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Search took 0.01 seconds. Search: Posts Made By: booster
Forum: General Discussion Forum 08-12-2016, 10:18 PM
Replies: 332
Views: 58,797
Posted By booster
I don't understand the fascination with...

I don't understand the fascination with voltmeters for SOC determination. They are barely better than the idiot lights, unless you have a designated fixed load you can hook up to get a more...
Forum: General Discussion Forum 08-12-2016, 10:04 PM
Replies: 332
Views: 58,797
Posted By booster
I would want to see the entire discharge vs life...

I would want to see the entire discharge vs life cycles chart before saying that. The could be equal or better at any one spot, and very much different over the rest of the curve. Some of the AGM...
Forum: General Discussion Forum 08-12-2016, 09:07 PM
Replies: 332
Views: 58,797
Posted By booster
Yep.:wave: I do find it interesting that you...

Yep.:wave:

I do find it interesting that you can repair the damage done by poor charging by doing shallower discharges, which actually increase the number of damaging recharge cycles you would...
Forum: General Discussion Forum 08-12-2016, 08:31 PM
Replies: 332
Views: 58,797
Posted By booster
This was not a statement of not going to lithium...

This was not a statement of not going to lithium batteries, it was a statement on how Roadtrek manipulated data to try to prove a point.

If you read the descriptions of the charts provided for...
Forum: General Discussion Forum 08-12-2016, 07:07 PM
Replies: 332
Views: 58,797
Posted By booster
I think we are getting a bit off track here. The...

I think we are getting a bit off track here. The question was if the 50% rule was incorrect for AGM batteries, and somehow lithium cost comparisons got into it. The only reference was that based on...
Forum: General Discussion Forum 08-12-2016, 04:11 PM
Replies: 332
Views: 58,797
Posted By booster
The number of cycles you get may drop in half,...

The number of cycles you get may drop in half, but the total energy you can store and then recover is much less than that, and the energy is what counts. What that means compared to cycles is that...
Forum: General Discussion Forum 08-12-2016, 02:03 PM
Replies: 332
Views: 58,797
Posted By booster
The latest discussion is here: ...

The latest discussion is here:

https://www.classbforum.com/forums/f23/another-view-of-the-50-agm-discharge-limit-5595.html

It all got started originally in one of the lithium threads, which is...
Forum: General Discussion Forum 08-12-2016, 01:09 PM
Replies: 332
Views: 58,797
Posted By booster
I reread the Roadtrek PDF a couple of more times,...

I reread the Roadtrek PDF a couple of more times, and it seems to fall into the category of lots of confusing calculations based on shaky starting points and data. I doubt many everyday Roadtrek...
Forum: General Discussion Forum 08-11-2016, 08:55 PM
Replies: 332
Views: 58,797
Posted By booster
Our Magnum has an internal transfer switch also,...

Our Magnum has an internal transfer switch also, and it works whether the inverter section is on or not. If it sees shore power, it transfers to it, powers the entire coach, and charges the...
Forum: General Discussion Forum 08-11-2016, 07:06 PM
Replies: 332
Views: 58,797
Posted By booster
Wow, one would be have to be surprised they put...

Wow, one would be have to be surprised they put that in writing. 5 amps, 80% usable gives 32 hours to totally dead WITHOUT ANY POWER DRAW.

Of course they do the standard AGM claim that they can...
Forum: General Discussion Forum 08-11-2016, 03:16 PM
Replies: 332
Views: 58,797
Posted By booster
Great information, thanks for posting it. ...

Great information, thanks for posting it. Generally confirms the earlier Roadtrek statements, but contradicts a later 3 amp statement. Do you find that an unattended, unloaded, on, module goes dead...
Forum: General Discussion Forum 08-04-2016, 12:49 PM
Replies: 332
Views: 58,797
Posted By booster
DC Power uses 200 degrees F, so the 90*C may be...

DC Power uses 200 degrees F, so the 90*C may be the common standard for hot, but I have never seen a general guideline on it.

I thought the sweet spot would be where the fan efficiency peak would...
Forum: General Discussion Forum 08-03-2016, 11:06 PM
Replies: 332
Views: 58,797
Posted By booster
Interesting information. I was trying to...

Interesting information. I was trying to extrapolate the curve as the amps tapered once it quit cycling, too. It looked like the batteries would take over 300 amps, if the curve continued the way...
Forum: General Discussion Forum 08-03-2016, 10:28 PM
Replies: 332
Views: 58,797
Posted By booster
I think, like in many businesses, DC Power is...

I think, like in many businesses, DC Power is overstating the actual hot output of their alternators. Avanti's numbers show a drop to nearly50% in the hot output reduction mode, and net of under 70%...
Forum: General Discussion Forum 08-03-2016, 12:13 PM
Replies: 332
Views: 58,797
Posted By booster
I think if there were any obvious differences, it...

I think if there were any obvious differences, it would be due to setup parameters primarily, such as what are the charge and discharge cutoff points, which would determine usable capacity. Beyond...
Forum: General Discussion Forum 08-03-2016, 01:40 AM
Replies: 332
Views: 58,797
Posted By booster
I agree with Greg, there is is absolutely no...

I agree with Greg, there is is absolutely no reason either a central, or module approach can't work well. Any decent system integrator could do a system in their sleep, IMO.

If Roadtrek does go...
Forum: General Discussion Forum 08-03-2016, 12:07 AM
Replies: 332
Views: 58,797
Posted By booster
Originally Posted by gregmchugh...

Originally Posted by gregmchugh https://www.classbforum.com/forums/images/classb/buttons/viewpost.gif...
Forum: General Discussion Forum 08-02-2016, 02:56 PM
Replies: 332
Views: 58,797
Posted By booster
DC Power has a 370 amp alternator in a standard...

DC Power has a 370 amp alternator in a standard case now. I wonder how much that would heat cycle, and how much more "net" AH you would actually gain.

I looked a bit closer at Avanti's chart to...
Forum: General Discussion Forum 07-28-2016, 12:47 AM
Replies: 332
Views: 58,797
Posted By booster
I agree, and would add that it is highly unlikely...

I agree, and would add that it is highly unlikely that the BMS is using the power. As we discussed earlier, it is most likely the current handling devices, eg relays, that are using the power. ...
Forum: General Discussion Forum 07-23-2016, 10:04 PM
Replies: 332
Views: 58,797
Posted By booster
That solution is easy. Each module has it's own...

That solution is easy. Each module has it's own monitor and no a big deal doing that, or even better you don't have to turn them on and off and have one monitor. IMO there is no viable reason to...
Forum: General Discussion Forum 07-23-2016, 09:03 PM
Replies: 332
Views: 58,797
Posted By booster
I think I would have to disagree with a lot of...

I think I would have to disagree with a lot of this. When you have 70ah per day of parasitic on a 200ah system, you have a problem that is beyond normal, especially when the the parasitic increases...
Forum: General Discussion Forum 07-23-2016, 03:53 PM
Replies: 332
Views: 58,797
Posted By booster
Yep, exactly the point I was making:shh:

Yep, exactly the point I was making:shh:
Forum: General Discussion Forum 07-23-2016, 03:34 PM
Replies: 332
Views: 58,797
Posted By booster
Another thread got to talking about warranties...

Another thread got to talking about warranties and such, and the Ecotrek battery drain issue came back to mind in relation the the value of a long warranty if there is no admission of a problem...
Forum: General Discussion Forum 06-14-2016, 10:18 PM
Replies: 332
Views: 58,797
Posted By booster
Yep, real world is what counts, and that is why...

Yep, real world is what counts, and that is why it all gets so difficult at times. From what we found in the previously mentioned discussion on cumulative amp hours over life, discharges to 80% down...
Forum: General Discussion Forum 06-14-2016, 09:04 PM
Replies: 332
Views: 58,797
Posted By booster
IMO, most of the questions and issues brought up...

IMO, most of the questions and issues brought up about lithium have little to do with the batteries themselves, but in the hardware and software needed to actually use them. The phone companies...
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