My invertor is a 3kw 24V Synerji Pro PSW SYSP3024-PR

I have been using it successfully with 2 x 2 No 105Ah 12v Lead GEL batteries for sometime but with the ramp up in load shedding these have lost their ability to hold a charge.

I replaced the batteries with 3 x 24V Lithium batteries (Valuetech LIFEPO4 4S1P1300WH)

When Eskom power is on and the batteries are fully charged, the Invertor display is showing the battery voltage is fluctuating from circa 25V to about 35V and the Invertor alarm is going off - two longish beeps. Not continuous but too often to be ignored. I suspect it warning of overcharging. I have checked the battery voltage with a multimeter and indeed the Invertor display is correct.

Obviously I am scared of damaging the batteries.

Even if the batteries are not at risk, the alarm noise is not something I can live with.

Any suggestions ?

Thanks

Richard 

 

9 hours ago, RPG said:

My invertor is a 3kw 24V Synerji Pro PSW SYSP3024-PR

I have been using it successfully with 2 x 2 No 105Ah 12v Lead GEL batteries for sometime but with the ramp up in load shedding these have lost their ability to hold a charge.

I replaced the batteries with 3 x 24V Lithium batteries (Valuetech LIFEPO4 4S1P1300WH)

When Eskom power is on and the batteries are fully charged, the Invertor display is showing the battery voltage is fluctuating from circa 25V to about 35V and the Invertor alarm is going off - two longish beeps. Not continuous but too often to be ignored. I suspect it warning of overcharging. I have checked the battery voltage with a multimeter and indeed the Invertor display is correct.

Obviously I am scared of damaging the batteries.

Even if the batteries are not at risk, the alarm noise is not something I can live with.

Any suggestions ?

Thanks

Richard 

 

Do some tests with only 1 battery at a time and see if you still get a voltage as high as 35V. This is something that needs urgent attention 

On 2023/03/27 at 9:10 PM, RPG said:

My invertor is a 3kw 24V Synerji Pro PSW SYSP3024-PR

I have been using it successfully with 2 x 2 No 105Ah 12v Lead GEL batteries for sometime but with the ramp up in load shedding these have lost their ability to hold a charge.

I replaced the batteries with 3 x 24V Lithium batteries (Valuetech LIFEPO4 4S1P1300WH)

When Eskom power is on and the batteries are fully charged, the Invertor display is showing the battery voltage is fluctuating from circa 25V to about 35V and the Invertor alarm is going off - two longish beeps. Not continuous but too often to be ignored. I suspect it warning of overcharging. I have checked the battery voltage with a multimeter and indeed the Invertor display is correct.

Obviously I am scared of damaging the batteries.

Even if the batteries are not at risk, the alarm noise is not something I can live with.

Any suggestions ?

Thanks

Richard 

 

how did you connect the batteries 

this inverter can only use 2 in line ie 24v

if you connect 3 inline you would get 36v but that isn't suitable for this inverter

 

if you want to add more batteries you must parralel strings of 2's

ie  you can have  2/4/6

and must always have 24v ie 2 in line