Replacing The Battery - SMA SUNNY ISLAND 4.4M Operating Manual

14 Cleaning and Maintenance
14.9

Replacing the Battery

Risk of burns due to flashes
Short-circuit currents in the battery can cause heat build-up and flashes.
• Remove watches, rings and other metal objects prior to carrying out any work on the battery.
• Use insulated tools for all work on the battery.
• Do not place tools or metal parts on the battery.
Danger to life due to incompatible lithium-ion battery
An incompatible lithium-ion battery can lead to a fire or an explosion. With incompatible lithium-ion batteries, it is not
ensured that battery management is intrinsically safe and will protect the battery.
• Ensure that the lithium-ion batteries are approved for use with the Sunny Island (see technical information "List of
Approved Batteries" at www.SMA-Solar.com).
• If no lithium-ion batteries approved for the inverter can be used, lead-acid batteries can be used.
• Verify that the battery complies with locally applicable standards and directives and is intrinsically safe.
Chemical burns and poisoning due to battery electrolyte
If handled inappropriately, battery electrolyte can cause irritation to the eyes, respiratory system and skin, and it can
be toxic. This may result in blindness or serious chemical burns.
• Protect the battery enclosure against destruction.
• Do not open or deform the battery.
• Do not throw batteries into fire. Batteries may explode in fire.
• Whenever working on the battery, wear suitable personal protective equipment such as rubber gloves, an
apron, rubber boots and goggles.
• Rinse acid splashes thoroughly for a long time with clear water, and consult a doctor.
• Install, operate, maintain and dispose of the battery according to the manufacturer's specifications.
Damage to the battery due to incorrect settings
The set battery parameters influence the charging behavior of the Sunny Island inverter. The battery can be
damaged by incorrect settings of the battery type, nominal voltage and capacity parameters.
• Ensure that the values recommended by the manufacturer are set for the battery (refer to the technical data of
the battery in the manufacturer documentation). Note that the battery charging behavior names used by
SMA Solar Technology AG and the battery manufacturer may, in some cases, differ in meaning (for the battery
charging behavior of the Sunny Island inverter, see technical information "List of Approved Batteries").
• Set the battery capacity for a ten-hour electric discharge (C10). The battery manufacturer specifies the battery
capacity in relation to discharge time.
140 SI44M-80H-12-BE-en-10
SMA Solar Technology AG
Operating Manual