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Open Roads Forum  >  Tech Issues

 > Charging Timer?

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BFL13

Victoria, BC

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Posted: 10/24/21 11:12am Link  |  Quote  |  Print  |  Notify Moderator

Would this gizmo be any use? Instructions at bottom of the link--none come with package as they warn.

Not sure I am reading it right--need more eyes on to confirm. Thanks.

Seems to answer the problem of how to put a timer on your charger if you don't put a "regular" timer on the 120v. Not clear if you are left with no charging at all. You could have the converter at 13.6 and use another charger at 14.6 with this timer? (when 14.6 time is up the 13.6 would be there to carry on in that case)

https://www.ebay.com/itm/224065068787?_t........53D%7Cclp%3A2334524%7Ctkp%3ABFBMisrzs5Zf


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pianotuna

Regina, SK, Canada

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Posted: 10/24/21 12:10pm Link  |  Quote  |  Print  |  Notify Moderator

Seller does not accept returns.


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My ride is a 28 foot Class C, 256 watts solar, soon to have SiO2 batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

time2roll

Southern California

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Posted: 10/24/21 12:54pm Link  |  Quote  |  Print  |  Notify Moderator

I would be worried switching 30 amps DC with that small relay. Maybe control a 15 amp charger.
Otherwise I would expect more reliability switching the AC power.


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2oldman

NM

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Posted: 10/24/21 01:25pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

Seller does not accept returns.
Even if they do it can be a hassle. I stay away from ebay.

BFL13

Victoria, BC

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Posted: 10/24/21 01:55pm Link  |  Quote  |  Print  |  Notify Moderator

Who would really return a $10 item if it didn't work? Goodness.

Perhaps this particular gizmo is too lightweight for RV work, but it is a good idea for some scenarios?

pianotuna

Regina, SK, Canada

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Posted: 10/24/21 02:03pm Link  |  Quote  |  Print  |  Notify Moderator

BFL13,

If you can't return it would you believe that quality control is high--or low? It doesn't matter if it is a 50 cent item--if you can't return it--I am NOT interested.

I could not find the owner's manual.

wa8yxm

Davison Michigan (East of Flint)

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Posted: 10/24/21 02:58pm Link  |  Quote  |  Print  |  Notify Moderator

Why use a timer
There are 3 types of Converter/chargers that I know off of hand
"Constant voltage" (one stage)
Two voltage (Times or sensed the parallex 7300T is a timed bulk then it goes to float
And 3 or 3+ stage (the best) the Progressive Dynamics 9200 and IOTA IQ4 models top this list.

Pick any other than the first.


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BFL13

Victoria, BC

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Posted: 10/24/21 03:15pm Link  |  Quote  |  Print  |  Notify Moderator

Been many threads on this. A typical three- stage converter does not meet all needs for absorption timing. Eg the CW four hours might be too long or too short.

If you use a single stage charger set at 14.6, you want to control the time that is left on. If manual control is not convenient, a timer can be used to pick a suitable absorption time.

Mex likes the household type of lights timer on the 120v side. Some fancy chargers will let you set an absorption voltage and an absorption time.
I thought this gizmo is an attempt to insert that fancy feature into the DC side of an ordinary charger.

MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 10/24/21 04:06pm Link  |  Quote  |  Print  |  Notify Moderator

Wind up timer powering a constant duty relay. Chinese electronic timers are
J U N K
even the most expensive Chinese models blow up

I have never had a failure with an Intermatic.

MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 10/24/21 04:47pm Link  |  Quote  |  Print  |  Notify Moderator

Look on Amazon for square face 200 - Amp DC relay.The Intermatic is a snap action switch. The relay should last forever x 12.

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