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Isn't the Tesla Powerwall a fully integrated system with multiple MPPTs, inverter, and charger? (Maybe I'm confusing the new one with the older versions) I imag
by GaggiX 2y ago
Isn't the Tesla Powerwall a fully integrated system with multiple MPPTs, inverter, and charger? (Maybe I'm confusing the new one with the older versions) I imagine that's where the cost comes in.
Where I live in Europe I can buy a lifepo4 cell for 97€ from a trusted supplier, 300Ah x 3.2V = almost a kWh. For a full battery you need to add the cost of a BMS and a balancer.
- MrsPeaches 2y agoElectronics in these systems are a low % of the BoM cost though, so wouldn’t expect it to make such a big difference.
- GaggiX 2y agoIf you buy a 16 cells to make a 48V battery than yeah the vast majority of the cost would be the lithium cells, a 16s 250A BMS should be around 150€, an active 16s balancer 50€.
- antonkochubey 2y agoYou also need an inverter, a high-quality 8-10 kW unit could approach a thousand euros easily.
- GaggiX 2y agoI was talking about making a battery, if you want a full solar installation then you also need an inverter, charger, MPPT.
- Panzer04 2y agoNot sure why you got downvoted. Its high value-add, but I would have thought competition would push prices down too.
- mcbishop 2y agoYes, it's fully integrated and UL listed.