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Thread: Battery Back Up

  1. #11
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    Thank You for all your input everyone! PorpoiseHork - do you have a link to what you purchased from FJW?

  2. #12
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    Thank you everyone for all the replies. Porpoise Hork, what is the name of the back up you are using?

  3. #13
    BOD MEMBER PorpoiseHork's Avatar
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    There isn't a link to it at FJW's but it's the exact same one that I linked for Reef Breeders. They run 119 and he has a huge stack of them. They are just inside the door on the left behind the banner sign next to the very first case. You will want to plug it in and charge it up prior to use. Mine only took about an hour to recharge.

    https://www.reefbreeders.com/shop/je...ttery-back-up/
    Bret
    M.A.R.S.H. - Board Member
    Marine Aquarium and Reef Society of Houston

  4. #14
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    Quote Originally Posted by PorpoiseHork View Post
    It depends on the size of the tank. For smaller tanks this usually works fairly well in conjunction with daily small water changes. For larger tanks however you would need multiple air pumps to get enough water movement and in the tank and to break the surface tension for gas exchange. If you run DC wavemaker pumps a backup battery like the IceCap or similar for the Jebao's will successfully operate a small powerhead for upwards of 48 hours before needing a recharge. Connecting say a Jebao PP-4 wave maker to it and point it up to the surface on pulse will definitely do the trick.

    I picked one of these little battery packs up from FJW on Monday and opened it up to see what all is inside. It's literally a small 12v sealed battery and a small circuit board that allows you to connect two 12/24v DC pumps to it. In the event of a power outage it will provide power to the devices connected with no loss of power until the battery drains. The simplicity of this battery unit is unlike computer UPS units there is not a voltage inverter so nearly the entire battery capacity can be used on the pumps connected instead of having to power the electronics and inverter on top of the devices connected to it. Also because this battery system is so simple you can modify it with a much higher capacity 12v battery to it and increase it's run time significantly. Once I get the second battery for it I'll post up a how to on setting it up as well as modding it for the additional battery capacity. My goal with doing this is to provide sustained power to the main return pump as well as a single wavemaker for at least 48 hours before I would have to resort to using a generator.
    We can't buy whatever better equipment to run more than what the fishes need during several hours out of power. I think the most important to keep the fish alive is AIR and of course, we need to buy more if the tank bigger.
    For 40g tank in this thread, I think 1 or 2 backup air pump is enough for what the tank need for several hours. If you need to run wavemaker and other things then the generator is the best.

  5. #15
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    This is just my 2cents opinion.

    Between Jebao Battery Back-up $114.99 and PowerPro 2-Stroke Generator, 1000W $115.99 I will pick generator if I need to speed that much money.

    https://www.walmart.com/ip/PowerPro-...&wl13=&veh=sem

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  7. #16
    Supporting Member ATXacrofarmer's Avatar
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    Quote Originally Posted by tthouston View Post
    This is just my 2cents opinion.

    Between Jebao Battery Back-up $114.99 and PowerPro 2-Stroke Generator, 1000W $115.99 I will pick generator if I need to speed that much money.

    https://www.walmart.com/ip/PowerPro-...&wl13=&veh=sem
    He mentioned living in an apartment and them not allowing generators I believe. Otherwise, I'd lean towards the generator too.

  8. #17
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    Oh, I forgot he said that.

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  10. #18
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    Correct - I live on the second floor and I tried to explain my situation. They said no to the generator (even a small one). However, they did say if I wanted I could go ahead and put a larger tank in up to 150 gallons. All this after I finally get the 40 gallon up and going.

  11. #19
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    On the generator subject two things that are very important for the life of your equipment and your generator. First of all NEVER run any generator more than 80% of it's running watt rating. That little guy says 1000 watts but the running watts are actually 900. That means 80% of it is only 720 watts. Check to see how many watts your system is running....yeah you could turn off some of the lights and only run the heater periodically but try to stay under. What happens if you go over? Depends on the generator. If it even will go over 80% most are not designed to do it for more than a few seconds to a minute. Think of the power drain on a power saw...it pulls it's max rating at startup and then settles back to use less power. That is why generators are rated like they are. Well many cheap generators SAY they will run X number of watts and just get nowhere close to that number. I have a cheap Harbor Freight 3500 watt genny that will barely push 2500 watts before it dies. But it will run power tools and works great out on the farm...and since it was $200 it is hard to get too mad. However, my Yamaha says 2900 and it will do 2900 before it overloads and shuts down. I use this in emergencies and based on my apex will easily run the tank and my refrig if the heaters done kick in while the refrig is running. The Yamaha lists for $1500 but you would be surprised how many used gennys are in the Gulf coast area! Keep those running watts below 80% and the generator will last a very long time.

    The other important thing is you CANNOT run sensitive equipment with a cheap non-inverter type generator. I cannot stress this enough. Lost a refrigerator during Ike to a non-inverter Generac genny and no way in hell I will hook up my Apex to one. The inverter cleans up the power so you can charge a phone or laptop or an Apex. You could use the old style to run a battery charger and then run off battery but there is some loss there as well. By the way I LOVED that Generac 4000 generator...was a real workhorse and started on the first pull as long as it didn't sit too long between uses.

    Sorry to get off topic. I could talk for a while about old gas...the crappy ethanol in our fuels...running the genny out of gas....
    Last edited by RobertP; 5 Days Ago at 01:53 PM.

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  13. #20
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    On the topic of batteries...if you are the DIY type there are bunch of people building battery packs with 18650 batteries. This is kind of mimicing the Tesla powerwall and is the same battery types. Of course the crude ones I have seen on youtube you would not want anywhere near water!!!!


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