Lithium solar batteries 

They have a load capacity much faster, which allows to autonomously exploit the slightest ray of sun without being limited by the internal resistance of the battery. A lead battery, depending on its capacity will be limited in charging power. With lithium, you will charge with the maximum of what the controller can give.
Unbeatable also during the discharge, they easily support very fast discharges. Comparing the price at the amp hour available (it is available with the lithium discharge depth very important) we see that the price at Ah available is just a little bit more expensive than lead batteries


More power for less weight), the Lithium Battery offers high charge and discharge currents and a lifespan up to 6 times higher than that of a conventional battery.