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‘If 1.5m Germans have them there must be something in it’: how balcony solar is taking off
(www.theguardian.com)
this post was submitted on 11 Feb 2025
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Is the multiple of 12 thing just for ease of lead-acid storage?
Personally, a remnant of that. Being able to use standard lead acid batteries is a perk, but primarily I find that that voltage range of < 20-50>vdc in terms of equipment is in those 12v increments too. With the powedelivery (PD) extended power range (epr) going up to 48v right now, and the fixed voltages in that spec being multiples of 12 again matching the industry it is now.
With adjustable voltage supplies (AVS) it might matter less (because it can increment in 100mv instead of a couple fixed voltages) but I haven't messed with that yet myself