Portable Use
Batteries and Connections
By using optional battery clips, the LD250 can be connected directly to a
vehicle battery. When using Alligator clips ensure they have a tight grip
around the battery post. Wherever possible battery connections should be
bolted. If connecting the LD250 through a cigarette lighter socket the
maximum power output of the LD250 will be
severely
restricted, this
practice should be avoided. Check with your supplier or installer if you are
unsure.
Batteries are the key to maximum performance from your LD250, if a
battery is too small or not fully charged it may result in de-rated
performance from your LD250.
Battery ratings
Batteries can be rated in one of two ways:
1.
CCA = Cold Cranking Ability. This is the amount of power or current that
a battery can deliver for a short period, typically a few seconds. This how
a car battery would normally be rated.
Do not use alligator clips in a moving vehicle
Auxiliary Battery
Earth (to chassis)
LD250 Inverter
Isolator
Vehicle
Alternator
2.
Ah = Ampere Hours. This is the maximum amount of energy that can be
stored in a battery; this figure will generally be stated at a particular hour
rate. This is how a deep cycle or storage battery would normally be rated.
Start Battery
Earth (to chassis)
By incorporating an auxiliary battery in the manner above, the starting battery
should remain charged for vehicle starting (see your auto electrician).
The LD250 has sufficient battery cable length to allow it to sit underneath the
vehicle whilst in use. If the ground is wet, place the LD250 on a waterproof
liner.
Selectronic Australia
LD250 Manual
4
100Ah @100hr, this means that when this battery is discharged over
a period of 100 hours, the battery has a capacity of 100Ah. This in
theory means 1 Amp for 100 hours, although this would in practice
result in a totally discharged battery that may not then recover.
To achieve maximum performance from your LD250 you must have a
battery capable of delivering 25 Amps for a short period whilst
maintaining at least 21.0 volts. To increase the capacity of your battery you
may need to join more than one battery together.
•
Where batteries are joined
in
series
, add the voltage of
each battery.
The capacity will equal the capacity of the smallest battery. 2 x 12
Volt 100 Ah batteries connected in series would have a total
capacity of 24 Volts – 100 Ah.
Selectronic Australia
LD250 Manual
3
