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The manual have specifications but there is not specification as you have mentioned
Bars show the level of battery strength but while charging there is no visible activity while changing. Bars only show strength of battery. 253 are VOLTS . on left incomming VOLTS and on right outgoing VOLTS. on UPS mode it normally 230 volts.
package show that this has been imported by www.rni.com.pk from china. but on the website i did not find such informations.
I think earlier some good quality UPS/INVERTERS were imported but now with increase in popularity company has imported low quality BRANDLESS inverter by labelling as HOMAGE.
You need to contact the dealer who sold you the unit. or call the homage numbers on the pamphlet and ask them about the charge indicator. This seems to be a newer model. I did not see a LCD model when I was shopping in Jan.
or as cq914 pointed out the battery indicator goes up and down while charging.
I received a manual with my homage that lists the specifications, operation procedure, installation, troubleshooting, proper battery installation etc. I do not know why they did not give you a similar manual. Ask the dealer about the manual too.
Like Pakistan the plastic box is a generic box with homage label. It is the circuitry inside that matters.
Also, I am not sure if the LCD is working correctly if it is showing you 253 incoming volts as voltage supplied by WAPDA in Pakistan is 220 V. 253 V will fry your electronics.