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CMG 20A PWM controller:




This is a bit of a knockoff of the CPY 2420. They look like they're from the same family, though this model
has an informative LCD screen. But the heat sink on the back is about worthless, and the unit is noticeably
lighter. In some places it says it's both MPPT and PWM. But there's no big inductors inside, it's just PWM.

Unfortunately, the 2420 has gotten hard to find, and this one is still showing up, so pay close attention to
what you're ordering. It's a shame they put an LCD on this one and not on the 2420. Standby current is 26mA,
probably due to the USB boost regulator running all the time. Still, that's not terribly bad.


CMG 20A 12V 24V LCD listing from eBay.pdf (1378 KB)

cmg2420-Ladregulator-20A-pwm-manual.pdf

CMG:CMF Series Solar Charge Controller.pdf (653 KB)

CMG 20A	CMG PWM 1	CMG PWM 2	CMG PWM 3

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last updated 02/14/2025 at 23:53:12 by make_www_index.command version 2025.02.14.A