Fixed, valve-regulated, sealed, nominal capacity AH.
GFM means fixed valve-regulated maintenance-free lead-acid battery. In fact, GFM and FM series is mainly the name of the difference, both are valve-regulated maintenance-free lead-acid batteries, except that GFM is in the valve-regulated maintenance-free lead-acid batteries on the basis of fixed only. For example, the battery GFM500.
The first letter "G" indicates that the battery is stationary. The second letter "F" indicates that the battery is valve-regulated. The third letter "M'' indicates that the sealed anti-acid mist type. The number 500 indicates the capacity of the battery, unit AH, i.e. fixed installation valve-regulated sealed acid mist-proof battery.
Expanded InformationThe role of the battery
When the engine is started, it supplies power to the starter motor, ignition system and other major electrical equipment.
When the engine is not running or running at low speed, the battery supplies power to various electric devices.
When there are too many electric devices and the power consumption exceeds the generator's power supply capacity, the battery assists the generator to supply power to various electric devices.
Stabilizing voltage. The battery is equivalent to a large capacitor, can absorb the instantaneous over-voltage in the circuit to protect the power equipment.