Talking Myself Out Of A New Solar Battery

Our solar battery wasn't a great financial choice: although it yields some savings, the steep upfront cost means that it will probably never break even. Recently, however, I found out that the Pylontech US2000C modules that it's made up of have come down in price quite significantly - I could add 2.4 kWh of battery capacity for a little under £500. That's about a third of the price of the originals, which feels like an absolute bargain. Such a significant reduction in price would mean that a new module would break even much sooner. After that, any savings that it generated would go towards the amortisation of its more expensive counterparts. So, I sat down and ran some numbers to see if it would make sense. Can We Fill The Capacity? The first question to answer was: if we had the capacity, could we actually fill it? There'd not be a lot of point in paying to expand capacity only for it to sit empty. Grid Charging The battery is currently1 set to charge at 25 amps. At that rate, it…