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Search took 0.00 seconds. Search: Posts Made By: booster
Forum: Electrical | Charging, Systems, Solar and Generators 01-27-2024, 01:37 PM
Replies: 91
Views: 6,530
Posted By booster
Yeah, a lot of what I have seen in the specs for...

Yeah, a lot of what I have seen in the specs for LFP also.


Not hot
Not totally full
Not very low SOC
Narrow SOC in middle of range best with frequent charging
Forum: Electrical | Charging, Systems, Solar and Generators 12-18-2023, 09:02 PM
Replies: 91
Views: 6,530
Posted By booster
davydd has posted in the past that ARV does a...

davydd has posted in the past that ARV does a capacity test on ever unit the sell new and also when they receive it back, so they certainly have that data on hand. I had asked if he got it and he...
Forum: Electrical | Charging, Systems, Solar and Generators 12-15-2023, 01:28 AM
Replies: 91
Views: 6,530
Posted By booster
A lot of the data is saying lithium like the...

A lot of the data is saying lithium like the middle of the state or charge range, often stating things like staying within the 40-70 percent for instance. With no need to get full that can be...
Forum: Electrical | Charging, Systems, Solar and Generators 08-23-2023, 03:43 PM
Replies: 91
Views: 6,530
Posted By booster
I think this Masters thesis paper may be of...

I think this Masters thesis paper may be of interest as it sort of addresses the original question directly. Be aware it is from 2017 so doesn't include any research since then. It is obvious from...
Forum: Electrical | Charging, Systems, Solar and Generators 08-22-2023, 11:26 PM
Replies: 91
Views: 6,530
Posted By booster
How are you defining "full"? At max charge for...

How are you defining "full"? At max charge for lithium at 14.7v rested for a 12v system, or with some % headspace on the charge?
Forum: Electrical | Charging, Systems, Solar and Generators 08-22-2023, 12:06 PM
Replies: 91
Views: 6,530
Posted By booster
That balance looks good, but the question would ...

That balance looks good, but the question would have to be how you got 300ah on 4 cells.


I have to assume you have a parallel then series setup or a series then parallel system?


If you do...
Forum: Electrical | Charging, Systems, Solar and Generators 08-21-2023, 01:28 PM
Replies: 91
Views: 6,530
Posted By booster
I think that you could possible do a couple of...

I think that you could possible do a couple of things to help lifespan based on my, so far, limited testing of our 618ah bank of 3 SOK batteries.


I did all the preliminary "charge the batteries...
Forum: Electrical | Charging, Systems, Solar and Generators 08-20-2023, 09:28 PM
Replies: 91
Views: 6,530
Posted By booster
I agree. It would be nice if some parts of this...

I agree. It would be nice if some parts of this discussion showed up on a sticky so, especially new users, could be referred to it.
Forum: Electrical | Charging, Systems, Solar and Generators 08-19-2023, 12:22 PM
Replies: 91
Views: 6,530
Posted By booster
Amp-hours and watt hours aren't exactly...

Amp-hours and watt hours aren't exactly interchangeable without the voltage so both can be used if the voltage is given for amp hours, but voltage is still needed to know what is going on with the...
Forum: Electrical | Charging, Systems, Solar and Generators 08-17-2023, 11:22 PM
Replies: 91
Views: 6,530
Posted By booster
The good ones use amp hours and watt hours for...

The good ones use amp hours and watt hours for capacity specs. If they don't know to do that, how do they manage to design a battery. It's the sales literature marketing department the fudges and...
Forum: Electrical | Charging, Systems, Solar and Generators 08-17-2023, 09:46 PM
Replies: 91
Views: 6,530
Posted By booster
The amps instead of amp-hours has been a pet...

The amps instead of amp-hours has been a pet peeve of mine for a long time and must be very confusing for new members. As Avanti said watts is probably a better unit when talking about power like...
Forum: Electrical | Charging, Systems, Solar and Generators 08-17-2023, 05:51 PM
Replies: 91
Views: 6,530
Posted By booster
618ah of SOK lithium (3X206ah) is about 144...

618ah of SOK lithium (3X206ah) is about 144 pounds.
Forum: Electrical | Charging, Systems, Solar and Generators 08-16-2023, 05:22 PM
Replies: 91
Views: 6,530
Posted By booster
Electric race cars have had quick change battery...

Electric race cars have had quick change battery packs for quite a while now. You may want to look at how they do it. The changes are done very quickly.
Forum: Electrical | Charging, Systems, Solar and Generators 08-14-2023, 11:10 AM
Replies: 91
Views: 6,530
Posted By booster
This is correct, IMO, and the math is actually...

This is correct, IMO, and the math is actually quite simple if you turn it into lifetime battery discharge amp hours then make a graph.


All this is in the earlier threads on the forum including...
Forum: Electrical | Charging, Systems, Solar and Generators 08-14-2023, 01:03 AM
Replies: 91
Views: 6,530
Posted By booster
Did they ever tell you how much capacity your old...

Did they ever tell you how much capacity your old van lost of the years?
Forum: Electrical | Charging, Systems, Solar and Generators 08-13-2023, 11:39 PM
Replies: 91
Views: 6,530
Posted By booster
This relates to the lithium originals claims...

This relates to the lithium originals claims about very little voltage sag and it does appear to be much better with them over AGM.


Perhaps this AGM discussion should be on it's own as it is...
Forum: Electrical | Charging, Systems, Solar and Generators 08-13-2023, 05:28 PM
Replies: 91
Views: 6,530
Posted By booster
You might want to read some older threads on this...

You might want to read some older threads on this forum about the 50% rule as they discuss exactly what you are talking about with a lot of data and detail. Bottom line when you calc it all out is...
Forum: Electrical | Charging, Systems, Solar and Generators 08-10-2023, 10:19 AM
Replies: 91
Views: 6,530
Posted By booster
The original link given was for their 3.5 year...

The original link given was for their 3.5 year update and they were already down to 75%. Per the 80% worn out limit that is commonly applied to AGM batteries, they were already worn out at that...
Forum: Electrical | Charging, Systems, Solar and Generators 08-09-2023, 04:47 PM
Replies: 91
Views: 6,530
Posted By booster
I think most that look for that much shore power...

I think most that look for that much shore power charging are using two 100 amp chargers in parallel. I have seen several that listed that they claim can be ganged to increase charge rate. I don't...
Forum: Electrical | Charging, Systems, Solar and Generators 08-09-2023, 12:19 PM
Replies: 91
Views: 6,530
Posted By booster
Slow charging doesn't seem to be an issue from...

Slow charging doesn't seem to be an issue from what I have read, and cycling in the middle of SOC is said to be a good thing. We have the same panels and had no issues with ours either. What...
Forum: Electrical | Charging, Systems, Solar and Generators 08-07-2023, 05:11 PM
Replies: 91
Views: 6,530
Posted By booster
What is your charge profile and voltages? ...

What is your charge profile and voltages?


How deep do you discharge them typically?
Forum: Electrical | Charging, Systems, Solar and Generators 08-07-2023, 01:07 PM
Replies: 91
Views: 6,530
Posted By booster
I have considered the whole lithium battery thing...

I have considered the whole lithium battery thing the "wild west" of batteries with every person for themselves since the beginning.


I suspect a lot of what we know now was known 5 years ago...
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