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 > Inverter AGM questions

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S Davis

Western WA

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Joined: 08/11/2005

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Posted: 01/06/18 05:26pm Link  |  Quote  |  Print  |  Notify Moderator

BFL13 wrote:

I thought you were using a breaker at each end as your "fuses". You asked if you also needed fuses. Mex did not answer that. I do not know the answer. I get confused over "slow" vs "fast" acting and when to use which.


I am using 120amp bussmann breakers on both ends of the charging circuit from the truck as well as the line to the bed plug for the truck camper charging circuit. I was asking about the two 8D Lifeline batteries that I am installing in the rear seat area of my crew cab and the wiring to the 650amp buss bar where it all ties together.

MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 01/06/18 08:22pm Link  |  Quote  |  Print  |  Notify Moderator

If the distance is short and uncomplicated between the battery positive terminal and the buss bar, then no protection is demanded. En example would be mounting the batteries then passing cables through a wooden partition. Both batteries would then be wired to the buss bar then things coming in and out of the buss bar would see a circuit breaker at each cable or wire.

(1) battery 2 cables. One positive and one negative. The buss bar does all of the manifolding. Battery cable count should be kept to the bare minimum.

S Davis

Western WA

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Posted: 01/06/18 09:17pm Link  |  Quote  |  Print  |  Notify Moderator

The buss bars will be within 2' of the battery terminals so I will take your advice and just use breakers on each circuit off the buss bar.

S Davis

Western WA

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Posted: 06/05/18 11:27am Link  |  Quote  |  Print  |  Notify Moderator

Ok starting to move forward again, I am looking at battery isolation relay/chargers. I have found this one, any thoughts?

https://smartercharger.com/products/dcdc/smartpass-120/

pianotuna

Regina, SK, Canada

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Posted: 06/05/18 11:53am Link  |  Quote  |  Print  |  Notify Moderator

S Davis,

Most of us just want the starter battery to be kept from discharging. An inexpensive continuous duty solenoid with a 200 amp rating will do that inexpensively and reliably (mine are 9 years old now).

I did add a trik-l-start to keep the starter battery charged for the long times between trips which has continued to offer perfect service for 7 years.


Regards, Don
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.

MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 06/05/18 12:06pm Link  |  Quote  |  Print  |  Notify Moderator

Un needed

[image] height=500 width=500 border="0" alt="[image]">

I do not like battery management that uses wires and switches, because wires and switches turn out to be 80% of the problems that plague management systems.


Easier to install. A fraction of the price. And it keeps your engine battery maintained when connected to shore power for extended lengths of time. It's all automatic and no stupid wires and switches to run.

* This post was edited 07/08/18 01:40am by MEXICOWANDERER *

MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 06/05/18 12:08pm Link  |  Quote  |  Print  |  Notify Moderator

Un needed

[image]

I do not like battery management that uses wires and switches, because wires and switches turn out to be 80% of the problems that plague management systems.

[image]

Easier to install. A fraction of the price. And it keeps your engine battery maintained when connected to shore power for extended lengths of time. It's all automatic and no stupid wires and switches to run.

S Davis

Western WA

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Joined: 08/11/2005

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Posted: 06/05/18 06:20pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

S Davis,

Most of us just want the starter battery to be kept from discharging. An inexpensive continuous duty solenoid with a 200 amp rating will do that inexpensively and reliably (mine are 9 years old now).

I did add a trik-l-start to keep the starter battery charged for the long times between trips which has continued to offer perfect service for 7 years.


I was thinking it would be better using a dc to dc charger that can buck the voltage to properly charge the agm batteries, my truck charging system voltage sits at 14.2 to 14.4.

Don't agm batteries need higher voltage to properly top them off and or condition them?

MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 06/05/18 08:32pm Link  |  Quote  |  Print  |  Notify Moderator

Your truck voltage is fine the way you state. Millions of AGM batteries see this same voltage every day. You may well overthink your way into a problem [emoticon]

S Davis

Western WA

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Posted: 06/05/18 09:12pm Link  |  Quote  |  Print  |  Notify Moderator

MEXICOWANDERER wrote:

Your truck voltage is fine the way you state. Millions of AGM batteries see this same voltage every day. You may well overthink your way into a problem [emoticon]


Ok thanks for the reality check.

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