So, let’s say I’ve got two batteries, for simplicity assume one for starting and one for accessories and want them to be (de)energized at the same time using a single switch (SPDT).
It took me a while to realize that the BP and SmartBP do not have the same wiring and behavior for their remote input signal… Anyway: am I correct that I could use the + from the starter battery to (immediately) switch the output of a standard BatteryProtect (connected to the ‘remote’ pin, with the BP in the starter circuit so to say) and use the same + from the starter battery to switch the output of a SmartBatteryProtect (connected to the ‘H’ pin, but with this SBP in the other circuit)?
The behavior that I would ideally have is to switch each circuit on/off, without any being dependent on the state of the other circuits’ battery and without having to find a solution on changing a custom SPDT ON/OFF-switch. But I do not think the remote inputs of BatteryProtects could be connected in parallel and ‘shorted’ by a switch to enable the output.
Any other suggestions/insights are of course welcome :-).
Is there someone who has information whether it is possible to either connect a singlepole normally open switch to simultaneously control two separate BatteryProtects (Smart and non-Smart) whose remote inputs are connected in parallel, or whether it is possible to wire the output of a normal BatteryProtect to the H-pin of the remote input while connected to a different battery (both same voltage, but different circuit) and have the ‘slave’ BP switch on/off immediately instead of a 90 second delay.
To make one of the proposed options a little bit more clearer, I have made the following diagram:
Must the H (and L) remote input on the SmartBatteryProtect need to be referenced from its own source? If not, as long as they share a common ground, which is the case in my diagram: can it even be 24V in a 12V situation and vice-versa as the BP is multivoltage?
Will this work to switch both loads more or less simultaneously (<3 seconds), also: will there be no adverse effects or damage to a BP in case one of the batteries or one of the grounds gets disconnected?
Like I wrote before: using a double pole switch is not really an option, but alternative methods to switch both BatteryProtects are possible (not being the addition of a relay).
(PS: if question better fits the DIY questions, please move topic)
