Technical FAQs 4

What voltage is a solar battery?

Solar batteries are typically 12V, 24V, or 48V, with a fully charged 12V battery reading between 12.6V and 12.8V. Voltage readings below 12.4V for a 12V battery indicate a partially discharged state that may require recharging.

What happens when a battery is discharged?

Among the discharge phenomena so far overlooked is the voltage recovery effect of batteries (a.k.a. voltage rebound/relaxation), where battery power appears to spontaneously surge, even after readings of full discharge in a circuit.

What happens if a battery is used too much solar power?

Excess solar power will also be used for battery charging. Sustain mode is exited when solar-charging has been able to raise the battery voltage 0.1 V above the sustain-voltage-level. Normal operation will then continue - with the battery providing power when insufficient energy is harvested from the PV array.

How much power does a solar charger use?

The charger will ensure that voltage level is maintained - using power from the grid when necessary. The maximum charge current it uses for this is 5 Ampére per unit. (5 A applies to all installations - regardless of system voltages (12 / 24 / 48 V). Excess solar power will also be used for battery charging.

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