Inverter 60 to 80Amps current draw, on a leisure battery?

[Spriddler]

A post in another thread about the inconvenience of testing the health of a leisure battery by carrying out a continuous load test for a period of time got me thinking. From info on the web it seems that typically a relatively low power 1000W 12v DC to 230V AC inverter draws around 60 to 80 amps but I consider that to be a high current for a leisure type battery which is generally recommended as being the most compatible with sustained low current drain equipment.
Or am I missing something?

 

[pappajohn]

That'll be why more than one battery is recommended for even a low power inverter.

 

[funflair]

As above, or LiFePO4 as they can handle much larger discharge.

 

[bigtwin]

A post in another thread about the inconvenience of testing the health of a leisure battery by carrying out a continuous load test for a period of time got me thinking. From info on the web it seems that typically a relatively low power 1000W 12v DC to 230V AC inverter draws around 60 to 80 amps but I consider that a high current for a leisure type battery which is generally recommended as being the most compatible with sustained low current drain equipment.
Or am I missing something?

You’re not wrong, if there’s an inverter in the system then, arguably, a drop type test may be considered a more representative test but would provide no information on the capacity of the battery.

However, in other cases (in reality, the majority of cases) a drop type test is not at all representative of usage. More importantly, the C20 (slow discharge) type test is the only way to understand if a battery has retained its nominal capacity.

It’s entirely possible that a leisure battery could ‘pass’ a drop test yet have very little capacity.

Ian

 

[JBob]

Watts is watts
at 1000w /12v it would be 83A if the inverter was running at full titty.

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