Home › Forums › Panel Meter Support › SIN9020S Get Battery Level Reading Accurate How?
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Tom
January 6, 2020 at 4:05 amPost count: 0Hi, I bought a SIN9020S DC Bidirectional Digital Multimeter / battery monitor and am using with a 20AH Lithium battery (LiFePO4) and from what I’ve noticed the meter always reports the battery level full until moments before it dies. Is there a way to fix this?
Also curious if anyone knows an approximate amount of power this meter uses + if that use level is calculated into the reported AH used value. Currently annoyed my 20AH battery seems to get about 15AH as this meter reports before it dies.
Thanks
Tom
January 6, 2020 at 4:09 amPost count: 0Also tempted for a next round test on my battery undoing this monitor and using just my solar charge controller to monitor usage with all used devices just connected to the “load” terminals on the controller.
Right now I connected this monitor as the manual indicated like for instance with the Out- terminal the only cable going to the battery – terminal. I wondered though if it might be suitable to connect this to the load terminals on solar charge controller for a secondary reading/report and don’t know if that is possible. Could I connect the Out- to the charge controller Load-, all the other devices – to the IN- of the meter, and the Load+ and all device+ to the meters VCC+? I was thinking if I did that then the charge controller should include any meter electrical usage in its report.
Thanks
Hello Tom，
Please kindly check if it is this item, ASIN: B081C6CYX7
https://www.amazon.com/dp/B081C6CYX7/ref=as_li_tl?tag=proeng-20
please notice this battery level icon is not to show actual AH value. It can only work when you set OAH (over-capacity protection).
What it shows is a capacity percentage= (actual charging or discharging AH value /preset AH value)*100%
OAH setting: Press up or down button to move yellow cursor to OAH, then keep pressing OK button to enter parameters setting. At last, please press OK to save setting.Regarding to your second questions, is it convenient for you to show us how it is by diagram?
Best regards.Tom
January 13, 2020 at 2:17 amPost count: 0Thanks for info. Very neat product. Working pretty good in my setup. Tho I wish it was a 30A capacity product and I wonder maybe if you have one similar at that amperage. Also curious your input if very brief like 1 sec a spike goes between 20-30 amps how the product is expected to perform.
For OAH if my battery is a 20AH lithium LiPo4 should I set that to 20? A little less like 18-19?
Thanks!
Hello Tom,
It can’t deal with current over 20A. For OAH setting, you can program it base on actual battery capacity.
Here is similar item, https://www.amazon.com/dp/B07YWVCBRN/ref=as_li_tl?tag=proeng-20
Best regards.
Tom
January 14, 2020 at 1:18 amPost count: 0Thanks for the info. I might upgrade to that other product and am excited you have it.
I set my OAH value and it does effect the battery % charged report, but it’s weird it seems the opposite of what I thought. When I clear the current AH value to 0 the battery gauge shows 0% / empty. If I run power for a minute it will go up to 1% with a tiny bit of red bar then showing. My OAH I set to 20AH and I would have expected clearing to 0 to make it show 100% then after a minute 99%.
I see when I press Ok to clear the current AH I can press it a second time and that will set the AH to the max (same as OAH), which I thought was maybe what I wanted and maybe with the OAH set it was going to descrement AH but instead it just stays always at that OAH value.
One last question. I see mention of a relay in the documentation and don’t understand how that is supposed to work. It seems like the feature that turns off power requires this I think and yet I don’t see anywhere info on how to set that up.
Thanks
Hello Tom,
Only the other version with relay can turn off output. This item is not with relay, so all of protection functions, like OVP, is not available.
And please kindly check your connection, that decide the direction of current. When the arrow near “OUT” points to left, it means current is inputing. AH value will increase.
If arrow points to right, that means current is outputing. AH value will decrease.
Best regards.
Tom
January 14, 2020 at 6:08 pmPost count: 0Outputting would mean charging the battery, right? I do see that when the battery is charging (solar active w/ no load) the AH decrements. When more power is used that solar generating it increments.
The confusing thing though is when AH = 0 it shows battery is at 0%. I would have expected it to be at 100%. Then if AH goes up to 1.0 it will show battery at 5% when I expected 95%.
Hello,
Current outputs from battery is discharging, If you charge battery, but AH value is decrease, thatr is to say you reverse connection. Please refer to our wiring diagram.
Anc capacity percentage on battery level icon = (actual charging or discharging AH value /preset AH value)*100%
If AH goes up to 1.0, that means capacity is only increased by 1 Ah , it is imposible to show 95%.
Best regards.
Tom
January 15, 2020 at 4:59 amPost count: 0I checked my wiring and it appears to match what your instructions say. Out- goes just to – on battery, VCC+ goes to my charge/load +, and IN- goes to my charge/load -.
What I see is that when my devices are consuming power it increments AH value. When charge happens that value decreases. I was under the impression this is the normal expected behavior. This worked decent for me with usefulness and just doesn’t work right with the battery meter and OAH functionality from what I’ve been able to figure out so far.
Tom
January 18, 2020 at 11:45 pmPost count: 0I tried this and while electricity still got through for my devices to work, it didn’t seem to measure usage right. My inverter turned on showed 0 amps usage. So I put it back how I had it previously, which matched what the instructions said to do, and then it recorded usage correctly.
I went ahead and bought that alternate 100amp version of this product and will give that a try to see if it operates right with battery level report.
Tom
January 20, 2020 at 7:00 pmPost count: 0I got my new meter, the VAC9010H, which is supposed to support up to 100 amps. Really I just needed around 30 amps at 12V.
I’m very confused looking at the instructions and product how I’m supposed to hook this up. The battery positive and negative cables seem so tiny and I worry if could even handle 20 amps at 12V let alone 30 and am confused the product is rated for 100 amps?
Some more of what I’m confused by:
I see the + from the battery in the picture go through the circle on the transformer, but have no idea why as I see no way to connect anything to it physically.
No idea what to think of the jumper cap what that is used for and if I change anything with it.
What does independent power supply wires mean? I’m assuming that is NOT what I want and rather I want to go off the diagram called “no relay power supply wires connection” with my setup the is just a 12V lithium battery and a solar charge controller hooked up (all my other load devices go off the solar charge controllers load ports).
Thanks
Hello Tom，
1. Please choose suitable wire gauge according to actual load current. If the battery cable is too tiny to deal with large current, you should replace it with heavy wire.
2. The circle you mean is a current transformer, which is used to measure current.
3. Jumper cap is to decide where the module draw power from. If it draws power from meauring circuit, it can only measure DC 12- 90V voltage.
If you want to measure voltage reading below 12v, please connect indepent power supply (DC 10-60v) for it.
Best regards.
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