can you bypass or turn off the low battery cut off on the spring controllers?
not got my split relay set up yet and worried the controller could shut down because of low spare battery power i have just for the water system while im out on a job!
Hi depending on which version of the control you can over ride the low battery shut sown. If you have a V11 (available since October 2012) Then you can deactivate the low battery via the main menu
http://www.youtube.com/watch?v=3u2-5R66GcA&feature=youtu.beThe V11 will warn at 11v and shut down at 10.5v
If you have an older V9 version then you can not over ride the low battery shut down. The V9 will warn at 11.5v and shut down at 11v.
As a general rule battery manufactures suggest a battery should not be drained lower than 50% of its amps capacity this is because of damage to the cells which mean the battery will not hold a charge as well.
How fast you will use 30 amps (50% of your battery capacity) does depend on how high your flow settings are. If you control is set around 60 to 80 you are using 3 - 4 amps an hour which likely will give you 6 - 7 hours work. It is worth bearing in mind battery condition and cable condition can have an impact on this working time as can the efficiency of the pump motor.
This link explains the process well.
http://www.progressivedyn.com/battery_basics.htmlYou may also be seeing volt drop along the cable length. Keep cables between the battery - control and pump as short as possible replace any damaged/worn connectors or cable.
Volt drop link.
http://www.springltd.co/node/133