11 ms·
The charge controller is surprisingly large (to me) relative to the rest of the system. I don’t have much experience - is there a reason it needs to be, or is t
by rrss 4y ago
The charge controller is surprisingly large (to me) relative to the rest of the system. I don’t have much experience - is there a reason it needs to be, or is the charge controller significantly overspec’d for this 50W panel?
BOM (linked from github page): https://docs.google.com/spreadsheets/d/1X0RDVBC6ifIS6Qov1lozrpKaqeHMXZGmCdqKKhxr7Yc/htmlview#gid=1210416398 https://docs.google.com/spreadsheets/d/1X0RDVBC6ifIS6Qov1loz...
panel short-circuit current is 3 A, but is paired with a 20A charge controller.
- BLO716 4y agoMPPT controller has a better communication set of commands and you'll notice the ethernet port that can send TX/RX out to a monitor or connect to a network. That's where the general $15-100 charge controller falls off the map - think Horror Freight. Mind you there are some spectacular Chinese PCB designs / implementations out there for cheap, but off the shelf this is a fairly inexpensive / future proof / expandable unit should more power come off that. I use something similar and have a wifi module that reports out to a dashboard in the house and can take remote commands from a phone if within bluetooth range.