Can anyone advise which is the best DC changeover switch to use and what is the app cost of one. I want to have a spare set of batteries charging separate to my existing set which I can changeover to when the initial set runs out.
Can anyone advise which is the best DC changeover switch to use and what is the app cost of one. I want to have a spare set of batteries charging separate to my existing set which I can changeover to when the initial set runs out.
" I'd always rather be on the golf course!! "
I don't know if DC but perhaps not easier to change over the charger ?
I don't know the setup so not sure but have a set of charge cables to pack A and then to pack B.
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For an alarm system or inverter?
Voltage : 12/24 or 48 VDC
Current rating : 7/18/ 55/105 or 160 amps ?
It's for 1kva inverter
1 set of batteries being charged by the inverter's battery charger. But if the batteries dont manage the 2.5 hour load shed then when the inverter alarms I can throw the change over switch to disconnect the one set and connect the other set already charged by a separate charger.
Thinking out loud...
Can you join it all and then parallel charge ? I.e have both chargers on. ?
I have done small research on parallel charging and seems ok.
That way enough charge capacity and then no need to change over ?
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I assume you have 2 x 100 amp/hr batteries to make 24 VDC and have 2 spare batteries you want to charge separate using a different charger or chargers.
Once you pass stage 4 load shedding or 3 or more days without power, the charge capacity of the inverter is like the alarm systems, not designed for SA load shedding, by the third day the batteries are dying because the cutout is 10.5 VDC and because the charge current will take at least 10 hours to recharge the batteries.
You have already started damaging the batteries after the first day it dropped to 10.5 VDC, that is 100% DOD. A couple months of loads shedding and the batteries because lead doorstops.
Back to the switch enquiry, you can either use a DC switch like the one used in boats or fit Anderson plugs plugs to each battery set
https://www.tradeinn.com/waveinn/en/...E&gclsrc=aw.ds
Hi Markthespark
Why connect another set of batteries only when the inverter alarm sounds ?
Why not leave all the batteries connected permanently ? That will double your operating time and halve the discharge rate of the batteries, thus increasing their lifespan.
The more batteries connected the less they discharge on each cycle, the longer they will last.
His inverter may have a cut off charge capacity of only maybe a 100ah and then it switches off. One has a certain time of charge which is which for 100ah.
Our complex has one like that and can not add more ah as it would not charge it.
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