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Showing results 1 to 25 of 73
Search took 0.00 seconds. Search: Posts Made By: JmanC
Forum: Electrical: Batteries, Generators & Solar 23-07-2020, 05:48
Replies: 123
Views: 19,238
Posted By JmanC
Re: New Victron MPPT Firmware

So is there a way to send the real end amps info that are flowing into battery to the mppt using the BMV712? Or some other way? Like a add on wireless shunt?
Forum: Electrical: Batteries, Generators & Solar 05-07-2020, 06:38
Replies: 19
Views: 5,015
Posted By JmanC
Re: Limit to the number of 12V solar panels in series?

Yep, but this is a fold up panel I only set out when I can. Cheers.
Forum: Electrical: Batteries, Generators & Solar 04-07-2020, 08:24
Replies: 19
Views: 5,015
Posted By JmanC
Limit to the number of 12V solar panels in series?

Looking at how many 75watt 18V mp panels can be put into series for a string? Is there a voltage limitation from the internal bypass diodes? I would like to go 4 in series each string into a mppt,...
Forum: Lithium Power Systems 17-04-2020, 22:53
Replies: 4
Views: 1,053
Posted By JmanC
Re: Do cell terminals & cell links need corrosion protection?

Thank you aybabtme, that is what I wanted to hear. Since we coat all our lugs, terminals etc it just made absolutley no sense to me having bare copper or even bare tinned lugs on a battery you expect...
Forum: Lithium Power Systems 07-03-2020, 20:51
Replies: 4
Views: 1,053
Posted By JmanC
Do cell terminals & cell links need corrosion protection?

Everyone who shows how to build these LFP batteries doesn't talk at all about it. I would have thought a tiny amount of oxidation on the copper is unavoidable and will lead to a problem with...
Forum: Lithium Power Systems 04-03-2020, 08:27
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

For monitoring the cells I use those basic digital volt meter displays one at each cell just to get an idea if one is in trouble or any obvious mismatch when going to 100% reseting the battery...
Forum: Lithium Power Systems 02-03-2020, 07:33
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

I would check more like every 100-300cycles if they are well matched, would you agree?
Does that simple balance method get the same end result as an active BMS unit? Sounds like you will always keep...
Forum: Electrical: Batteries, Generators & Solar 12-02-2020, 04:22
Replies: 16
Views: 2,451
Posted By JmanC
Re: Can the Honda EU10 run the Sterling pro charge ultra 50A at full?

Thanks, can you say how many hours a week yours ran? can I assume the yamaha EF1000is would work too? It has better features over the honda.
Forum: Electrical: Batteries, Generators & Solar 12-02-2020, 04:21
Replies: 16
Views: 2,451
Posted By JmanC
Re: Can the Honda EU10 run the Sterling pro charge ultra 50A at full?

Thanks for that:thumb:

that 1000w for 30mins must just be some marketing i read. I should have known better.

45mins for 750w continuous is crazy. Does this sound right for a aged unit to anyone...
Forum: Electrical: Batteries, Generators & Solar 09-02-2020, 08:10
Replies: 16
Views: 2,451
Posted By JmanC
Re: Can the Honda EU10 run the Sterling pro charge ultra 50A at full?

While charging there is minimal loads (fridge and few others small loads).

I would run it occasionally not rely on it much. You mention good points, I also read that in hot climate the unit's...
Forum: Electrical: Batteries, Generators & Solar 09-02-2020, 04:46
Replies: 16
Views: 2,451
Posted By JmanC
Can the Honda EU10 run the Sterling pro charge ultra 50A at full?

I think it will given it's 0.99PF rating, but would like some experienced input before I spend the big dollars on the Honda. Last thing I won't is to have to try & return it, and I don't won't the...
Forum: Electrical: Batteries, Generators & Solar 09-02-2020, 04:27
Replies: 25
Views: 5,581
Posted By JmanC
Re: Batteries died after 28 years of service.

lol, they were most likely dead by the age of 12. I have a drill li battery pack 14yrs + that still going well but probabaly 20% capacity left. Seen cheap car starters get 12yrs because they cycle 5%...
Forum: Electrical: Batteries, Generators & Solar 05-11-2019, 00:42
Replies: 20
Views: 3,757
Posted By JmanC
Re: Questions about Dielectric Greases

Thanks. sounds like this stuff is not a Dielectric grease. Does it leave anything behind on the metals after many years? I brought a small tube online & it was $$ to ship.

Some amazon reviewers...
Forum: Electrical: Batteries, Generators & Solar 30-10-2019, 01:55
Replies: 20
Views: 3,757
Posted By JmanC
Questions about Dielectric Greases

Just a few questions as I have no experience with this stuff. Done a search online but cab't find anything.
How long do they provide corrosion resistance between mating surfaces? Like between a lug...
Forum: Lithium Power Systems 24-10-2019, 01:20
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

My capacity test is running a generic load on battery until somewhere down near 11.5V and counting AH consumed with monitor.
My understanding is between even 12V under load & 10.5V there is roughly...
Forum: Lithium Power Systems 24-10-2019, 01:18
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

Thanks John, appreciate the help. My turn off with bare cells is building the housing and all the gear needed. being a minimalist and all.
Forum: Lithium Power Systems 22-10-2019, 01:55
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

Thanks John noted about SoC gauges.

These are the cell voltages according to bms monitor on my 12v dropin when charging to 14.5V set on battery charger.
3.71 3.70 3.64 3.50
I held 14.5V on...
Forum: Lithium Power Systems 07-10-2019, 04:48
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

I'm having trouble with my BMV 712. It's soc gauge doesn't stay inline with my dropin's builtin bluetooth gauge & looks to be inaccurate. By the time I discharge down to 20% soc (according to...
Forum: Lithium Power Systems 03-10-2019, 06:32
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

From all my testing with my dropins:

No absorb duration required for hard constant power sources with at least 13.8-14V at terminals, just straight to float after setpoint is reached. This is what...
Forum: Lithium Power Systems 03-10-2019, 04:58
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

That's what I would do, when I get to shore just spend about 10secs at the sterling panel to quickly set both absorb/float to 13.2V and walk away. Dropins are getting cheaper & cheaper & the hope for...
Forum: Lithium Power Systems 03-10-2019, 04:47
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

Thanks for that. :thumb: Much clearer than I was just using the term Floating.
Forum: Lithium Power Systems 02-10-2019, 02:19
Replies: 7,793
Views: 1,551,937
Posted By JmanC
Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

Why exactly is Floating at correct voltages bad? For example if your on shore power and floating at around 50% soc all the time. Have not found anything anywhere as to why it's bad. Just the same old...
Forum: Electrical: Batteries, Generators & Solar 16-09-2019, 05:23
Replies: 15
Views: 2,241
Posted By JmanC
Re: How much capacity do flooded golf cart batteries start out with?

Very wise words. It's so obvious to me that Monitors are alot of learning to get right & offer no real advantage for the experienced and well setup. All they do is waste the user's time with...
Forum: Electrical: Batteries, Generators & Solar 16-09-2019, 05:06
Replies: 15
Views: 2,241
Posted By JmanC
Re: How much capacity do flooded golf cart batteries start out with?

All good replies, thanks!

In my area trojan t105 are pretty pricey so I would at least stick to good practices & try get the best out of them. Only small loads and never go over .13C charge rate....
Forum: Electrical: Batteries, Generators & Solar 15-09-2019, 03:26
Replies: 15
Views: 2,241
Posted By JmanC
How much capacity do flooded golf cart batteries start out with?

If they need to be cycled up to get to full rated capacity over many cycles 100+
Then how much capacity do they start out with in early life? For those who only use them non fulltime is there some...
Showing results 1 to 25 of 73
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