SolarMD Lithium batteries are becoming well known in solar powered installations these days. And with good reason.
Lithium batteries are indifferent to recharge decay. They can be partially recharged, fully recharged and subjected to temperatures of 60° Centigrade without adverse effects. They are also 3 x more energy dense than lead acid. AND they can be discharged 90% compared to 30—50% for lead-acid. They can be fully recycled without risk to the environment, lead-acid - not so simple.
TWICE the price but HALF the COST—REALLY?