Hello guys
I have a UPS "Microtek" and a battery of 150AH Tobler
The problem is that the UPS shows me that the battery is charging, which the charging lamp winks, and it goes on for a long time without stopping the charging and when measuring the voltage it gives a reading of 14.5 volts.
When the recovery mode is in operation, the battery works for about 6 hours to load 300 watts to 400 watts.

Where is the bug and how can I fix it?
Does this harm the battery?

 

What is "Tobler"?
How old are the batteries and if heavily used do they need replacing?

 

If the battery terminals are actually at 14.5V but the capacity under load is roughly 10% of the rating, I’d say the battery is shot. The question is whether the UPS caused it to die prematurely due to overcharging.

 

From the charging voltage cut off of 14.5 volts I assume it is a 12 volt lead acid battery. A load of 400 watts at 12 volts is 400 /12 = 33.3 amps.
So for a 150 AH battery you can expect to get 150/33.3 = 4.5 hours (This is assuming 100% efficiency in the inverter. In practice it will be less.)
So if you are getting 6 hours from it it is working better than it should. (If the load was 300 watts then the calculation works out to 6 hours.

Les.

 

I did my math wrong and slipped a decimal. @LesJones got it right. I think I calculated the output current (assuming 120V) but that’s not relevant. The battery current is what matters.

 

What is "Tobler"?
How old are the batteries and if heavily used do they need replacing?

Sorry I means tubular
I've been using the battery for almost a year

 

From the charging voltage cut off of 14.5 volts I assume it is a 12 volt lead acid battery. A load of 400 watts at 12 volts is 400 /12 = 33.3 amps.
So for a 150 AH battery you can expect to get 150/33.3 = 4.5 hours (This is assuming 100% efficiency in the inverter. In practice it will be less.)
So if you are getting 6 hours from it it is working better than it should. (If the load was 300 watts then the calculation works out to 6 hours.

Les.

I'm not sure about the amount of the load but I think about 300 watts or 200 but not more than 400 watts.
I'm thinking that the fault of one of the battery cells but the performance of the battery is excellent so I expect there is a defect in the UPS that the charger sensor may be disrupted ...
I do not have experience in special electronic devices that contain microcontroller
If anyone has experience to help me

 

If the battery terminals are actually at 14.5V but the capacity under load is roughly 10% of the rating, I’d say the battery is shot. The question is whether the UPS caused it to die prematurely due to overcharging.

This is what I'm afraid of that battery crashes

 

...so I expect there is a defect in the UPS that the charger sensor may be disrupted ...

What exactly is your problem? The fact that it appears to be charging even though the voltage is at 14.5V? That's not unusual or cause for concern. It might be trickle charging, or completing the last stage of the bulk charge. I have a home security system with a battery backup and I bet if I checked the voltage right this instant it would be 14.5V±0.5V.

Does the owners manual suggest some behavior you are not observing?