- May 24, 2022
- 54
- 86
- Funster No
- 88,865
- MH
- Converted VW Crafter
Hi guys,
We have 2x100Ah lithium in parallel. Therefore 200Ah at 12v
No inverter but looking to get one and maybe something like the Renolgy 3000W.
I am trying to calculate usage e.g. how long can I cook on the airfryer, as an example.
Thinking of getting this one: https://ninjakitchen.co.uk/product/...ti-cooker-oven-air-fryer-sfp700uk-zidSFP700UK
It's rated at 1780W
Therefore I am using this math:
Watt-hours to Amp-hours = Wh / V = Ah
= 1780 / 12 = 148Ah
Inverter inafficency = 15%.
= 148Ah + 15% = 170Ah
Am I right? A 1780W appliance, like this air fryer, would cook for an hour and take approximately 170Ah of my 200Ah. This seems like a lot. And the average time off-grid the wife and I do is four days. So, ignoring Solar or any EHU, we can only use the Airfryer for about an hour and a half. Maybe 3 or 4 meals?
I also understand that the air fryer may not use that power the whole time, but measuring the one we have at home does. We used a plug with a meter—don't ask.
Is my maths correct?
Anyway, sorry to ramble. And thanks.
Danny
We have 2x100Ah lithium in parallel. Therefore 200Ah at 12v
No inverter but looking to get one and maybe something like the Renolgy 3000W.
I am trying to calculate usage e.g. how long can I cook on the airfryer, as an example.
Thinking of getting this one: https://ninjakitchen.co.uk/product/...ti-cooker-oven-air-fryer-sfp700uk-zidSFP700UK
It's rated at 1780W
Therefore I am using this math:
Watt-hours to Amp-hours = Wh / V = Ah
= 1780 / 12 = 148Ah
Inverter inafficency = 15%.
= 148Ah + 15% = 170Ah
Am I right? A 1780W appliance, like this air fryer, would cook for an hour and take approximately 170Ah of my 200Ah. This seems like a lot. And the average time off-grid the wife and I do is four days. So, ignoring Solar or any EHU, we can only use the Airfryer for about an hour and a half. Maybe 3 or 4 meals?
I also understand that the air fryer may not use that power the whole time, but measuring the one we have at home does. We used a plug with a meter—don't ask.
Is my maths correct?
Anyway, sorry to ramble. And thanks.
Danny