I have a 160amp alternator and I've never been able to get decent output from the 120S and 250SE combined. Best I've ever gotten was 35 amps going to my service batteries. All connections are 1/0 full copper connections, several in line fuses etc. Tried to bypass fuses to see if they were the culprits, they were not.
Hi, We will try to find out why you haven't got more than 35A. Is the cables sized according to recommendation? I guess this can be a long conversation to find the reason, so I recommend you to contact us at support@ctek.com for better help. Best regards CTEK Support
I have loved my CTEK D250SA for the last 4 years. However, CTEK haven't kept up with technology or user demand. Their D series chargers max out at 20amps unless you get a smart pass that apparently gives up to 120amps from alternator (too much for most systems). There's no Bluetooth connection or app for monitoring the charge status, you have to buy a wall mounted system monitor for that. I have very very reluctantly gone over to Victron. I would have loved to upgrade my D250SA to maybe a D250SE if it had Bluetooth monitoring, a 30-50 amp charge profile and access to settings which can be precisely set for your specific system. Modern Motorhomes/RVs demands have outpaced CTEK.
Hi, Thanks for the Video. I would ask you if it is possible to connect the starter battery to the service battery with a 500 A Switch so that is still possible to start the engine when the starter battery failed or in case I need to use the winch. Thanks Luca
Hi, if you have the D250SA or D250SE and the SMARTPASS 120S the SMARTPASS120S will automatically connect the starter battery and the service battery automatically if needed - you do not need to do anything to have that extra start help. Best regards CTEK Support
Hi, I have the D250SE and the wiring diagram shows the service battery negative returning to the starter battery negative with a ground halfway along. Does the service battery need to be grounded and returned to the starter negative or can it be one or the other? Also there is no recommended wire size, can I assume that it should be the same as the wire from the starter battery to the D250SE?
Hi, The connection is showing a common connection (to the chassis) the service battery can be earthed / grounded to the chassis. The earth / ground cable should be the same thickness as the starter battery to D250. Best regards CTEK Support
Hi, Thank you for reaching out! 😊 Please contact us at support.ctek.com/ or e-mail us at support@ctek.com and we'll help you from there. Have a nice day! 😊
Hello, I am changing to lithium battery.Do I attach the small black wire to the output service battery post on the cetek d250se unit now?.or the positive post on the lithium battery itself?..
Hi, just installed Ctek B250se. Without connecting the ignition wire. When i start the van the yellow bottom led lights up and the bottom right yellow led lights up. And the voltage on the leisure battery increases. This would suggest the Ctek is charging . So it seems to work without the ignition wire connected , Even though i have been told i have a smart alternator. My thinking is the smart alternator sees the starting battery as a bit low and therefore starts charging it. Then the Ctek sees the higher voltage and starts doing the DC to Dc to the leisure battery and therefore pulling the starter voltage down enough for the smart alternator to keep supplying a higher voltage and therefore current to the start battery and leisure battery. So i am struggling to understand what situation will cause the smart alternator to stop charging and therefore not trigger the ctek to do DC to DC until the leisure battery is charged. Also when the engine is switched off, the Ctek sees the drop in voltage and switches off the DC to DC conversion and both LED go out.. So it all seems to function as expected without the ignition wire connected?
Hi, Even when the ignition wire is not attached, the D250SE will work. It will start as soon as the voltage is higher than 13,1V and shut down when the voltage is lower than 12,8V The problem when you have a smart alternator is that the ignition is turned off as soon as there is power enough in the battery to use for the electronic components. This can happen many times every second, and this makes the D250SE start up and close down often. even if the voltage in the battery is raised it is not charged as effectively as possible. If you have a start stop vehicle I recommend you to attach the ignition wire. Best regards CTEK Support
Hello.I have one question and please help me to understand it .I bought CTEK D250SE for my camper. And now I have to choose battery for my system.when I read recomedations of manifactures they said that below 100 ah you need D250SE with SMARTPASS. Cant i have only D250SE for 110 ah battery system?
Hi, Thank you for choosing CTEK! You can definitely have the D250SE for a 110Ah battery. BUT!... if you drain your battery completely and you want it charged up fast, the 20A from the D250SE might be too little - and if so - we recommend you to have the SMARTPASS120S as well. But it all comes to how drained the battery gets before you can charge and how many consumers active whilst charging. For more info - contact support@ctek.com Best regards CTEK Support
Hi there, I just wanted to check if the Ctek 250SE and 120 Smartpass are compatible with Lithium Iron Phosphate batteries. Some web based info suggest not but having bought both the 250 and 120 from Ctek both user manuals state they do. Sorry to bother you but could you confirm. Thanks InTransit
I'm having trouble with my d250se at the moment, my alternator is giving out 14.5v across starter battery when the ctek isn't connected, as soon as I connect the ctek back up, the voltage across my starter battery drops to 12v, this is with or without the leisure battery connected. I am finding my starter battery keeps draining. The only thing bugging me is, the red smart alternator cable is connected but I think I may not have a smart alternator, would this be my problem. Thanks
Hi, Thank you for your message! 😊 Please contact us at support.ctek.com/ or email us at support@ctek.com and we will help you further. Have a great day! ☺
Hi I have the 250 se connected and 120 and a solar panel on the roof which is no currently connected, but the 250 SE is showing that solar panel is receiving sun and charging the reserve battery. Definitely I haven’t connected the panel yet. Can you help me
Hej, Jag planerar att installera D250SA i en husvagn och har följande frågor: 1. Är det korrekt att koppla +IN till pin 9 (s.k. bilbatteri+ direkt) på 13-poligt kontakt? 2. Är det korrekt att koppla s.k. Smart Generator röd kabel till pin 10 (s.k. bilbateri+ via relä, dvs. på när motorn är igång) på 13-poligt husvagnskontakt? 3. Om två övanstående är JA, finns det någon nytta att installera SMARTPASS 120S också? (med tanke på att max ström på 13-poligt kontakt för pin 9 och 10 är typ 15A) Mvh / Bart
Hej. Här kommer svar på dina frågor. 1. Ja, det är pin 9. 2. . Stämmer 3. Nej, det är ju ingen större mening. D250SA laddar med upp till 20A och det räcker och blir över till de ca 15A som kan gå igenom pin 9 och 10. Lycka till Mvh CTEK Support
hiya. I have just had a ctek 250se fitted and all connections are correct. when the van starts , all that flashes is the green light. at no time does the yellow light show to indicate service battery charging.However, the twin lead acid battery charge windows show green as fully charged. Does the ctek only show the yellow charging light once the battery capacity has been lowered? my kit is part of a camper van conversion
Hi. If the green power LED is blinking, this means that there is no contact between the battery and the charger. Please check the fuses between the charger and the service battery. The yellow diod indicating "charge" will be lit when charging. When the battery is fully charged it will go black. I hope this will help you. Best regards CTEK Support
On my batteries,the tell tale shows green when they are fulyly charged and black when they aren't.theres a battery condition information sticker on the top of thebattery that shows that green is fully charged and black indicates that it needs charging. If the batteries are fully charged would that mean the green light on the charger was showing it onstand by.
Just to be sure, if you are using the D250SE without the Smartpass, the charging profile for Lithium is set by connecting the to black wire to the +ve terminal of the L:ithium service battery? Cheers ;)
Hi, Thank you for your message! 😊 Yes that is correct If you have further questions, please contact us at support.ctek.com/ or email us at support@ctek.com and we will help you further. Have a great day! ☺
Hi. Yes you can use them together. Please see some different wiring diagrams here: www.ctek.com/business-uk/customer-guides/dc-dc-support#d250sdual. Good luck. Best regards CTEK Support
Hi there, I have 2 CTEK chargers (1x D250SE, 1x D250SA) installed in different cars, both with a solar panel connected. After I had a start battery go flat I did some investigation and noticed that the CTEK charger is discharging the start batteries intermittently. (You have to watch it for a while to catch it doing it, but it seems to happen more frequently when the solar panel is partially shaded) I have spoken to CTEK tech support and they're not able to give me a suitable response why this would occur. Just wondering if anyone else has experienced this?
Hi, Thank you for choosing CTEK. It can be a bit tricky to find out the problem with this information, but lets try some basic. Please check that the thin red cable (for Smart alternator) is connected to ignition (KL15+) I know that In some cases there has been a lack of reverse voltage diode on the solar panels and then the starter battery can be drained, because there is always a small voltage on the solar panel input on D250 that seems to come from the starter battery. If it's dark outside and the reverse voltage diode is missing the power goes out into the solar panel and drains the starter battery if the reverse voltage diode is missing. If this doesn't work - please send your question to info@ctek.com for a better dialogue. Good Luck. Best regards CTEK Support
Hi, the black one should be connected to the positive pole on the starter battery or the service battery (doesn't matter which) When that is done you will have the lithium setting. Best regards CTEK Support
nice video. one question, do you know if that CTEK dc/dc battery charger also works as a battery splitter? so does it prevent the starter battery from going flat while the engine is not running or does it need a separate splitter?
Hi, Thank you for your message! 😊 We used the D250SE and the Smartpass 120S If you have further questions, please contact us at support.ctek.com/ or email us at support@ctek.com and we will help you further. Have a great day! ☺
Hi, The black wire on the SMARTPASS120S should be connected to the positive pole on the lithium battery in order to get the lithium charge program activated. Best regards CTEK Support
@@CTEKBatteryChargers Hi. I had the same question. But could you please confirm that it is correct. The black wire of the D250SE should go to +ve for Li, but the manual indicates the small black cable on the 120S goes to -ve. Would you please check. Thanks, Mike.
@@malteruthemeyer Hi Mike. We have checked the manuals available on the web. From what we can find, the only recommendation to connect the black cable to - on the battery, is when you want to choose AGM charge algorithm. For Lithium, the black cable should be connected to the + pole on the battery. I hope this helps. Best regards CTEK Support
I am a bit confused. I just bought a Dual 250SE for a simple split charge system. I have also bought a 100A LiFePo4 leisure battery. The car has a 120A conventional alternator. For lithium charging I need to connect the thin black selector wire to 12+. Which 12+? Can I connect it to the leisure battery or do I need to connect it to the starter battery? My setup is no fancy camper. Just a VW Multivan with sleeping possibilities. I am using the leisure battery only to run the Eberspächer diesel heater and a fridge.
Hi, To activate the Lithium mode, you connected the battery selector wire (black) to battery positive (+12V) can be starter battery or Service battery. You find this connection on D250SE input terminal or output terminal. Best regards CTEK Support
I’m having problems too with this, I don’t think I have a smart alternator as the voltage sits at 14.5 with engine running; which points to it being a standard alternator, but I’ve done the black wire to +12v and my lithium isn’t charging when I drive, at all. What could be the issue? It’s a fresh install with a. New Lifepo4 200ah. Would be a real shame to have to return the charger
@@MorfMusic Hi, Please consult your car dealer regarding the alternator type, if having doubts regarding type. When installing the D250SE please ensure using recommended wire dim. Fuses and we can recommend to watch our video instructions on the subject. If you still have problems, please let us know. info@ctek.com. Best regards CTEK Support
Hi, I am happy to explain! What do you want to know? How it works or how to activate it? or something else? Just let me know and I will do my best to help. Best regards CTEK Support
@@KR7PT Hi, it needs to be connected to the starter battery to have the correct voltage levels to start and stop the unit. By connecting the red cable to ignition it will work together with smart alternators - but you still need the starter battery. Best regards CTEK Support
@@CTEKBatteryChargers I understand that, but a 20A draw over roughly 12m total cable (6m run, 6m return or chassis return) the voltage drop is very small, given the cut in voltage is 13.1V, voltage drop roughly 0.4V over that distance, would I still need to run the cable all the way to the starter or just use the terminal on the CTEK?
@@CTEKBatteryChargers by that I mean the black selector cable, not the red ignition cable. I don't have a smart alternator so I will be blanking off the ignition wire.
Does the little red wire that needs to be connected to a permanent positive on the D250SE been connected to the lithium Auxiliary battery or the lead acid vehicle start battery.
Hi! Thank you for reaching out! 😊 The red thin cable should only be connected to a connection point where there is 12 volts when the vehicle's ignition is switched on. That signal is called (KL 15+) and can be found on the voltage supply to the radio or other equipment wish working when the ignition is on. Please let us know if you have any other questions 😊
@CTEK Battery Chargers thank you for the clarification, I had solar plugged into the ctek d250se for 2 hours then after disconnecting the solar input the ctek is still showing the solar led and the A led illuminated 1 hour later. Is this a fault of some sort with the ctek. ? Thanks
What size of shunt do you recommend?
Is there a video for the D250se installed without the same pass?
I have a 160amp alternator and I've never been able to get decent output from the 120S and 250SE combined. Best I've ever gotten was 35 amps going to my service batteries.
All connections are 1/0 full copper connections, several in line fuses etc.
Tried to bypass fuses to see if they were the culprits, they were not.
Hi, We will try to find out why you haven't got more than 35A. Is the cables sized according to recommendation? I guess this can be a long conversation to find the reason, so I recommend you to contact us at support@ctek.com for better help. Best regards CTEK Support
what size are the lug terminals on the smart pass
I have loved my CTEK D250SA for the last 4 years. However, CTEK haven't kept up with technology or user demand. Their D series chargers max out at 20amps unless you get a smart pass that apparently gives up to 120amps from alternator (too much for most systems). There's no Bluetooth connection or app for monitoring the charge status, you have to buy a wall mounted system monitor for that. I have very very reluctantly gone over to Victron. I would have loved to upgrade my D250SA to maybe a D250SE if it had Bluetooth monitoring, a 30-50 amp charge profile and access to settings which can be precisely set for your specific system. Modern Motorhomes/RVs demands have outpaced CTEK.
Hi! :)
Thank you for sharing, I will pass this on to the right department.
Hi, Thanks for the Video. I would ask you if it is possible to connect the starter battery to the service battery with a 500 A Switch so that is still possible to start the engine when the starter battery failed or in case I need to use the winch. Thanks Luca
Hi, if you have the D250SA or D250SE and the SMARTPASS 120S the SMARTPASS120S will automatically connect the starter battery and the service battery automatically if needed - you do not need to do anything to have that extra start help. Best regards CTEK Support
Hi, I have the D250SE and the wiring diagram shows the service battery negative returning to the starter battery negative with a ground halfway along. Does the service battery need to be grounded and returned to the starter negative or can it be one or the other? Also there is no recommended wire size, can I assume that it should be the same as the wire from the starter battery to the D250SE?
Hi, The connection is showing a common connection (to the chassis) the service battery can be earthed / grounded to the chassis.
The earth / ground cable should be the same thickness as the starter battery to D250.
Best regards CTEK Support
Is it possible to use ignition wire with standard old alternator, just to have manual control for DCDC turning on/off?
Hi,
Thank you for reaching out! 😊
Please contact us at support.ctek.com/ or e-mail us at support@ctek.com and we'll help you from there.
Have a nice day! 😊
Hello, I am changing to lithium battery.Do I attach the small black wire to the output service battery post on the cetek d250se unit now?.or the positive post on the lithium battery itself?..
Hi! Either of the options will work as long as it is a constant 12V feed.
Hi, just installed Ctek B250se. Without connecting the ignition wire. When i start the van the yellow bottom led lights up and the bottom right yellow led lights up. And the voltage on the leisure battery increases. This would suggest the Ctek is charging . So it seems to work without the ignition wire connected , Even though i have been told i have a smart alternator. My thinking is the smart alternator sees the starting battery as a bit low and therefore starts charging it. Then the Ctek sees the higher voltage and starts doing the DC to Dc to the leisure battery and therefore pulling the starter voltage down enough for the smart alternator to keep supplying a higher voltage and therefore current to the start battery and leisure battery. So i am struggling to understand what situation will cause the smart alternator to stop charging and therefore not trigger the ctek to do DC to DC until the leisure battery is charged. Also when the engine is switched off, the Ctek sees the drop in voltage and switches off the DC to DC conversion and both LED go out.. So it all seems to function as expected without the ignition wire connected?
Hi, Even when the ignition wire is not attached, the D250SE will work. It will start as soon as the voltage is higher than 13,1V and shut down when the voltage is lower than 12,8V The problem when you have a smart alternator is that the ignition is turned off as soon as there is power enough in the battery to use for the electronic components. This can happen many times every second, and this makes the D250SE start up and close down often. even if the voltage in the battery is raised it is not charged as effectively as possible. If you have a start stop vehicle I recommend you to attach the ignition wire. Best regards CTEK Support
Hello.I have one question and please help me to understand it .I bought CTEK D250SE for my camper. And now I have to choose battery for my system.when I read recomedations of manifactures they said that below 100 ah you need D250SE with SMARTPASS. Cant i have only D250SE for 110 ah battery system?
Hi, Thank you for choosing CTEK! You can definitely have the D250SE for a 110Ah battery. BUT!... if you drain your battery completely and you want it charged up fast, the 20A from the D250SE might be too little - and if so - we recommend you to have the SMARTPASS120S as well. But it all comes to how drained the battery gets before you can charge and how many consumers active whilst charging. For more info - contact support@ctek.com Best regards CTEK Support
Hi there, I just wanted to check if the Ctek 250SE and 120 Smartpass are compatible with Lithium Iron Phosphate batteries. Some web based info suggest not but having bought both the 250 and 120 from Ctek both user manuals state they do. Sorry to bother you but could you confirm. Thanks InTransit
HI. The D250SE and the Smartpass 120S are compatible with Lithium (Li FePO4) batteries. Earlier variants is not. Best regards CTEK SUPPORT
I'm having trouble with my d250se at the moment, my alternator is giving out 14.5v across starter battery when the ctek isn't connected, as soon as I connect the ctek back up, the voltage across my starter battery drops to 12v, this is with or without the leisure battery connected. I am finding my starter battery keeps draining. The only thing bugging me is, the red smart alternator cable is connected but I think I may not have a smart alternator, would this be my problem. Thanks
Hi,
Thank you for your message! 😊
Please contact us at support.ctek.com/ or email us at support@ctek.com and we will help you further.
Have a great day! ☺
Hi I have the 250 se connected and 120 and a solar panel on the roof which is no currently connected, but the 250 SE is showing that solar panel is receiving sun and charging the reserve battery. Definitely I haven’t connected the panel yet. Can you help me
Thank you for your message.
Please contact us at support.ctek.com/ or e-mail us at support@ctek.com so we can help you from there.
Have a nice day! 😊
Hej,
Jag planerar att installera D250SA i en husvagn och har följande frågor:
1. Är det korrekt att koppla +IN till pin 9 (s.k. bilbatteri+ direkt) på 13-poligt kontakt?
2. Är det korrekt att koppla s.k. Smart Generator röd kabel till pin 10 (s.k. bilbateri+ via relä, dvs. på när motorn är igång) på 13-poligt husvagnskontakt?
3. Om två övanstående är JA, finns det någon nytta att installera SMARTPASS 120S också? (med tanke på att max ström på 13-poligt kontakt för pin 9 och 10 är typ 15A)
Mvh / Bart
Hej. Här kommer svar på dina frågor.
1. Ja, det är pin 9.
2. . Stämmer
3. Nej, det är ju ingen större mening. D250SA laddar med upp till 20A och det räcker och blir över till de ca 15A som kan gå igenom pin 9 och 10.
Lycka till
Mvh CTEK Support
hiya. I have just had a ctek 250se fitted and all connections are correct. when the van starts , all that flashes is the green light. at no time does the yellow light show to indicate service battery charging.However, the twin lead acid battery charge windows show green as fully charged. Does the ctek only show the yellow charging light once the battery capacity has been lowered? my kit is part of a camper van conversion
Hi. If the green power LED is blinking, this means that there is no contact between the battery and the charger. Please check the fuses between the charger and the service battery. The yellow diod indicating "charge" will be lit when charging. When the battery is fully charged it will go black. I hope this will help you. Best regards CTEK Support
On my batteries,the tell tale shows green when they are fulyly charged and black when they aren't.theres a battery condition information sticker on the top of thebattery that shows that green is fully charged and black indicates that it needs charging. If the batteries are fully charged would that mean the green light on the charger was showing it onstand by.
@@parkay3560 Hi, If the batteries are fully charged the green light "Power" will have a steady light. Best regards CTEK Support
Is the smartpass suitable for lithium with the se model dc dc charger
The Dual 250SE is compatible with lithium. you need to connect the black wire to a constant live 12V.
Just to be sure, if you are using the D250SE without the Smartpass, the charging profile for Lithium is set by connecting the to black wire to the +ve terminal of the L:ithium service battery? Cheers ;)
Hi,
Thank you for your message! 😊
Yes that is correct
If you have further questions, please contact us at support.ctek.com/ or email us at support@ctek.com and we will help you further.
Have a great day! ☺
hello, can I a use CTEK d250se and a CTEK MXS 10 together, and do you have a wiring diagram , thank you
Hi. Yes you can use them together. Please see some different wiring diagrams here: www.ctek.com/business-uk/customer-guides/dc-dc-support#d250sdual. Good luck. Best regards CTEK Support
Hi there, I have 2 CTEK chargers (1x D250SE, 1x D250SA) installed in different cars, both with a solar panel connected. After I had a start battery go flat I did some investigation and noticed that the CTEK charger is discharging the start batteries intermittently. (You have to watch it for a while to catch it doing it, but it seems to happen more frequently when the solar panel is partially shaded) I have spoken to CTEK tech support and they're not able to give me a suitable response why this would occur. Just wondering if anyone else has experienced this?
Hi, Thank you for choosing CTEK. It can be a bit tricky to find out the problem with this information, but lets try some basic. Please check that the thin red cable (for Smart alternator) is connected to ignition (KL15+) I know that In some cases there has been a lack of reverse voltage diode on the solar panels and then the starter battery can be drained, because there is always a small voltage on the solar panel input on
D250 that seems to come from the starter battery. If it's dark outside and the reverse voltage diode is missing the power goes out into the solar panel and drains the starter battery if the reverse voltage diode is missing. If this doesn't work - please send your question to info@ctek.com for a better dialogue. Good Luck. Best regards CTEK Support
So if you have a lithium battery the red has to be connected to a live feed and the black one ?
Hi, the black one should be connected to the positive pole on the starter battery or the service battery (doesn't matter which) When that is done you will have the lithium setting. Best regards CTEK Support
@@CTEKBatteryChargers This is what I needed to know. And how to find the right place to connect to the ignition source. Thanks!
Hi CTEK. I’m just wondering if you can install the CTEK into a bus bar such as the Lynx Distributor 1000 DC. Will it still work properly?
*the CTEKD250SE that is
Hi!
Thank you for reaching out!
Please send this question to support@ctek.com
nice video. one question, do you know if that CTEK dc/dc battery charger also works as a battery splitter? so does it prevent the starter battery from going flat while the engine is not running or does it need a separate splitter?
The Dual 250 works as a splitter.
Hi why do you use a 120s and a 120se together ?
Hi,
Thank you for your message! 😊
We used the D250SE and the Smartpass 120S
If you have further questions, please contact us at support.ctek.com/ or email us at support@ctek.com and we will help you further.
Have a great day! ☺
have you any workshop in Örebro that w can get help their?
Hi, No. The workshop is at our headquarter in Vikmanshyttan. If you need help - send an e-mail to info@ctek.com. Best regards CTEK Support
What is a permanent live feed in the car
HI. Permanent live feed is all the electronic components active even when the vehicle is parked. Best regards CTEK Support
Hi a have been given a 36 v solar pannel will this work with this kit
Maximum is 23V.
@@ounnipillai3289 even with the smartpass?
Where do I connect the black wire when charging lithium batteries on the smart pass
Hi, The black wire on the SMARTPASS120S should be connected to the positive pole on the lithium battery in order to get the lithium charge program activated. Best regards CTEK Support
@@CTEKBatteryChargers Hi. I had the same question. But could you please confirm that it is correct. The black wire of the D250SE should go to +ve for Li, but the manual indicates the small black cable on the 120S goes to -ve. Would you please check. Thanks, Mike.
@@malteruthemeyer Hi Mike. We have checked the manuals available on the web. From what we can find, the only recommendation to connect the black cable to - on the battery, is when you want to choose AGM charge algorithm. For Lithium, the black cable should be connected to the + pole on the battery. I hope this helps. Best regards CTEK Support
I am a bit confused. I just bought a Dual 250SE for a simple split charge system. I have also bought a 100A LiFePo4 leisure battery. The car has a 120A conventional alternator.
For lithium charging I need to connect the thin black selector wire to 12+. Which 12+?
Can I connect it to the leisure battery or do I need to connect it to the starter battery?
My setup is no fancy camper. Just a VW Multivan with sleeping possibilities. I am using the leisure battery only to run the Eberspächer diesel heater and a fridge.
Hi,
To activate the Lithium mode, you connected the battery selector wire (black) to battery positive (+12V) can be starter battery or Service battery. You find this connection on D250SE input terminal or output terminal. Best regards CTEK Support
I’m having problems too with this, I don’t think I have a smart alternator as the voltage sits at 14.5 with engine running; which points to it being a standard alternator, but I’ve done the black wire to +12v and my lithium isn’t charging when I drive, at all. What could be the issue? It’s a fresh install with a. New Lifepo4 200ah.
Would be a real shame to have to return the charger
@@MorfMusic Hi, Please consult your car dealer regarding the alternator type, if having doubts regarding type.
When installing the D250SE please ensure using recommended wire dim. Fuses and we can recommend to watch our video instructions on the subject. If you still have problems, please let us know.
info@ctek.com. Best regards CTEK Support
Why does nobody explain the lithium mode more?
Hi, I am happy to explain! What do you want to know? How it works or how to activate it? or something else? Just let me know and I will do my best to help. Best regards CTEK Support
@@CTEKBatteryChargers is it activated by a constant 12v signal, as in, can it be wired directly to the alternator input?
@@KR7PT Hi, it needs to be connected to the starter battery to have the correct voltage levels to start and stop the unit. By connecting the red cable to ignition it will work together with smart alternators - but you still need the starter battery. Best regards CTEK Support
@@CTEKBatteryChargers I understand that, but a 20A draw over roughly 12m total cable (6m run, 6m return or chassis return) the voltage drop is very small, given the cut in voltage is 13.1V, voltage drop roughly 0.4V over that distance, would I still need to run the cable all the way to the starter or just use the terminal on the CTEK?
@@CTEKBatteryChargers by that I mean the black selector cable, not the red ignition cable. I don't have a smart alternator so I will be blanking off the ignition wire.
Does the little red wire that needs to be connected to a permanent positive on the D250SE been connected to the lithium Auxiliary battery or the lead acid vehicle start battery.
Hi! Thank you for reaching out! 😊
The red thin cable should only be connected to a connection point where there is 12 volts when the vehicle's ignition is switched on. That signal is called (KL 15+) and can be found on the voltage supply to the radio or other equipment wish working when the ignition is on.
Please let us know if you have any other questions 😊
@CTEK Battery Chargers thank you for the clarification, I had solar plugged into the ctek d250se for 2 hours then after disconnecting the solar input the ctek is still showing the solar led and the A led illuminated 1 hour later. Is this a fault of some sort with the ctek. ? Thanks