A dumb question, but to make 24v out of the 2 12v batteries, are the wired negative to positive?
Yes
Wired in series doubles the voltage and capacity stays the same
Wired in parallel voltage stays the same and capacity doubles
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A dumb question, but to make 24v out of the 2 12v batteries, are the wired negative to positive?
not a dumb question at all. there are 2 ways to wire batteries.A dumb question, but to make 24v out of the 2 12v batteries, are the wired negative to positive?
I have not yet. I will update as soon as I do.@Reef Box — did you ever test the dc return pump using your battery backup?
thinking the ideal backup solution would be powering dc returns instead of simply pushing water in the display with power heads
These are the two adapters to give a perfect fit at both ends. They're out of stock now, but you can try searching other places to find them. If my tank ever shows up, I'll be testing the Tunze setup on a Varios 4 return pump.Thank you for clarifying this ☺ Did anyone find a converted connecter to make it easier to connect into the Tunze Safety Connector?
I currently have a deep cycle 12v marine battery with two Tunze Safety Connectors to run two Tunze powerheads as a back up in case of a power outage. I'd really like to switch over to a couple Nero 5s but don't want to have to switch over all of my Battery Backup too. Does anyone have any legitimate thoughts on whether I can run the Nero 5 powerheads off of the set up that I already have?
This is the one I use. Works great. It’s $105 on Amazon.That charger is out of stock, maybe even discontinued. They only list 25a 500 dollar chargers and up for 24v.
Is there a recommend alternative that anyone has?
I have a generator but that doesn't help me when I'm not home like just happened today.
I'm also thinking of a 10ah battery for my Nero 3, that should give me a day or two.
Oh I didn't even think to check that brand. I use some of their stuff for cars. Their normal battery tender was a life saver during lockdown since my car wouldn't move for weeks on end.This is the one I use. Works great. It’s $105 on Amazon.
Battery Tender® 12V/24V, 5 AMP / 2.5 AMP Selectable Chemistry Weather Resistant Battery Charger
Looking for an on board option? This 5 AMP industrial charger is constructed with a heavy duty cast aluminum casing that is shock and vibration resistant. Easy to install and mountable. Check out our AC Power Port (P/N 024-0004-BK) for easy routine charging.12V @ 5 AMP & 24V @ 2.5 AMPWeather...www.batterytender.com
Your install is so clean it’s almost obnoxiousQuick update for anyone looking into this thread.
I did pick up a second battery and a 24v battery charger/tender. Just got everything hooked up and working. No issues function wise. The plugs from the factory Nero power supply do fit in the tunze safety connectors but it does take a bit of muscle. At no point did I feel like anything was going to break, I just had to work it in a bit. The Tunze connectors fit right into the Nero controller without issue. I am running 2x 12v 100AH Sealed Lead Acid batteries wired together for 24v total output. I am planning to turn them off this weekend and see how long they will run without power.
The following is a list of the parts that I used (there are a lot of options some cheaper) this is only what I personally chose after looking into specs, reviews etc.
Battery x2: Mighty Max Battery 12V 100AH Battery for Solar Wind DEEP Cycle VRLA 12V 24V 48V Brand Product
Charger/Tender: NOCO Genius G15000 12V/24V 15 Amp Pro-Series Battery Charger and Maintainer
Voltage Monitor (optional): bayite DC 6.5-100V 0-100A LCD Display Digital Current Voltage Power Energy Meter Multimeter Ammeter Voltmeter with 100A Current Shunt
Tunze Safety connector x2: Tunze USA 6105.500 Safety Connector for Battery/Solar Backup of Turbelle and Stream Electronic Pumps
Whole setup cost me about $450 (plus some time wiring it up) but like I said before, I have $1000s in fish and corals and this will probably run pumps for several days without outside power depending on the actual settings, I can always turn them up a little once the power actually goes out to keep the water really moving. If it saves most of the life in my tank it'll still be cheap insurance. Also, there ARE cheaper options, I chose not to go the cheaper route.
How is the setup holding up? I plan to do the same with 2x Nero 5s.Quick update for anyone looking into this thread.
I did pick up a second battery and a 24v battery charger/tender. Just got everything hooked up and working. No issues function wise. The plugs from the factory Nero power supply do fit in the tunze safety connectors but it does take a bit of muscle. At no point did I feel like anything was going to break, I just had to work it in a bit. The Tunze connectors fit right into the Nero controller without issue. I am running 2x 12v 100AH Sealed Lead Acid batteries wired together for 24v total output. I am planning to turn them off this weekend and see how long they will run without power.
The following is a list of the parts that I used (there are a lot of options some cheaper) this is only what I personally chose after looking into specs, reviews etc.
Battery x2: Mighty Max Battery 12V 100AH Battery for Solar Wind DEEP Cycle VRLA 12V 24V 48V Brand Product
Charger/Tender: NOCO Genius G15000 12V/24V 15 Amp Pro-Series Battery Charger and Maintainer
Voltage Monitor (optional): bayite DC 6.5-100V 0-100A LCD Display Digital Current Voltage Power Energy Meter Multimeter Ammeter Voltmeter with 100A Current Shunt
Tunze Safety connector x2: Tunze USA 6105.500 Safety Connector for Battery/Solar Backup of Turbelle and Stream Electronic Pumps
Whole setup cost me about $450 (plus some time wiring it up) but like I said before, I have $1000s in fish and corals and this will probably run pumps for several days without outside power depending on the actual settings, I can always turn them up a little once the power actually goes out to keep the water really moving. If it saves most of the life in my tank it'll still be cheap insurance. Also, there ARE cheaper options, I chose not to go the cheaper route.