When it comes to off-grid systems, choosing the right inverter size is crucial to ensure that your appliances function properly without damaging your batteries. The size of the inverter you need depends on the number and type of appliances you want to use, as well as the battery size.
For small items such as laptops, TVs, and lights, a small-sized inverter in the 300-600 watt range is often enough. However, many people wonder if they can run power-hungry items such as air conditioning, kettles, toasters, and coffee machines. The short answer is yes, but there are a few key considerations.
While you can run heavy users on a larger off-grid system, they require a substantial inverter, as well as batteries that can hold enough stored energy to power the appliances. In a caravan or camping situation, the battery storage is often limited to size and space, and the system is also 12-volt, which further limits the amount of current available to be drawn.
Large power users like a kettle can draw 200 amps over a short period of time. To do this safely without causing damage to your batteries, you need at least a 300-amp power bank. In general, the big power users are any appliances that heat or cool, and the best tip is to use gas wherever possible with these items.
A 12-volt 2500-watt inverter will run most pod coffee machines and microwaves, but we recommend at least a 12-volt 250-amp hour battery bank. Additionally, it is always best to have the batteries as close to full as possible before running power-heavy items.
If you need help working out what you need, feel free to give us a call and talk to one of our experts. Choosing the right inverter size is crucial to ensure that your off-grid system functions properly.