Mecer 2.4KVA 1440W Inverter

P

PVX

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Hi everyone

I bought a Mecer 2.4KVA 1440W Inverter with 2 x 100AH 12V Deep Cycle batteries 2 years ago. At the time I actually thought it was a lot more than I actually needed, since I only really power my TV and laptop.

I understand the batteries will degrade over time, but over the past few months this inverter will basically run for an hour before it starts beeping and I need to disconnect everything, and power the inverter off completely.

What puzzles me is that when the power comes back, the battery bar instantly jumps from 25% to the 75% mark.

Is this level of battery degradation normal? Is there any way to perhaps check if something else might be the matter? It just seems strange that the battery performance seemed to drop so quickly. I should be able to run for 8 hours and while I expect the batteries to degrade over time, 2 years later I dont even get 1 hour.

Thanks in advance guys.
 
PVX said:
Hi everyone

I bought a Mecer 2.4KVA 1440W Inverter with 2 x 100AH 12V Deep Cycle batteries 2 years ago. At the time I actually thought it was a lot more than I actually needed, since I only really power my TV and laptop.

I understand the batteries will degrade over time, but over the past few months this inverter will basically run for an hour before it starts beeping and I need to disconnect everything, and power the inverter off completely.

What puzzles me is that when the power comes back, the battery bar instantly jumps from 25% to the 75% mark.

Is this level of battery degradation normal? Is there any way to perhaps check if something else might be the matter? It just seems strange that the battery performance seemed to drop so quickly. I should be able to run for 8 hours and while I expect the batteries to degrade over time, 2 years later I dont even get 1 hour.

Thanks in advance guys.
Click to expand...

Yes
 
PVX said:
Hi everyone

I bought a Mecer 2.4KVA 1440W Inverter with 2 x 100AH 12V Deep Cycle batteries 2 years ago. At the time I actually thought it was a lot more than I actually needed, since I only really power my TV and laptop.

I understand the batteries will degrade over time, but over the past few months this inverter will basically run for an hour before it starts beeping and I need to disconnect everything, and power the inverter off completely.

What puzzles me is that when the power comes back, the battery bar instantly jumps from 25% to the 75% mark.

Is this level of battery degradation normal? Is there any way to perhaps check if something else might be the matter? It just seems strange that the battery performance seemed to drop so quickly. I should be able to run for 8 hours and while I expect the batteries to degrade over time, 2 years later I dont even get 1 hour.

Thanks in advance guys.
Click to expand...
You killed the batteries by allowing it to drop below 50%
 
PVX said:
What puzzles me is that when the power comes back, the battery bar instantly jumps from 25% to the 75% mark.
Click to expand...

Presumably it's just using voltage as a (rough) state-of-charge indicator.

One symptom of dying battery is that voltage increases rapidly under charging to "full", but doesn't actually absorb much current.
 
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