Can I power an air conditioning system
via the inverter?
It is perfectly possible to power a small air
conditioning installation of, for instance, 4500-
6000 BTU via an inverter. While it is important to
remember not to leave the air conditioning running
for too long, cooling down a cabin before going to
sleep is fine as long as the battery bank and inverter
are correctly sized. Also remember to pay attention
to the start-up current, which can be up to eight or
twelve times higher than nominal capacity. A 6000
BTU air conditioning uses approximately 700 watts.
For a 230 V system this means a current consumption
of approximately 35 amperes. Cooling down a cabin
within two hours requires 70 Ah for a 24 V system
and 140 Ah for a 12 V system. It is important to make
sure that the inverter is large enough to provide
the starting current for the air conditioning, and the
battery also needs to be able to supply the required
capacity within two hours as well.
Can I cook with electric appliances using
Cooking is definitely possible with an inverter as long
as the battery set is reasonably large and the inverter
has a capacity of at least 2 kW. The preparation of a
complete meal will, in general, require the generator
to be activated or power to be plugged in. Switching
on the generator to heat up a cup of soup or cook a
steak or an egg is rather wasteful, since the generator
will not even warm up properly before it is turned
off again. This is bad for the generator and the
environment. Instead, we recommend that you power
only one or two of the hotplates via the inverter – a
snack can then still be prepared or heated without
needing to start the generator. After using the cooker,
recharge the battery fully via the battery charger or
Inverter selection table
Appliance can operate continuously if connected to inverter, battery capacity decides operation time.
Appliance or tool can operate for a reasonable amount of time (not continuously).
Use next model.
Mass Sine 800 W
Ultra 4000 W
NiCad battery charger
Fluorescent LED lights
Small kitchen appliances
Hairdryer (1000 W)
Small power tools
Washing machine 3 kg
Air conditioning/electric hob (limited)
Electric hob (complete / 3-phase)
(Mass Sine Ultra)
Turbine pump/electric motor (3-phase)
(Mass Sine Ultra)
Battery capacity 12 V/min.
Battery capacity 24 V/min.