question

newtor avatar image
newtor asked

Standby Battery Charger

We have small installation comprising 5*200W panels, MPPT 100/50, Cerbo GX and 4*110Ah batteries, running a remote amateur radio repeater station and emergency radio communications for RAYNET.

We are considering installing a mains battery charger (We still have mains on site), controlled by the generator relay option on the GX to switch the charger on at a low battery voltage.

My question is, can we connect the battery charger directly across the battery through a suitable high current diode, with the same in the feed to the battery from the MPPT 100/50.

Thanks in advance. (Colin)


battery charging
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2 Answers
Erik Sporns avatar image
Erik Sporns answered ·

Im using a dc-dc charger in my van to charge the batteries occasionally. Im also running the 100/50. I did not put in a diode and never noticed any issues. Id suggest that it would work without the diode.

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wkirby answered ·

You can connect the mains charger directly to the battery.
There is no need for any diodes at all.

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