Fogstar Drift App

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headlight

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Swift Suntor 590RL
Anybody having problems with the app ?
I received 2 x 105AH Fogstar Drifts today.
I down loaded the app on to my phone but no matter what I do my phone just searches and searches and doesn't connect.
I have also down loaded the app on to my tablet but that won't connect either.
I have Bluetooth and location turned on on both devices and have uninstalled and re-installed the app several times on both devices but still no joy.
I can connect to other devices via Bluetooth no problem.
 
Solution2
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Steve N Tracy said:
Due to slight differences in resistances due to manufacture and even temperature, and electricity always takes the path of least resistance there will inevitably be one battery that drops quicker them the other my two Aolithium batteries rarely discharge at exactly the same rate there is always a slight difference, but not enough to cause me any concern.
Click to expand...
According to the app only 1 battery at a time is discharging.
I put a 5amp load on the system and 1 battery showed it had a 5amp load on it and the other battery showed no load on it.
I would have expected both batteries to have shown about a 2.5amp load on each ?
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Al n Val said:
I’ve not paid for the Fogstar Drift app

it’s free from the app store if you buy the batteries or not and 1 app sees both batteries

View attachment 849707
Click to expand...
Is this the new app as my apps only see I battery each but Fogstar told me there was a new app on the way and it would see 2 batteries in parallel as 1 battery.
 
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headlight said:
Is this the new app as my apps only see I battery each but Fogstar told me there was a new app on the way and it would see 2 batteries in parallel as 1 battery.
Click to expand...

No it’s the original drift app i’ve had about 6 months

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Anyway I've given up trying to use the batteries.
I will ring Fogstar next week and see what they say/suggest.
I'm very disappointed with their products so far as I also bought their lithium charger and was told by them that it was ideal to use in my motorhome.
It was to loud to use comfortably at home yet alone in the van.
 
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What do you think the temperature readouts are?
 
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Cell bank 1
Cell bank 2
3 was the BMS temperature shown against cell 3, but now has been moved to the bms front page, so not to cause confusion!!
Best information comes directly from Fogstar!
 
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Xiaoxiang bms app does not connect to my Fogstar. Probably not written to do so!
My Fogstar app works.
As recommended somewhere else the Overkill Solar App also works very well, but be careful with what you start using it for! Too much information can be dangerous!!!
Best thing to do is to talk to Fogstar!!!
 
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Just smiffy said:
I wouldn’t have lasted this long with them, I would have sent them back already. There is obviously something wrong with them if most other people don’t have trouble with them, but I must say that after hearing people are starting to have problems they wouldn’t be my first choice now and way down the list when I buy a lithium battery…..🤔
Click to expand...
I think this thread will have attracted the people who have had problems. Most do not have problems otherwise they would have gone bust by now?

I have a Roamer battery and the app is a pain to get it to connect. Half the time it refuses unless I restart it a few times. Other times is just says disconnected. But I can alway usually eventually get it to connect.

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So another update.
I can now connect to the Fogstar app due to buying a new phone.
But BMS problems continue as I've just been to the van, it's in storage, connected to the app and watched the charge/discharge turning itself on and off.
Also even though the 2 batteries are connected in parallel, with discharge on on both batteries if I put a load on them only 1 of the batteries appears to supply power at a time.
1 battery registers a load on it whilst the other doesn't.
If I turn discharge off on the battery that appears to be supplying power the other battery immediately registers a load.
Turn discharge back on on the battery and it shows no load on it although obviously the load should be shared between both.
 
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headlight said:
So another update.
I can now connect to the Fogstar app due to buying a new phone.
But BMS problems continue as I've just been to the van, it's in storage, connected to the app and watched the charge/discharge turning itself on and off.
Also even though the 2 batteries are connected in parallel, with discharge on on both batteries if I put a load on them only 1 of the batteries appears to supply power at a time.
1 battery registers a load on it whilst the other doesn't.
If I turn discharge off on the battery that appears to be supplying power the other battery immediately registers a load.
Turn discharge back on on the battery and it shows no load on it although obviously the load should be shared between both.
Click to expand...
Thats an expensive battery if you have to buy a new phone🤣🤣🤣🤣

Personally I would have returned them at the start but maybe speak with Fogstar to see if thats normal, maybe the BMS does something but doubtful, like @lennyhb says +ve on one battery and -ve on the other?
 
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Lenny HB said:
With the load do you have the positive connected to one battery and the negative to the other one?
Click to expand...
Yes, so the load should be shared equally between both batteries but it doesn't appear to be.
I've had these batteries about 6 weeks now and TBH am not impressed at all.
 
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It is probable just the reporting from the BMS and the batteries are fine. Now you have the app working on your phone the batteries may just need a few cycles for the BMS to sync up.

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Due to slight differences in resistances due to manufacture and even temperature, and electricity always takes the path of least resistance there will inevitably be one battery that drops quicker them the other my two Aolithium batteries rarely discharge at exactly the same rate there is always a slight difference, but not enough to cause me any concern.
 
Upvote 0
Lenny HB said:
It is probable just the reporting from the BMS and the batteries are fine. Now you have the app working on your phone the batteries may just need a few cycles for the BMS to sync up.
Click to expand...
Yes I don't think there is a problem with the batteries themselves I think it is the BMS needs cycling.
If you have a minute Lenny HB can you advise on my other thread "batteries not connected to solar".
 
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Steve N Tracy said:
Due to slight differences in resistances due to manufacture and even temperature, and electricity always takes the path of least resistance there will inevitably be one battery that drops quicker them the other my two Aolithium batteries rarely discharge at exactly the same rate there is always a slight difference, but not enough to cause me any concern.
Click to expand...
According to the app only 1 battery at a time is discharging.
I put a 5amp load on the system and 1 battery showed it had a 5amp load on it and the other battery showed no load on it.
I would have expected both batteries to have shown about a 2.5amp load on each ?
 
Upvote 0
Solution
headlight said:
According to the app only 1 battery at a time is discharging.
I put a 5amp load on the system and 1 battery showed it had a 5amp load on it and the other battery showed no load on it.
I would have expected both batteries to have shown about a 2.5amp load on each ?
Click to expand...
My Aolithiums do the same after a while it they begin to get closer to the same discharge rate after 24 hrs they are almost the same amps left.

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Steve N Tracy said:
My Aolithiums do the same after a while it they begin to get closer to the same discharge rate after 24 hrs they are almost the same amps left.
Click to expand...
With a 5amp load shouldn't both batteries be registering a load even if it is not split exactly 50/50 between both batteries ?
 
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headlight said:
With a 5amp load shouldn't both batteries be registering a load even if it is not split exactly 50/50 between both batteries ?
Click to expand...
In a ideal world yes but that seldom occurs leave the load on a while and see if it equals,
Mine seem to swap, on first switch on after a charge some times battery 1 starts to discharge first, sometimes it's battery 2.
 
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Steve N Tracy said:
In a ideal world yes but that seldom occurs leave the load on a while and see if it equals,
Mine seem to swap, on first switch on after a charge some times battery 1 starts to discharge first, sometimes it's battery 2.
Click to expand...
Thats wrong, if the battery hasn't got any discharge triggers: over temp, under voltage etc., both should contribute to the load instantly, no blips, even if its not 50:50, a 60:40 its still acceptable. Unless you have a perfect equal path for both.
 
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headlight said:
With a 5amp load shouldn't both batteries be registering a load even if it is not split exactly 50/50 between both batteries ?
Click to expand...
Yes, both batteries should register a load, even 30/70 if not 50/50. If one is lagging, it relies on the other to keep it awake.

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Raul said:
Thats wrong, if the battery hasn't got any discharge triggers: over temp, under voltage etc., both should contribute to the load instantly, no blips, even if its not 50:50, a 60:40 its still acceptable. Unless you have a perfect equal path for both.
Click to expand...
Both batteries were showing 99% SOC, 13.3v and 104.4 AH and 104.5 AH respectively and about 6c.
The BMS is repeatedly turning charge/discharge on/off on both batteries.
I watched the app for a good hour and it did this every few seconds on both batteries.
 
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