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 > Solar mppt controller, uses for "load" outputs

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wanderingaimlessly

Buggs Island lake

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Posted: 04/20/21 04:52pm Link  |  Quote  |  Print  |  Notify Moderator

I will be installing a 325 watt panel and a 30 Amp Renogy Rover controller. Reading through the manual it mentions the "load" terminals. These appear to be outputs at the battery voltage, I assume (the manual doesnt say) that these are in addition to the charging voltage supplied to the battery, and are primarily available power during the day when power is coming from the panels.
I can see adding a cigar lighter type outlet to charge my drones and a few other items from this source. What other uses do folks typically find for this function?

Lwiddis

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Posted: 04/20/21 04:57pm Link  |  Quote  |  Print  |  Notify Moderator

I don’t have a Renogy controller but isn’t “load” available only when the panels are producing power? I find most don’t use load...me included.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AMP Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


pianotuna

Regina, SK, Canada

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Posted: 04/20/21 05:26pm Link  |  Quote  |  Print  |  Notify Moderator

lights at night.

most folks ignore that output.

mine is in the ignore category.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

FWC

The Wilderness

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Posted: 04/20/21 05:33pm Link  |  Quote  |  Print  |  Notify Moderator

At least in Victron equipment, the load terminals can be used to provide a low voltage disconnect, current monitoring and a remote control 'master switch'.
I run everything through my load terminals. However, they have a current limit, so depending on what your loads are, you may not be able to use them this way.

One idea is to run the small always on devices off the load terminals (propane detector, alarms, usb chargers etc) so that if you forget to disconnect the battery in storage the control will switch theses off before your battery is all the way dead.

BFL13

Victoria, BC

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Posted: 04/20/21 05:49pm Link  |  Quote  |  Print  |  Notify Moderator

With an RV, all loads are on the battery bank, supported by the charger(s), so no point in using the load terminals on the solar controller at all. Your solar output in amps goes to loads first, then anything left goes to the battery if it needs any. Same with the converter--loads first.

Zero reason to use the load terminals of the controller--EXCEPT--the load terminals have all sorts of settings in the controller for how long to leave them on etc, which might have an application in an RV I have not thought of. So other than that, forget those load terminals IMO.


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time2roll

Southern California

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Posted: 04/20/21 06:04pm Link  |  Quote  |  Print  |  Notify Moderator

Charging an auxiliary battery would be my only suggestion in the RV world.


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StirCrazy

Kamloops, BC, Canada

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Posted: 04/21/21 06:19am Link  |  Quote  |  Print  |  Notify Moderator

FWC wrote:

At least in Victron equipment, the load terminals can be used to provide a low voltage disconnect, current monitoring and a remote control 'master switch'.
I run everything through my load terminals. However, they have a current limit, so depending on what your loads are, you may not be able to use them this way.

One idea is to run the small always on devices off the load terminals (propane detector, alarms, usb chargers etc) so that if you forget to disconnect the battery in storage the control will switch theses off before your battery is all the way dead.


thats a neat idea, I never could see what to use in mine because of the low amprage...

Steve


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red31

Dallas

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Posted: 04/21/21 07:35am Link  |  Quote  |  Print  |  Notify Moderator

With all the lighting controls for the load terms, program the controller for on a couple of hours and wire up LEDs under the trailer so it GLOWS for a few hours at sunset [emoticon]

I've done this for years with 100w/motorcycle batt and 6 landscape lights around my deck.

useless to me on the trailer.

D.E.Bishop

Eagle Rock, CA

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Posted: 04/21/21 08:20am Link  |  Quote  |  Print  |  Notify Moderator

Due to the way Winnebago wired my coach, the chassis battery does not charge from shore power. My solar panels are wired parallel to that circuit. I bought a small 12vdc timer and have it set for 30 minutes every three days to use the "load" output trickle into the chassis battery.

The timer was less than $10 and I intend to use it when I finish my 12 vdc solar landscape lighting system to turn the lights on and off.


"I travel not to go anywhere, but to go. I travel for travel's sake. The great affair is to go". R. L. Stevenson

David Bishop
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arlettamorgan

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Posted: 01/19/22 08:46am Link  |  Quote  |  Print  |  Notify Moderator

It is not easy to write a literature essay.

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