Solar cells use at night or times required for the solar panel does not produce as much power to provide energy. They are typically used for off-grid systems and network systems or critical load or frequent power cuts. Because they do add a lot of cost to the system, most grid-connected customers will not need a spare battery.
Historically, energy storage battery for solar power generation system is the only type of lead-acid batteries. However, lithium-ion battery technology is becoming a larger storage alternatives. Both types of batteries are able to enter the "thermal runaway", wherein the cell is heated rapidly and can emit a flame, the electrolyte and dangerous fumes. However, the possibility of occurrence of an event, and is therefore higher for a lithium ion, because it has a higher volume energy smaller, you can see more at : http://www.omnik-solar.com/products/omnik_solar_inverter .
Lead-acid battery technology has existed for over 100 years. Lead-acid batteries are still used in most vehicles; therefore, progress is being made in these cell efficiency and lifetime.
Significantly cheaper than lead-acid batteries, lithium-ion batteries. The difference is not small battery, and for the people of these items may not notice a significant cost difference is obvious. However, since the solar cell is so much larger, the cost difference is significant.
Lead-acid batteries can be recycled at the end of its service life, while the lithium-ion battery may end in landfill, because there is no established system for the recovery of large lithium-ion battery.
Lithium-ion batteries are considered advanced battery technology. The cells in the battery can be fully charged and discharged increases efficiency. Lithium ion batteries are the most commonly used mobile phones and laptops.
Lithium ion batteries are smaller, lighter in weight for the same amount of energy. Lithium-ion batteries have at least two years longer than the average calendar life of lead-acid. Lithium-ion batteries do not require regular maintenance. However, the new generation of lead-acid batteries do not require regular maintenance extra.
Lithium-ion batteries, including the composition of a highly reactive materials, and lead-acid, lithium-ion battery that can be almost completely discharged without loss of function, so you can use a smaller capacity compared with lead-acid batteries. In addition, lithium-ion batteries typically have a longer cycle life, although this varies between solar pv manufacturers .
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