Xantrex Technology 815-2524-02 Manuale Utente

975-0697-01-01

55

Battery Information

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As your power requirements increase, you may need to use more 
than one battery to obtain sufficient capacity. Batteries can be 
connected in parallel, in series, or in series-parallel to create higher 
capacity systems. 

See “Battery Cabling and Hook-up Configurations” on page 57 for 
more information about battery inter-connection schemes.

Batteries connected in parallel should be of the 

same type and amp-hour rating and from the same manufacturer.

It is not recommended to connect batteries of different types, amp-
hour ratings or manufacturers. Improper charging and decreased 
battery life will result. 

The following worksheet is a guide to help you determine your 
battery needs. Be generous in estimating the time for which you will 
run each of the loads to ensure sufficient battery capacity.

An appliance may require three to six times its normal running 
current in order to start. The Freedom SW 3524-230 can handle 
surges to 6800  watts for five seconds, which translates to a locked-
rotor-amp rating of no more than 50 amps. The locked rotor amp 
may be specified on the motor nameplate as “LRA” or “LRI”. 

When considering appliances with large motors, follow these 
guidelines:

•

Make sure that the motor’s LRA rating is no more than 50 
amps. The Freedom SW 230V may not be able to start a motor 
with a higher LRA, and the Freedom SW 230V will shut down 
if the attempt is made.

•

Make sure the battery bank, DC cables and DC fuses are 
capable of handling up to 600 amps DC for five seconds. A 
weaker circuit may not be able to provide sufficient power to 
the Freedom SW 230V to allow the Freedom SW 230V to start 
up the appliance. Again, if the circuit cannot deliver the 
required current, the system may shut down or the fuse may 
open.

Freedom SW 3K2K 230V InvChg Install Guide.book  Page 55  Friday, June 20, 2014  9:11 AM