How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Russell H. Your Own Question
Russell H.
Russell H., Service Technician
Category: Electrical
Satisfied Customers: 10789
Experience:  Educated decades ago in electrical quantities and devices, I have practiced professionally in the field ever since.
Type Your Electrical Question Here...
Russell H. is online now
A new question is answered every 9 seconds

Need to ask about my Solar PowerHub 1800? My unit is

Customer Question

Need to ask about my Solar PowerHub 1800? My unit is displaying code EO5 and alarming- AC blue light is on. The battery voltage is low - below 10.5V. The Solar controler input voltage is about 20V and controler output
JA: Sometimes things that you think will be really complicated end up being easy to fix. The Marine Electronics Specialist I'm going to connect you with knows all the tricks and shortcuts. Is there anything else the Marine Electronics Specialist should be aware of?
Customer: I was not finished- the output voltage of the controler is 0 Volts. Why is this
Submitted: 10 months ago.
Category: Electrical
Expert:  Russell H. replied 10 months ago.

Hi, thank you for contacting My name is Russell. I will do my best to provide the right answer to your question.

Error E05 matches what you have described: it means the internal battery is at a low level (or if it is not defective, it is nearly discharged.)

Depending upon whether the PowerHub merely needs to be supplied more power, and also upon whether it is still new enough to be within warranty coverage, it either needs:

1. to be supplied with more power to charge up the internal battery, or,

if it is at least 1 1/3 years old,

2. it needs to be serviced, to have the internal battery replaced, perhaps, owing to the fact that rechargeable batteries do eventually fail... though lead-acid batteries may have other problems than simply 'failed', other technologies of rechargeable do fail, period, after a period of at least 1 1/2 years roughly.

So I recommend considering whether it is new enough to be covered by warranty before opening its case (since opening the case voids the warranty coverage) and then if it isn't, examining the battery, and its connections, and considering whether it is likely to be the battery, the connections, or the charger circuits, that are at fault. It is surely one of those, I think, with an E05 Battery Low error showing on it.

If this answers your question, please rate my answer. A five-star rating would be appreciated!

If you need more info, for instance as to whether to get a replacement battery, or if you have any comments, use Reply To Expert to respond.


Related Electrical Questions