The solar business was rocked when lithium-ion solar batteries were introduced since the
solution provides several advantages over lead-acid batteries. Still, there are a few
Pros of Lithium Ion Solar Batteries
Some of the positive aspects of lithium-ion solar batteries include:
Higher Depth of Discharge (DoD)
A battery's DoD is the percentage of the battery's stored energy that has been consumed
relative to the overall capacity. To keep the battery healthy, most lithium batteries
come with a recommended depth of discharge.
Lithium-ion solar batteries are deep cycle batteries with DoDs
of about 95%. The DoD of most lead-acid batteries is only 50%. This means you
can get more out of a lithium-ion battery's stored energy without needing to recharge it
Lithium-ion batteries have a greater
round-trip efficiency than other kinds of solar batteries. Efficiency is
essentially the quantity of useful energy you get from your battery versus the amount of
energy needed for storage. Lithium-ion batteries have efficiencies ranging from 90% to
One of those lithium benefits that you can't set a figure on is not constantly worrying
about routine maintenance. Unlike flooded lead-acid batteries, lithium-ion solar
Unlike flooded lead-acid batteries, which must have their water levels monitored,
lithium-ion batteries don't need to be watered. This reduces the amount of maintenance
required to keep the batteries working, as well as the requirement to train new
employees on the maintenance procedure.
Lithium-ion batteries last
long since they have a greater DoD and don't have to be charged and recharged as
Many lithium-ion solar batteries last up to 10 years or 10,000 cycles. The lifespan of
lead-acid batteries, however, is only about 5 years.
Higher Energy Density
A battery's energy density refers to how much energy it can store in relation to its
physical size. Lithium-ion batteries can
hold more power while taking up less space than lead-acid batteries. This is
ideal for households with limited space.
The self-discharge rate of many rechargeable batteries is often a problem. The
self-discharge rate of lithium-ion cells is substantially
lower than that of other rechargeable cells such as Ni-Cad and NiMH. It is
generally around 5% for the first four hours after charging but drops to about 1% or 2%
per month thereafter.
No need for Priming
Some rechargeable batteries need to be primed before they may be used for the first time.
One of the advantages of lithium-ion batteries is that they are delivered
fully functional and ready to use.
Variety of Types
Lithium-ion cells come in a variety
of shapes and sizes. This benefit of lithium-ion batteries means that the
appropriate technology can be used for the purpose at hand. Some lithium-ion batteries
have a high current density, making them excellent for consumer electrical devices.
Others may deliver even larger currents, making them perfect for power equipment and
Cons of Lithium-Ion Solar Batteries
Lithium-ion batteries' disadvantages include:
When contrasted with lead-acid batteries, lithium batteries are the
most pricey battery alternative.
The great news is that solar batteries are eligible for rebates such as the federal
tax credit, which help to lower their cost. Furthermore, while lead-acid
batteries are less expensive, they must be replaced more frequently than more durable
Battery Management System Required
Lithium-ion batteries and cells must
be safeguarded against being overcharged and discharged too far. Furthermore,
the current must be kept below safe limits. As a result, one downside of lithium-ion
batteries is that they require protection circuitry to guarantee that they remain within
their acceptable operating limits.
Fortunately, modern integrated circuit technology allows this to be easily implemented
into the battery or, if the battery is not interchangeable, into the equipment.The battery management circuitry
is integrated, allowing li-ion batteries to be used without any special
knowledge. They can be left on charge until the battery is fully charged, at which point
the charger will cut the power supply off.