Jag installerade lifepo4 för ca 2,5 år sedan (Sinopoly200Ah).... något har gått fel kan också vara flera saker som har orsakat prolemet. En sak är säkert att jag fick en dåligt fungerande BMS123 den stängde inte av som den skulle och var mest "kingkig" och samarbetade dåligt... just innan jag åkte till Marocko så skickade tilverkaren i holland en ny enhet.... efter detta så har det fungerat ganska bra...
Men tyvärr så fick mina celler ta emot mycket stryk under tiden, när BMS:en inte skötte sitt jobb...
I början av juni tog jag ett beslut att beställa en gång till helt nya Sinopoly 200Ah (all omyggnad jag har gjort gör nu att jag sitter fast i att just kunna använda lifepo4 batteri och celler Sinopoly 200Ah)
Jag förskott betalade allt om köpte även tjänsten att EW-Power skulle botten balancera alla celler till 2,75v...
Jag fick efter lång transport tid äntligen mina nya lifepo4 celler... Det förstas jag gör är att jag vill kolla om de har gjort vad jag har betalt för..... till min förskräkelse så mätter jag upp alla celler som nu är mellan 3.04 - 3.09v..
Och detta är ju inte vad jag hade förväntat mig... så jag kontaktar EW-P. ... ni kan se mina frågor och deras svar i mail härunder..... sen skulle det vara intressant att höra med er som har mer kundskap om lifepo4 vad ni säger...
I have measured the cells
cell 984... 3.04v
cell 983... 3.07v
cell 982... 3.09v
cell 981... 3.07v
I paid extra to get those bottoms balanced ... do you think they are now bottom balanced?
Then on the expensive shipping, I think the time between delivery and receipt matches very bad with what EW-Power promises and what I have paid for, how do you solve this?...I am grateful for a clear written answer
Inget svar den dagen så jag skickar detta nästa dag....
Good morning...
I am grateful if you will answer my questions in yesterday's reply as soon as possible.
Nu svara EW-P.
thank you for confirmation you have got he package.
I am very sorry for delayed delivery. Please understand that delayed shipment is not in our hands but TNT and I am very sorry again
that this even happen. TNT is working on changes in company with Fedex.
Regarding bottom balancing. I will ask my collegues what happen, because I did ask to do bottom balancing to 2,7V.
Best Regards,
Petr Šubrt
Key Account Manager
Jag skriver igen
Hi Petr !
Can you answer me quickly how I'm going to do, as it's now, I dare not mount the cells, and I have no possibility of even balancing the cells when I live in a camper and only have 230v from an inverter ...
I have one more question, would not the cells come in a wooden box?
Ingen svara den dagen så jag skickar ett nytt mail
Hi Petr !
Can you answer me quickly how I'm going to do, as it's now, I dare not mount the cells, and I have no possibility of even balancing the cells when I live in a camper and only have 230v from an inverter ...
I have one more question, would not the cells come in a wooden box?
EW-P nästa svar blir såhär...
Hello Peter,
Thank you for your email.
I'm very sorry about this problem.
I asked our technic for this problem but he wasn't in work.
I really want to help you. Last email from him was that he made botom balancing and gave batteries to our warehouse.
I will send you news ASAP if I will know something.
Thank you
In the case of any enquiries you dont hesitate to contact me.
Jan Hanák
Export sales
Mitt nästa mail...
Hi.!
Here are photos on the cells, are these cells from EW-power?
If you look at photo 0007 you will see a yellow square, in that square is written in red the volts for the respective cell. Do you think this is bottom balance.? I can make a movie where I measure the cells so you see that is correct.
Thankful for a quick response
Då svarar EW-P såhär....
Hello Peter,
Thank you for your email with pictures.
I spoke with our technic and he gives me result:
All of these batteries were discharged to 2,75 V. But each battery then works individually and therefore gets on these values which you see now.
Important is that all batteries were in the same 2,75V.
If you have some question of this you could contact our product manager:
Jakub Staniček
Product Manager Solar
stanicek@gwlpower.cz
+420-277 007 533
+420-777 464 945
I had consultation about your problem with him and he could help you.
Då svarar jag såhär...
Hi.!
Have I understood your answer right? ... that you have bottom balanced all four cells to 2.75v ... and after that the cells' internal voltage has increased to the voltage I measured on each cell.?..(see previous mail and photo)
Peter Nyberg
Och då svarar EW-P mig såhär...
Hello Peter,
Thank you for your email.
Yes you understand right.
Please you could call to our product manager he could explain you this problem.
Thank you
In the case of any enquiries you dont hesitate to contact me.
Jan Hanák
Export sales
Så vad säger ni... för mig är detta helt ny information om lifepo4 celler att de ökar spänningen när man har tömt dem.... håller ni med EW-P ?
Som ni förstår så är jag väldigt tacksam för era kloka svar här i forumet...
Men tyvärr så fick mina celler ta emot mycket stryk under tiden, när BMS:en inte skötte sitt jobb...
I början av juni tog jag ett beslut att beställa en gång till helt nya Sinopoly 200Ah (all omyggnad jag har gjort gör nu att jag sitter fast i att just kunna använda lifepo4 batteri och celler Sinopoly 200Ah)
Jag förskott betalade allt om köpte även tjänsten att EW-Power skulle botten balancera alla celler till 2,75v...
Jag fick efter lång transport tid äntligen mina nya lifepo4 celler... Det förstas jag gör är att jag vill kolla om de har gjort vad jag har betalt för..... till min förskräkelse så mätter jag upp alla celler som nu är mellan 3.04 - 3.09v..
Och detta är ju inte vad jag hade förväntat mig... så jag kontaktar EW-P. ... ni kan se mina frågor och deras svar i mail härunder..... sen skulle det vara intressant att höra med er som har mer kundskap om lifepo4 vad ni säger...
I have measured the cells
cell 984... 3.04v
cell 983... 3.07v
cell 982... 3.09v
cell 981... 3.07v
I paid extra to get those bottoms balanced ... do you think they are now bottom balanced?
Then on the expensive shipping, I think the time between delivery and receipt matches very bad with what EW-Power promises and what I have paid for, how do you solve this?...I am grateful for a clear written answer
Inget svar den dagen så jag skickar detta nästa dag....
Good morning...
I am grateful if you will answer my questions in yesterday's reply as soon as possible.
Nu svara EW-P.
thank you for confirmation you have got he package.
I am very sorry for delayed delivery. Please understand that delayed shipment is not in our hands but TNT and I am very sorry again
that this even happen. TNT is working on changes in company with Fedex.
Regarding bottom balancing. I will ask my collegues what happen, because I did ask to do bottom balancing to 2,7V.
Best Regards,
Petr Šubrt
Key Account Manager
Jag skriver igen
Hi Petr !
Can you answer me quickly how I'm going to do, as it's now, I dare not mount the cells, and I have no possibility of even balancing the cells when I live in a camper and only have 230v from an inverter ...
I have one more question, would not the cells come in a wooden box?
Ingen svara den dagen så jag skickar ett nytt mail
Hi Petr !
Can you answer me quickly how I'm going to do, as it's now, I dare not mount the cells, and I have no possibility of even balancing the cells when I live in a camper and only have 230v from an inverter ...
I have one more question, would not the cells come in a wooden box?
EW-P nästa svar blir såhär...
Hello Peter,
Thank you for your email.
I'm very sorry about this problem.
I asked our technic for this problem but he wasn't in work.
I really want to help you. Last email from him was that he made botom balancing and gave batteries to our warehouse.
I will send you news ASAP if I will know something.
Thank you
In the case of any enquiries you dont hesitate to contact me.
Jan Hanák
Export sales
Mitt nästa mail...
Hi.!
Here are photos on the cells, are these cells from EW-power?
If you look at photo 0007 you will see a yellow square, in that square is written in red the volts for the respective cell. Do you think this is bottom balance.? I can make a movie where I measure the cells so you see that is correct.
Thankful for a quick response
Då svarar EW-P såhär....
Hello Peter,
Thank you for your email with pictures.
I spoke with our technic and he gives me result:
All of these batteries were discharged to 2,75 V. But each battery then works individually and therefore gets on these values which you see now.
Important is that all batteries were in the same 2,75V.
If you have some question of this you could contact our product manager:
Jakub Staniček
Product Manager Solar
stanicek@gwlpower.cz
+420-277 007 533
+420-777 464 945
I had consultation about your problem with him and he could help you.
Då svarar jag såhär...
Hi.!
Have I understood your answer right? ... that you have bottom balanced all four cells to 2.75v ... and after that the cells' internal voltage has increased to the voltage I measured on each cell.?..(see previous mail and photo)
Peter Nyberg
Och då svarar EW-P mig såhär...
Hello Peter,
Thank you for your email.
Yes you understand right.
Please you could call to our product manager he could explain you this problem.
Thank you
In the case of any enquiries you dont hesitate to contact me.
Jan Hanák
Export sales
Så vad säger ni... för mig är detta helt ny information om lifepo4 celler att de ökar spänningen när man har tömt dem.... håller ni med EW-P ?
Som ni förstår så är jag väldigt tacksam för era kloka svar här i forumet...