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So is it actually better if i run at 4.5?

Hello, From the TP4056 data sheet:https://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/TP4056.pdfi can see that it accepts from 4 to 8v Does anyone know if the efficiency/precision of the chip changes from the input voltage? I was thinking about running them at 7-8V from my bench power...

Did you connect the two batteries in series (Negative of Battery1 with Positive of Battery2) and then short the main Positive with the main Negative (Positive of Battery1 with Negative of Battery2)? That creates a short, and would explain the big spark and heating

The current batteries use Lithium iron phosphate (that explains the smaller voltage range) I was looking online for availability of Lithium iron phosphate cells and found out that they are a LOT more expensive, 300-500$/kwh (that also explains why they quoted me 4k for 4.8kwh) Why is it so...

- Voltage Range compatibility I don't mind getting less capacity but more life out of the cells so this is great! - Charge/Discharge Current The inverter is rated for 5kw output, and by putting the DIY battery in parallel with the 2x Growatt US2000 batteries i would assume it would draw...

Hello, I have recently got installed a solar+battery system, with 4.8kw of solar panels and 4.8kwh of batteries My inverter is a Growatt SPH5000https://www.growatt.co.nl/upload/file/contents/2019/06/5d0359c10d35d.pdf The batteries are 2x Growatt US 2000 48V...