15kWh 48V LFP battery around $1800 with low quality battery management system in metal box on wheels. Car batteries need more expensive inverters if you want to fast charge them (150kW-950kW) and super fast discharge them while driving fast (>100 kW). Thus my 600kW extender comes to almost $62000 for vans and small trucks. Cheaper if installed as house battery. The Mercedes eSprinter 56kW van costs around $80000 new but we sell 3 year old vans like this for $4000 without battery. So refurbished and converted to eCamper with 1800 mile range you pay $6700. You can drive 3000 km (almost 1860 miles) with this battery in the eSprinter and eCamper. A normal size car would go twice as far with this battery but it's big and heavy enough that you need to tow it in a trailer.

The crucial point though is the charging/discharging inverter (converter) that I purpose built (printed circuits boards) and a change to the car firmware. Without it the car will reject the battery, your acceleration would be less and it also would not last the same amount of discharge cycles. My battery electronics works fine for cars, trucks, boats, house and neighborhood batteries (up to 6mW per shipping container).

We build entire smart grids around the batteries, solar panels and tiny houses. https://www.researchgate.net/profile/Merik-Voswinkel/publica...

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RobinL an hour ago | parent [-]

I love this! Thanks for the detailed response, super interesting

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morphle an hour ago | parent [-]

Thank you. I hardly get to explain the techology I 'invent' (power chips, power router, parallel battery charger, car firmware, charging (station) software, simulation software) because the investors customers only want to hear that its cheaper or sells better (then Tesla). Or that besides going from 4000 to 20000 dis/charge cycles you also prevent any li-ion fires and have fire alarm sensors on every battery cell. The main thing I would like to shout from the rooftops is: Not a single battery on the planet charges their battery cells in parallel as we do, they all shorten their cell lifetime by charging/discharging them to fast in series, what will damage all battery cell types but especially the li-ion.

It is the same with the article we are commenting on here: if people just listen to the statistics, the simulations and the actual market developments they would see that 100% solar+battery is the cheapest energy.

The simple message is Solar is by far the cheapest energy: below 1 dollar cent per kWh and that will fall a lot more in the next decade until we get to 'a squanderable abundance of free and clean energy' as Bob Metcalf puts it https://www.youtube.com/watch?v=axfsqdpHVFU Batteries still double the cost of that solar but these prices are falling rapidly too. It is already cheaper to have solar nearby than transmit it over a distance of a few miles.

More in my earlier comments weeks and months ago https://news.ycombinator.com/threads?id=morphle

	▲	saijanai 12 minutes ago \| parent [-]
		Why are the prices in the USA so much higher? Also: when we last spoke you were talking about energy storage solutions. How has that progressed recently?