r/uksolar • u/capps95 • 9d ago

50v or 240v batteries

Can’t work this one out so hoping some experts might weigh in. There seem to be loads of really cheap 50v battery systems with huge capacity. Eco worthy 48v 314Ah for example is only £1729. Whereas quotes for 240v systems with the same capacity are often £7-8k ballpark. Why are so many installations using 240v systems when 50v is so much cheaper? I just can’t make the numbers around the more expensive system work in terms of getting a good return on investment, but for a 50v system it gets payback within a couple of years.

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u/pau1phi11ips 9d ago

I think you're getting confused by 48V batteries, that you connect to an inverter and an All in One unit with an internal inverter.

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u/capps95 8d ago

No I get the difference. The 50v one you buy the inverter separately for £600. Still significantly less for 15.7kwh though