Charger 1 location and distance

Product Discussion Accessories
1

@BLUETTI_CARE I installed the charger 1 in my coach near my circuit breaker panel using the supplied input cable and breaker from my starter battery. Then I ran the output 30 ft to the back storage bay where the AC300 resides. Hooked into PV DC1 input and switched to OTHER. I measure 56 volts at the PV connector Pins but the Bluetti is not picking up the charge .

Is there a distance limitation on the output cables BougeRV 30 Feet 10AWG Solar Extension Cable.

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2

As with any battery charger, no matter the source of input, the charger should be as close to the battery being charged as possible.
Your setup using the OEM input cable is good, your output is not the best option. According to my calculations a 56V @ 10A load over 30’ with 10AWG cable is around 0.6V. You should see a charge.
What is the voltage at the end of the cable near the AC300?

3

I would suggest you edit you post at the start and type @BLUETTI_CARE as the first entry, this will tag Bluetti with your issue.

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@Mandp The voltage was 56v at pins on the PV connection for DC1. DC2 I plan to use for solar on the roof of the RV.

5

I guess the only other questions I can think of are,

  1. What is the starter battery voltage?
  2. Was the vehicle running?
  3. Does your alternator have enough spare output?

    If you have solar, try in both inputs to make sure they are working in that mode.

    P.S. I assume your coach is a 24V system?
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6

Hi @vescio, We are more than happy to assist you.

As @Mandp mentioned, please provide more specific information. We believe this issue may be related to the vehicle’s voltage. Did you start the vehicle while charging? Could you record a video of the charging process, upload it to a cloud drive, and then share it with us?
Please also click the “!” icon in the top-right corner of the app to check the error code.

Additionally, please ensure proper grounding during installation. We have attached a grounding diagram for your reference.

charger1 schematic diagram
charger1 schematic diagram1190×1683 129 KB

7

30 ft of 10 AWG isn’t usually long enough to stop it from working outright — 10 AWG has pretty low resistance but you will get some voltage drop, especially when the charger is actually pushing current instead of you just measuring open-circuit voltage. That drop could be enough that the Bluetti sees the input sagging below its acceptable PV window and simply won’t engage.
A couple things to check:
Make sure polarity is correct at the Bluetti end (they’re picky).
Try measuring voltage under load (while it’s trying to charge), not just open circuit that’s where you’ll see if the run is too long/thin.