damaging the battery.
for a non-stop maintaining experience.
like car vacuums and air compressors.
battery get away
and batteries that cannot hold voltage.
battery performance for stronger engine starts and extended battery life.
battery as low as 0.3 volts.
the current/voltage of the battery and
AGM | 12V Lithium | 12V
Repair | 12V Loading（Force) | 12V Supply
Battery | Over Voltage |
Safety & Quality
Sigma battery chargers will automatically remember the last selected mode after a power outage and return to this mode in next use. This memory function covers 6V, 6V AGM, 12V, 12V AGM, and 12V lithium modes, 12V repair and 12V loading modes are not included.
With a 9-step charging process, HULKMAN Sigma 10 battery charger can safely maintain a battery for a long period, even all year round. But it's not recommended to leave the charger unattended.
With HULKMAN Charging Technology, Sigma battery chargers will optimize the battery performance to some extent, which depends on aging and damage degree of batteries.
In "12V, 12V AGM, 12V Lithium, 6V, 6V AGM, 12V Loading" mode, this icon Indicates the connected battery level. The four bars from bottom to top indicate battery levels from 25% to 100%. In "12V Repair" mode, these four bars from bottom to top indicate a repair time of 1h to 4h. Flashing bars change to constant bars when the most recent stage is completed.