Page 16 - PS Battery Guide May 18

Battery guide For PowerSpout

Nano-Carbon (often called advance lead)
Highly respected battery companies like Yuasa
have in the last few years launched Nano-
Carbon battery technology.

Click here for web site article

Adding carbon to the negative electrodes of a battery decreases the degree of
sulfation, the technique involves blending carbon additives into the lead sulfate
paste that makes up the negative electrodes.
Nano-Carbons are about the same cost of the highest performance sealed lead
batteries but about 2 x the cost of FLA. In 30% DOD applications you can achieve
40% more cycles. In 70% DOD applications you can see a 250% improvement in
life.

Nano-Carbon may be a good solution is high cycle applications.
Well designed off-grid power systems (solar PV and hydro) with good energy
efficiency measures can normally keep battery cycling to within 20-30% DOD
using lower cost FLA batteries. Nano-carbon are better suited to grid-tied solar
PV homes that store surplus excess power for night time use. These tend to be
small batteries and highly cycled each day.

Lithium batteries
These have been common for some time in phones, laptops, power tools and
electric cars but have only recently started to become available for domestic
household energy storage systems. When compared with lead acid of the same
nominal capacity, the price is much higher. But Lithium batteries have numerous
advantages that could ultimately win out, especially as costs come down with
mass production.

© 2018 EcoInnovation Ltd (NZ) Page 16
Last reviewed 19/6/18