cjackg
Solar Newcomer
Posts: 17
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Post by cjackg on Sept 2, 2019 23:13:17 GMT
I am currently installing a (mostly) Renogy system in my garage and have 3 new (costly) Renogy AGM 100ah batteries.
As I look at the specs for my Renogy Rover 30a controller and my Renogy 1k Inverter, I am concerned about limiting potential damage to my new batteries.
I have always heard that pulling down batteries much below 12.0 volts for any period could seriously reduce the life or even ruin them.
The Renogy 30a Rover Controller has an Over Discharge Voltage of 11.1 volts, and a Discharge Limit Voltage of 10.6 volts.
The Renogy Inverter has stated shutdown when battery volts drop to less than 10.v and input less than 10.5v...
These specs sound like they could expose my new AGM batteries to a high risk if the battery level drops due to more load and less sun than expected...
I am new to all this but sure would like to hear some serious input before I proceed more...
Jack (Tennessee)
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Post by mediadogg on Sept 2, 2019 23:36:44 GMT
This is an item that I use for my large battery (200AH). And this one is much more versatile, but only rated for under 20A loads. And Victron makes what seems to be high-end designs. (I have not used this particular one myself)
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cjackg
Solar Newcomer
Posts: 17
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Post by cjackg on Sept 2, 2019 23:48:37 GMT
This is an item that I use for my large battery (200AH). And this one is much more versatile, but only rated for under 20A loads. And Victron makes what seems to be high-end designs. (I have not used this particular one myself) Interesting options I will definitely consider. I was hoping some Renogy techs would show up and reassure me I didn't have to worry... I also have the new Renogy Monitor panel about to install but not sure it will do much to alleviate risk to the batteries. Jack |
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Post by mediadogg on Sept 2, 2019 23:54:30 GMT
This is an item that I use for my large battery (200AH). And this one is much more versatile, but only rated for under 20A loads. And Victron makes what seems to be high-end designs. (I have not used this particular one myself) Interesting options I will definitely consider. I was hoping some Renogy techs would show up and reassure me I didn't have to worry... I also have the new Renogy Monitor panel about to install but not sure it will do much to alleviate risk to the batteries. Jack Well you only need to worry if you don't do it. You can corroborate what you "have always heard" by doing a Google search. |
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Post by tattoo on Sept 3, 2019 0:40:58 GMT
My question to you is what will be the draw on your system?
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Post by bupkis on Sept 3, 2019 1:05:46 GMT
cjackg, the cut off of the controller do not have anything to do with an inverter connected to a battery.
One of the pit falls of inverter use unless you add something to cut things off at a voltage you are comfortable with.
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cjackg
Solar Newcomer
Posts: 17
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Post by cjackg on Sept 3, 2019 23:07:04 GMT
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Post by mediadogg on Sept 4, 2019 2:15:52 GMT
Whoa, definitely high class. Out of my league.  |
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Post by tattoo on Sept 4, 2019 2:45:59 GMT
Whoa, definitely high class. Out of my league. I agree...... I guess it's not for use in an off grid system? |
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Post by bupkis on Sept 4, 2019 12:57:37 GMT
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cjackg
Solar Newcomer
Posts: 17
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Post by cjackg on Sept 4, 2019 13:43:52 GMT
Whoa, definitely high class. Out of my league. I agree...... I guess it's not for use in an off grid system? Should be fine off-grid and with a bank of batteries, as long as the load is within the 65a rating. Nice that it comes already enclosed, and with a manual switch plus option for an alarm. It has selectable fixed voltage disconnect ranges but they appear adequate. Guess I will find out how well it does as I ordered one. Got it from Hodges Marine for $5 less than Amazon price... |
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Post by tattoo on Sept 4, 2019 15:09:15 GMT
Should be fine off-grid and with a bank of batteries, as long as the load is within the 65a rating. Nice that it comes already enclosed, and with a manual switch plus option for an alarm. Since I don't want anything cutting off my fridge I won't be buying one....... I can't say I've ever seen my batteries lower than 11.9 even after a week of rain and clouds......
So I guess the moral of this story is have a large enough system so you don't have to worry about it........
Plus you could always use the money your going to spend on that gadget and upgrade your system so you won't need it? What ya think?
Yea I know I'm cheap.......
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Post by mediadogg on Sept 4, 2019 15:47:46 GMT
Should be fine off-grid and with a bank of batteries, as long as the load is within the 65a rating. Nice that it comes already enclosed, and with a manual switch plus option for an alarm. Since I don't want anything cutting off my fridge I won't be buying one....... I can't say I've ever seen my batteries lower than 11.9 even after a week of rain and clouds......
So I guess the moral of this story is have a large enough system so you don't have to worry about it........
Plus you could always use the money your going to spend on that gadget and upgrade your system so you won't need it? What ya think?
Yea I know I'm cheap.......
But you don't have to buy that expensive one. It is designed for harsh marine environments. The little $10 - $20 gadgets I buy work great, but they are meant only for "DIY" kinds of installations - dry and protected from the weather, heat, etc. But so far, they are doing the job. Especially the one that can be programmed in 0.1V increments. If you are worried about your refrigerator, then my point would be that if the battery is depleted, the fridge isn't gonna run anyway, so you might as well protect the battery. And if you don't open the fridge, the food will be just fine for several hours while you recharge the battery or wait for the sun to come back up!!  |
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Post by tattoo on Sept 4, 2019 16:35:47 GMT
If you are worried about your refrigerator, then my point would be that if the battery is depleted, the fridge isn't gonna run anyway, so you might as well protect the battery. And if you don't open the fridge, the food will be just fine for several hours while you recharge the battery or wait for the sun to come back up!! Nope not worried about it at all, I was just voicing an opinion........ Hell I don't think about it but once a week if that much...... And I know way better than you do what my GE monitor top is capable of.......
Like I said my batteries have never been below 11.9 even after a week of clouds and rain, can you say the same? Oh yea I forget you still have AC power back up..... No need answering that........ LOL
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Post by bupkis on Sept 4, 2019 20:31:19 GMT
Guess I will find out how well it does as I ordered one. Got it from Hodges Marine for $5 less than Amazon price... Let us know how it works out, Blue Sea usually has quality products. |
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