Hi . I have an AC180 and a Charger1 set up in my van , the problem I am having is that every time I am charging with the dc input, the 12v dc input fuse blows when I plug anything to the dc output. the charger will keep charging as long as nothing is plugged into output side. 12v dc output works perfect . All else works as it should . Any suggestions?
1 Like
Where is the DC input fuse located in the wiring of the Charger 1? Are you using the OEM provided input cable with the circuit breaker?
If I assume what your setup is. Is the fuse that blows near the start battery that provides power to the Charger1. If so, what are its Amps rating and type?
You need at least a 60A fuse and of the Midi Type. Blade fuses are typically not much good over 30A.
Also, what setting are you using for the AC180s charging mode, Silent, Standard or Turbo. This setting not only limits the AC charging, but also the DC side.
As I normally only ever charge in Silent mode, this lowers the power draw of the AC180 on the charging source. (I rarely need to charge quickly and Turbo mode should be used sparingly to maximise the AC180’s battery life.)
It would also help if you noted what your Charger 1 settings are, i.e. is it set in the App to AC180 or are you using custom mode? and, if so at what voltage.
1 Like
Question 1 , yes I am using all the equipment provided with the unit.
The charger is approx. 24 in. from vehicle battery to the 60a breaker provided then 18in. to charger
AC180 is set to standard mode
Charger is set with app to 27v on AC180 setting
1 Like
Just to clarify the fuse I am referring to is the small 10a fuse on the circuit board right beside the dc input jack, I believe it says F2 beside it
Hello,
Thank you for your feedback. I would like to confirm the following regarding your situation:
- Are all your branch fuses non-functional, or is it just the single F2 fuse that has blown?
- You mentioned that charging can continue when the output is not connected to load C1. Has the breaker for C1 also tripped? If C1 is properly connected to the positive and negative terminals of the battery, theoretically, there should be no interaction with the single F2 branch unless C1 is not connected to the positive and negative terminals of the starting battery.
Additionally, did the fuse blow after charging for a period of time, or did it blow immediately?
I look forward to your response so we can further analyze the issue.
Thank you!
1 Like
1 . To the best of my knowledge only the 1 fuse blows.
2. No only one fuse blows , I can still charge thru AC input . it appears only the DC charging port is affected . The unit can be charged from solar power and C1 when fuse is intact , but as soon as DC output is connected any DC input charging is stopped.
I left it charging from C1 for several minutes while I did other things , then plugged into DC output , whereas DC charging ceased. Other than this unit works great.
1 Like
Hello,
I would like to confirm whether you connected the negative terminal of the C1 input line to the negative terminal of the starting battery, or to the negative terminal of the metal bracket inside the vehicle?
Additionally, is the 12V output you are using the cigarette lighter socket? You haven’t connected the C1 and the 12V output in parallel to charge the AC180, have you?
If neither of these situations applies, I can’t think of any other reasons that could cause a short circuit. I recommend that you visit a repair shop to check if there are any issues with the wiring.
Thank you for your cooperation. If you have any other questions, please feel free to contact us!
Negative terminal of C1 is connected direct to van body. 12v output is cigarette lighter socket provided.
No only connection for charging has been made thru provided ports, not connected in parallel. Does the ground lug on side of unit need to be connected to ground surface somewhere?, as you seem to think this may be a grounding problem.
I live in southern Ontario , can you suggest a Bluetti specific repair centre in my region.
Thanks Bob
Connecting directly to the positive and negative terminals of the starting battery should almost never result in a short circuit due to incorrect wiring. Therefore, I suggest you try connecting the negative terminal directly to the starting battery and see if the issue persists.
If the problem continues, I recommend visiting an auto repair shop for further inspection to ensure everything is functioning properly.
Depending upon make and model of vehicle, not all panels make a good earth/ground connection. There are also implications relative to smart alternators to consider. As @BLUETTI stated, direct to battery is the safest, surest connection.