I have this battery level indicator but it shows the wrong readings, because after a few days of running the indicator did not reduce any bar, it still showed 4 bars, but all of sudden the electrical motorbike slowed down significantly due to low battery level, but the indicator still showed 4 bars, my electrical motorbike information: 5 acid batteries, each one is 12v, total 60V, battery level indicator is suitable for 60v configuration.

 

Unless you can post (or link to) a schematic of the battery level indicator, diagnosis of the problem will be no more than guess-work.
Even knowing the solution, do you have experience with repairing electronics?

 

Unless you can post (or link to) a schematic of the battery level indicator, diagnosis of the problem will be no more than guess-work.
Even knowing the solution, do you have experience with repairing electronics?

this indicator is from china, they tend to hide the datasheet, i cannot find it in the internet.

 

In the absence of a datasheet, can you post a link to the indicator module and/or sharply-focussed pictures of its front and back?

 

In the absence of a datasheet, can you post a link to the indicator module and/or sharply-focussed pictures of its front and back?

View attachment 1741255787493.jpeg

 

What are the markings on U1?

 

What are the markings on U1?

what is U1?

 

It's the 16-legged integrated circuit labelled U1, on the left in your pic.

 

It's the 16-legged integrated circuit labelled U1, on the left in your pic.

I dont know , they probably hide the characters.

 

Sorry, I can't help any further.

 

“Fuel gauge” displays must be calibrated against the particular battery capacity they are monitoring.
Was that done?

 

“Fuel gauge” displays must be calibrated against the particular battery capacity they are monitoring.
Was that done?

really? how to calibrate?

 

How to do it...geez, everyone has different ways to write into the calibration registers, and if the vendor didn't provide you with the details, I can't either.
That is the problem of acquiring gadgets without documentation, the norm of low-cost gadgets.
Besides I ignore whether they are only doing a simple voltage reading and via a lookup table performing the bargraph function, or if they are really computing amp-hours, the accurate way.

 

How to do it...geez, everyone has different ways to write into the calibration registers, and if the vendor didn't provide you with the details, I can't either.
That is the problem of acquiring gadgets without documentation, the norm of low-cost gadgets.
Besides I ignore whether they are only doing a simple voltage reading and via a lookup table performing the bargraph function, or if they are really computing amp-hours, the accurate way.

Poor me, now I cannot know the correct battery level, all readings now are just unreliable.

 

Do you have User manual you can share with us?

 

Do you have User manual you can share with us?

I dont have, just bought it from spare parts stores, China tends to hide every information, quite selfish.

 

Maybe you find similar product user manual?