do not worry, there is
no electrical danger by 48 V DC !

Checking the density of the electrolyte with an hydrometer.

The "1000 Kwh" figure can be seen on the blue display.

The weather and the roses were beautiful in May.

The charger is ready for mounting against the wall.

Panel installation has begun by a dull autumn day.

Panel installation in rapid progress.

My elder son gives a hand during battery installation. 
Each battery weighs 65 Kg (approx. 140 lb).

The 8 batteries are interconnected by the means of
heavy gauge copper bars insulated with colored
thermal sleeves. The gauge of the black cable on
the left  is 95 mm².

Some tiles need to be adjusted to fit the big stainless 
steel hooks that secure the rails to the wood frame.

Rail mounting will son be finished.

The battery box. It will be equipped with a liner
to protect the floor in case of a battery leakage.

A 200 Amp fuse, an heavy duty switch and heavy 
gauge cables are necessary to avoid losses.

The toughest part of the project: to mount the modules on my old house's uneven roof.

A lot of rails have to be secured to the roof before one can mount the panels.

The pallet containing the 16 modules looks great.

The 16 modules are capable of delivering 270 Watts each.

During these tests I could evaluate the future
yield of the system.

The batteries are "draft" wired.