Inverter & Power consumption
- Thread starter technofast
- Start date
You might have already bought, but for others:
Exide (gqp 1450, better to reduce load to 600-700W and go for gqp 1125) seams to have better BMS, 15W stand-by 30W when trickle charging fully charged battery, their battery to main efficiency as per various youtube videos is around 87%, which is very good compared to Luminous, Microtek etc, battery by any good brand Luminous, Exide, Amron etc
You might have already bought, but for others:
Exide (gqp 1450, better to reduce load to 600-700W and go for gqp 1125) seams to have better BMS, 15W stand-by 30W when trickle charging fully charged battery, their battery to main efficiency as per various youtube videos is around 87%, which is very good compared to Luminous, Microtek etc, battery by any good brand Luminous, Exide, Amron etc
Last edited:
msvsme
Explorer
Let me explain my point of view.
1. When Electricity is on: In this state, battery will charge at around 200w (14.4v*15A). Plus, whatever load is connected to inverter will be fed directly from mains power (inverter connects mains to load directly).
2. When electricity is gone: inverter will turn on (with relay) and feed power from battery. Here, there is conversion loss.
Lead acid Battery charging has three stages: bulk, absorption and float. At float, battery charges at around 20w. So, if your battery is bad, then this stage will never reach and battery will always charge at 100-200w. If one cell is dead, then battery will boil and get warm.
So, there is loss in charging and discharging from transformer. Copper based transformer has lower loss compared to aluminium. But for your case this won't consume many units.
With the above knowledge, check how many units it consume to charge without connecting the load and see if the power settles down to float.
1. When Electricity is on: In this state, battery will charge at around 200w (14.4v*15A). Plus, whatever load is connected to inverter will be fed directly from mains power (inverter connects mains to load directly).
2. When electricity is gone: inverter will turn on (with relay) and feed power from battery. Here, there is conversion loss.
Lead acid Battery charging has three stages: bulk, absorption and float. At float, battery charges at around 20w. So, if your battery is bad, then this stage will never reach and battery will always charge at 100-200w. If one cell is dead, then battery will boil and get warm.
So, there is loss in charging and discharging from transformer. Copper based transformer has lower loss compared to aluminium. But for your case this won't consume many units.
With the above knowledge, check how many units it consume to charge without connecting the load and see if the power settles down to float.
rads
Forerunner
Hi
So im in a similar situation here.
I have a microteck 850 pure sinewave with invatubler it500 150ah batt ( both aged at 10y+) inverter has been repaired twice.
My recent reading show a 3+ kwh consumption at idle (no load) no less than 75watts always ( amciscience meter)
battcharging was not staying off for long, battery was quite warm, i had refilled the water about 30-45 days ago, had to redo it with apx 4l+ water last week.
Ovious conclusion was batt has gone bad, still i wanted more data, i gave it to a repair shop to test,
the load was lesser there, around 50-55watts when idle.
brought home a squarewave spare, this idles at 20-25 when done charging, not charhing too long as well. batt is not that warm as well.
So overall , im not sure where to go from here.
I have planned a bulb load test, to check the batt capacity .
@technofast what did you finally do ?
So im in a similar situation here.
I have a microteck 850 pure sinewave with invatubler it500 150ah batt ( both aged at 10y+) inverter has been repaired twice.
My recent reading show a 3+ kwh consumption at idle (no load) no less than 75watts always ( amciscience meter)
battcharging was not staying off for long, battery was quite warm, i had refilled the water about 30-45 days ago, had to redo it with apx 4l+ water last week.
Ovious conclusion was batt has gone bad, still i wanted more data, i gave it to a repair shop to test,
the load was lesser there, around 50-55watts when idle.
brought home a squarewave spare, this idles at 20-25 when done charging, not charhing too long as well. batt is not that warm as well.
So overall , im not sure where to go from here.
I have planned a bulb load test, to check the batt capacity .
@technofast what did you finally do ?