Fogstar Drift Battery Overload. (1 Viewer)

[EuroTrotters]

Just reading someone else's post about SOC

As I did, I momentarily overloaded the battery.

Now the Victron Inverter won't charge and the Battery app shows Zero charge along with Red Battery Icon.

Im about to leave for the airport, sent an email to Fogstar

Anyone know how to re-set pleasE?

 

[pjay]

Try clearing the history for the app on your phone and then relaunch it.

Pete

 

[jezport]

Have you an on off button on the battery? May be turn off and on.
Next, what warnings are showing in the list on the app?

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[EuroTrotters]

Im at the airport now.

It will be on my mind, bothering me now

 

[rwg]

The app shows 'Short Circuit Detection (SCD)' in the Protect History page, so that would imply that the BMS is set up to at least try to deal with overload/short circuit situations.

Maybe it waits for disconnection of external connections (no load, no external voltage) before the short circuit protection resets? That's what I'd try as a first attempt anyway. Be interesting to hear what Fogstar say, and I hope the battery turns out to be OK.

cheers,

Robin

 

[jezport]

There is a setting in the advanced setting with a recovery time. So I guess it should reset itself.

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[RogerIvy]

When you get back to your battery try the JBD app (XiaoxiangBMS).
It’s not as nice for normal daily use but probably better for debugging.

 

[EuroTrotters]

When you get back to your battery try the JBD app (XiaoxiangBMS).
It’s not as nice for normal daily use but probably better for debugging.

Thanks, Fogstar have not replied yet, but I will request the PIN.

 

[pappajohn]

If you want something to be bothered about .........will your van be a burnt out shell when you get back

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[EuroTrotters]

If you want something to be bothered about .........will your van be a burnt out shell when you get back

Well it will take out my cars, van and caravan too. Probably even the house

 

[St3v3]

Thanks, Fogstar have not replied yet, but I will request the PIN.

See PM.

 

[EuroTrotters]

update:

getting nowhere with Fogstar

many weeks down now

pretty peed off

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[Raul]

SCP resets itself after 60 seconds, IF, you disconnect every charge discharge source from the battery. On re connection any charger or inverter that has capacitors, you need a pre charge resistor to protect the battery and going in to SCP again.
I use a pencil sharpened both ends, and used that in line before I make the connection to mppt, inverter etc. I hold it for about 10-15 seconds to precharge the caps in the mppt, so it does not spark or surge, if it surges, the bms will disconnect with SCP.

 

[EuroTrotters]

SCP resets itself after 60 seconds, IF, you disconnect every charge discharge source from the battery. On re connection any charger or inverter that has capacitors, you need a pre charge resistor to protect the battery and going in to SCP again.
I use a pencil sharpened both ends, and used that in line before I make the connection to mppt, inverter etc. I hold it for about 10-15 seconds to precharge the caps in the mppt, so it does not spark or surge, if it surges, the bms will disconnect with SCP.

thanks Raul

 

[Cush]

If you download the xiaoxiang app and pay the £7 to be able to adjust the settings you will see a toggle switch called “load detect switch”. This is used in the event of a short circuit and perhaps shutdown. Might be worth a go? Understand that the Fogstar app is a version of the xioxiang app. Might be able to do it in the settings there too?

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[Raul]

If you download the xiaoxiang app and pay the £7 to be able to adjust the settings you will see a toggle switch called “load detect switch”. This is used in the event of a short circuit and perhaps shutdown. Might be worth a go? Understand that the Fogstar app is a version of the xioxiang app. Might be able to do it in the settings there too?

If it has that function, it’s good, it works like a pre charge, what it does cancels the trigger time for SCP, and allows the caps to charge. Seplos has that function and is valid for 3seconds, enough to charge the caps.

 

[Cush]

EuroTrotters , may I ask what you mean by “overloaded” the battery? Sorry, still learning bits.

If it was over voltage protection it may just need the discharge turned on until the voltage drops to the preset level. Just a thought.

Cush

 

[EuroTrotters]

EuroTrotters , may I ask what you mean by “overloaded” the battery? Sorry, still learning bits.

If it was over voltage protection it may just need the discharge turned on until the voltage drops to the preset level. Just a thought.

Cush

The 105ah Fogstar is connected to my Victron MultiPlus 2000va Inverter / Charger.

I have wired it all in via a Sergeant Auto Changeover unit that automatically switches from Shore/Generator/Battery

Battery was fully charged

I accidentally turned on a 2kw fan heater. It shut down and then I got the error above.

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[EuroTrotters]

I am 3 weeks without the battery now. I have been emailing Fogstar and now they say they are going to have to collect the batter to inspect at their premises.

I am glad we are not away or in Europe

 

[Just smiffy]

 

[Lenny HB]

I have wired it all in via a Sergeant Auto Changeover unit that automatically switches from Shore/Generator/Battery

Why?
One of the main reasons for buying a Multiplus is that it has that build in.

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[rob0114]

Hi,

Had a similar problem with a 230AH Fogstar which showed 0% charge abruptly - Fogstar told me it was the BMS out of sync with the state of charge as it needs a full charge (100%) every couple of cycles to reset the Ah counter.

It was ok for a couple of months then happened again when I knew it had a recent 100% charge - couldn't get to the bottom of it with Fogstar however they did offer a full refund (after 8 months) or full diagnostic/repair - didn't want to lose the battery for that long so opted for a refund.

I found raising a support ticket more productive than an email direct.

Hope that helps.

 

[EuroTrotters]

Why?
One of the main reasons for buying a Multiplus is that it has that build in.

no generator option, which I no longer use.

But the 3000va may have been better as it has the option to supply another output for when you don't wish to power the Fridge

 

[Cush]

The 105ah Fogstar is connected to my Victron MultiPlus 2000va Inverter / Charger.

I have wired it all in via a Sergeant Auto Changeover unit that automatically switches from Shore/Generator/Battery

Battery was fully charged

I accidentally turned on a 2kw fan heater. It shut down and then I got the error above.

If it’s a case of exceeding the max continuous discharge rate for that battery (100 amps), then it might need isolated from the system and have a charger that doesn’t need to detect a charge across the terminals to put some charge back in. There are some good Fogstar social groups around where I’m sure they will have a solution for Turing your battery back on. Fingers crossed

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[EuroTrotters]

If it’s a case of exceeding the max continuous discharge rate for that battery (100 amps), then it might need isolated from the system and have a charger that doesn’t need to detect a charge across the terminals to put some charge back in. There are some good Fogstar social groups around where I’m sure they will have a solution for Turing your battery back on. Fingers crossed

Thank you .

It was momentarily overloaded, not drained.

It was showing 10.9v across the terminals. But the victron or mobile charger could not charge the battery.

 

[Cush]

Thank you .

It was momentarily overloaded, not drained.

It was showing 10.9v across the terminals. But the victron or mobile charger could not charge the battery.

Modern smart charger may need to detect a bit more across the terminals. I understand that although a LiFePO4 can be “turned off” there is still a small reading across the terminals. This is not enough to do anything useful. I would try a dumb charger for a short time. Are you able to see the individual cell voltages? They all good?

 

[EuroTrotters]

Modern smart charger may need to detect a bit more across the terminals. I understand that although a LiFePO4 can be “turned off” there is still a small reading across the terminals. This is not enough to do anything useful. I would try a dumb charger for a short time. Are you able to see the individual cell voltages? They all good?

tried a dumb charger !

here is the screenshot of cells

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[Jo662]

Why is it we only seem to read about Fogstar lithium battery problems,or am I missing other battery posts? No pun intended

Is it because they sell more than anyone else?

 

[Lenny HB]

Why is it we only seem to read about Fogstar lithium battery problems,or am I missing other battery posts? No pun intended

Is it because they sell more than anyone else?

They have sold a lot to Funsters so quite popular on here, there are quite a few posts about problems with other makes. It is still only a very few batteries that have had problem but for some reason the Fogtar threads appear to drag on maybe because they are a good price and more people are interested in them.

From what I have seen their customer service is good and I've not seen anything that would put me off buying them. They use good quality cells most of the problem has been the communication between the BMS and the phone Bluetooth app.
One recent long running thread the problem was solved when the user bought a modern phone. I don't think you can blame Fogstar for that it happens with all sorts of apps and computer programs.

On this thread Trev's problem is self inflicted he put a 170 amp load on the battery who's max current is speced at 100 amps. The BMS has turned off to protect the battery OK you would have expected it to reset so there is a problem with the BMS but it was a hell of an overload.

 

[Jo662]

Thank you Lenny HB all good to know

Your about early Lenny,what’s going on

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