Fogstar Drift App

H

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
H
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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Update:
Went away on Friday for a 4 night break over New Year.
Victron Smart Shunt said the batteries were at 100% SOC.
Got to site, set up and no 12v power in the hab.
Checked the shunt app and it said 100% SOC and 13.4v.
Opened the Xiaoxiang app, as I can't connect to the Fogstar app, and it said, for both batteries, 100% SOC, 105AH , 13.4v and cell voltages of 3.558v on one battery and 3.458v on the other.
But I noticed that charge and discharge were set to off, which I hadn't done, so the BMS had turned them off ?
Unfortunately although the Xiaoxiang app will let you monitor the batteries it doesn't allow you to alter any settings.
So no battery power.
Luckily I was able to move to an EHU pitch so trip saved.
Yesterday I borrowed an iPhone off another motorhomer and downloaded the Fogstar app onto that and it connected to the app.
Great I thought, I can turn charge/discharge on and use the batteries.
No such luck as when I tried to turn discharge/charge on I got a message saying pack over voltage/cell over voltage and it wouldn't let me turn them on.
This even though the app is saying battery voltage is 13.4v and all cell voltages are below 3.6v so the battery and cell voltages are not over.
Pretty disappointed really.
I will ring Fogstar next week when they are open but I have a feeling these batteries are going back.
 
Upvote 0
Hi
I have a fogstar battery and in the advanced settings (which I haven't changed and I appreciate you can't get to) the cell overvoltage trigger is set to 3.7V but the overvoltage release is set at 3.5V. I guess this means the cell voltage has to drop below 3.5V before the bms will let you turn charge/discharge back on?
Is it possible your charging system is overcharging eg not via a b2b on lithium setting?
Ian
 
Upvote 0
Ian_H said:
Hi
I have a fogstar battery and in the advanced settings (which I haven't changed and I appreciate you can't get to) the cell overvoltage trigger is set to 3.7V but the overvoltage release is set at 3.5V. I guess this means the cell voltage has to drop below 3.5V before the bms will let you turn charge/discharge back on?
Is it possible your charging system is overcharging eg not via a b2b on lithium setting?
Ian
Click to expand...
B2B (Sterling) and MPPT (Victron) are set to lithium, 14.2v charge and 13.5v float, so neither should overcharge.
 
Upvote 0
headlight said:
B2B (Sterling) and MPPT (Victron) are set to lithium, 14.2v charge and 13.5v float, so neither should overcharge.
Click to expand...
We have different batteries (mine is 230Ah underseat) and fogstar told me they use 6 different bms across their range, but the pack overvoltage limit on mine is 14.7V and reset 14.4V, ie way above what yours should be seeing. Worth sticking a meter on them with the engine running?

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Upvote 0
Ian_H said:
We have different batteries (mine is 230Ah underseat) and fogstar told me they use 6 different bms across their range, but the pack overvoltage limit on mine is 14.7V and reset 14.4V, ie way above what yours should be seeing. Worth sticking a meter on them with the engine running?
Click to expand...
Already done that.
13.4v with and without the engine running and 13.6v on EHU.
Screenshot_20231231_110024.jpg
 
Upvote 0
I really am starting to appreciate the simple qualities of my Relion battery, no bluetooth, no access to the bms and no heater. It has just sat there for 6 years being a battery and looking after itself. I keep an eye on the charge level via my Victron app.

I am starting to get concerned about my new van which will need a larger under seat battery and these seem to come with built in bluetooth. 😱
 
Upvote 0
This what the Xiaoxiang app is showing as of now.
Screenshot_20231231_113055_XiaoXiangElectric.jpg

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Upvote 0
Pausim said:
I really am starting to appreciate the simple qualities of my Relion battery, no bluetooth, no access to the bms and no heater. It has just sat there for 6 years being a battery and looking after itself. I keep an eye on the charge level via my Victron app.

I am starting to get concerned about my new van which will need a larger under seat battery and these seem to come with built in bluetooth. 😱
Click to expand...
Same here with my KS Energy but it does have BMS & app but just to monitor not play with.
 
Upvote 0
MichaelT said:
Same here with my KS Energy but it does have BMS & app but just to monitor not play with.
Click to expand...
Interesting, the dealer was recommending KS Energy. I can’t afford to have a battery that shuts down because my Efoy fuel cell must stay powered at all times i) to know when it needs to cut in and recharge the battery and ii) to protect itself from freezing.
 
Upvote 0
headlight said:
Update:
Went away on Friday for a 4 night break over New Year.
Victron Smart Shunt said the batteries were at 100% SOC.
Got to site, set up and no 12v power in the hab.
Checked the shunt app and it said 100% SOC and 13.4v.
Opened the Xiaoxiang app, as I can't connect to the Fogstar app, and it said, for both batteries, 100% SOC, 105AH , 13.4v and cell voltages of 3.558v on one battery and 3.458v on the other.
But I noticed that charge and discharge were set to off, which I hadn't done, so the BMS had turned them off ?
Unfortunately although the Xiaoxiang app will let you monitor the batteries it doesn't allow you to alter any settings.
So no battery power.
Luckily I was able to move to an EHU pitch so trip saved.
Yesterday I borrowed an iPhone off another motorhomer and downloaded the Fogstar app onto that and it connected to the app.
Great I thought, I can turn charge/discharge on and use the batteries.
No such luck as when I tried to turn discharge/charge on I got a message saying pack over voltage/cell over voltage and it wouldn't let me turn them on.
This even though the app is saying battery voltage is 13.4v and all cell voltages are below 3.6v so the battery and cell voltages are not over.
Pretty disappointed really.
I will ring Fogstar next week when they are open but I have a feeling these batteries are going back.
Click to expand...
What version of the android Xiaoxiang app are you using I am using 3.1.1026 on Aolithiums that allows full control over all BMS settings including switching charge and discharge.
 
Last edited:
Upvote 0
headlight said:
And this is the Fogstar app not connecting. View attachment 849618
Click to expand...

I’ve just tried the Fogstar app whilst sat here in the conservatory

it’s connected to the tv in the conservatory, Apple tv in my demo room downstairs and bedroom to upstairs

IMG_0007.png

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Upvote 0
Steve N Tracy said:
What version of the Xiaoxiang app are you using I am using 3.1.1026 that allows full control over all BMS settings including switching charge and discharge.
Click to expand...
No idea just the free app with a logo of a blue elephant.
On the Fogstar forum I've been told that I need to use the paid for app version to be able to alter settings.
I'm not prepared to pay for an app when I've already paid for the Fogstar app.
 
Upvote 0
headlight said:
No idea just the free app with a logo of a blue elephant.
On the Fogstar forum I've been told that I need to use the paid for app version to be able to alter settings.
I'm not prepared to pay for an app when I've already paid for the Fogstar app.
Click to expand...
If you pm your email I can send you a android copy of 3.1.1926 which is free, strangely the Fogstar app is also free on android.
 
Upvote 0
Can you give a try with JK app? Jinkong and it does have a elegant on white background, the pairing is 1234, and settings access is 123456 pass.
 
Upvote 0
Wow, disappointing. What a saga, I'm really interested in finding out how It ends.

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Upvote 0
Pausim said:
Interesting, the dealer was recommending KS Energy. I can’t afford to have a battery that shuts down because my Efoy fuel cell must stay powered at all times i) to know when it needs to cut in and recharge the battery and ii) to protect itself from freezing.
Click to expand...
Ours never shuts down
 
Upvote 0
headlight said:
No idea just the free app with a logo of a blue elephant.
On the Fogstar forum I've been told that I need to use the paid for app version to be able to alter settings.
I'm not prepared to pay for an app when I've already paid for the Fogstar app.
Click to expand...
I assume you mean you paid for the fogstar app by buying the battery from them?
 
Upvote 0
In the fogstar app I've just found a couple of 'release MOS' buttons that might help you if you get the app working. Under advanced settings (password req), calibration.

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Upvote 0
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

IMG_0010.png
 
Upvote 0
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…..🤔
 
Upvote 0
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...
What I meant was yes the app is free but it's development obviously involves a cost which I assume is built in to the cost of their batteries.

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