Magnum (now owned by Sensata) not making inverters and chargers any more

booster

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Our Magnum MS2000 inverter charger looks to be on it's last legs. Inverter is making noise like big load on it and using 20 amps of DC but all the AC is off so no loads on it at all. By coincidence(?) our ceiling fan glitched out around the same time, it appears so maybe the inverter though a big DC spike also. Hope it didn't wreck anything else.

Went to see if there were repair centers around to work on it, and on the Don Rowe site it said all the Magnums were discontinued. Ouch. Also said no repair parts would be available unless you were still under warranty, double Ouch.

I have very specific charge profile requirements to be able to do the midrange charging calibration charge for out battery monitor that controls the remote alternator so went looking. Only thing I initially found that would fit the space, sort of, was a Renogy 3000 what inverter charger but it was a 22# lightweight inverter high frequency model that aren't great for anything that starts hard. Plus the tend to not hold up all that well. And also required a wireless, bluetooth remote and communication hub giving just too many failure points, I think.

I kept looking and stumbled on a Samlex that looked at first glance to not be all that flexible for what I needed. I looked at the remote which was only $150 and figured no way it would do much as the charger was just fixed programs. Very surprised to see it had more actual flexibility and features than the Magnum and appeared to be a near close of it with the same mounting pattern, an inch longer, and an inch plus taller. All that it doesn't have is shunt based tail amp charging, just internal that isn't all the accurate because of loads. If I was still on AGMs that would be an issue, but I am using voltage/time/off/rebulk for the lithium so no big deal now. It should be close but fit the area with only small changes to the bed frame and guarding. Running the RJ45 cable to the front of the Roadtrek will probably be worse. The one I ordered is a 3000 what so 50% more capacity besides. It appears to be designed to replace Magnum MS model. EVO-3012 unit with EVO-RC-PLUS remote.

The Samlex is a heavy low frequency transformer model so more durable and better on hard starting things. What is doesn't appear to have it the quite good usability of the Magnum remote. Lots more multiple button pushes to get the simple stuff done and the programming will be a handful with remote instructions and the unit instruction both being about 120 pages long.

I do feel bad for those with Volta systems because the inverters and chargers are all Sensata Magnum stuff and now they are orphans. Volta may be able to shift to the Samlex, but who knows.
 
That is bad news, Magnum were very popular in 2013 when I build my camper van. I checked the Samlex 1200W but it wouldn’t fit in in my electrical cabinet due to its width, Magnum 1000W is 8.4” and Samlex 12.76”. AIMS and Victron are a little smaller but still too big to replace my Magnum. Ideally for me would be to replace both Inverter/Charger and MPPT charge controller with a single unit but I don’think they exist.
 
That is bad news, Magnum were very popular in 2013 when I build my camper van. I checked the Samlex 1200W but it wouldn’t fit in in my electrical cabinet due to its width, Magnum 1000W is 8.4” and Samlex 12.76”. AIMS and Victron are a little smaller but still too big to replace my Magnum. Ideally for me would be to replace both Inverter/Charger and MPPT charge controller with a single unit but I don’think they exist.
 
I just looked at the Volta site, and it has been scrubbed of anything to do with Sensata and Magnum. The long on the site layouts of the system with Magnum components now are just arrows going to the blank area.

Have any of the Volta system on their vans heard anything about it? I am sure Volta knew about it coming a long time ago, but it is still going to cost Volta a bunch to change it all to other parts.
 
This is bad news. I have (or should say had) been very happy with Magnum. Still I installed a Xantrex Freedom XC PRO 3000 in my new popup camper when it was being build. It had a better fitment than the Magnum. I wasn't happy to do it at that time but I guess that I have lucked out.

This frees me to look at newer technology in the future. I am going to change out a little Magnum in our trailer; now I am open to other options.

booster, why do you need to run new RJ45 cable?
 
The Magnum appears to use a 4 wire 6P connector for the remote and while the Samlex shows a way to make a converter cable to RJ45, I know from past history at work that they are always a problem over time. Hopefully having the 6P to help pull the new cable for the remote will make it easier. The Samlex will come with a proper RJ45 orientation cable for the unit and remote so I think better to go that way for reliability.

The Magnum had it's warts, especially on lithium batteries that it wasn't fast enough reacting to get best results, but it had worked very well for the AGM batteries we had before. The Samlex claims much faster data update rates so hopefully will be better.
 
Any chance that Tripplite would be a solution?
They are a very well respected company that's been in business since 1922.

The Roadtrek had a Tripplite it from the factory and I know it well. IMO they are way overpriced and a basically borderline capable charger. Ours was gone after only a few years so we could get decent charging profiles.
 
I don't know what you mean by " borderline capable"? Could you please elaborate?
My charging system is just fine with the original equipment. I'm not going to replace it unless it fails. It's the original equipment and so far so good.
 
I don't know what you mean by " borderline capable"? Could you please elaborate?
My charging system is just fine with the original equipment. I'm not going to replace it unless it fails. It's the original equipment and so far so good.
The problem comes in the charge profile the Tripplite uses. It is essentially impossible to charge an AGM or wet cell lead acid battery to full. On our wet cells and them AGMs we never saw over 85% of actual full on our batteries and that reduces usable power and shortens battery life. Do things appear to be fine if you don't actually check how full they got, yes they will look just fine, but not be very decent results that many people don't know are there.
 
This is very interesting; you know I have a Victron BMV 712 and two solar panels. Both the Victron and the Zamp display reads 100 percent charge of my two Full River AGM 6 volt batteries, so, I still don't see your point. Also, the bi-directional battery separator charges up my starting battery to full . Maybe you had a different Tripp Lite unit. All I'm saying is that Tripp Lite is a solid company that has been around and has excellent customer service. They will even give you phone support. They stand behind their products.
Price is only one factor in any transaction, the question is can you work with the company you purchased products from? I trust Tripp Lite; they have been a good company for my needs.
 
This is very interesting; you know I have a Victron BMV 712 and two solar panels. Both the Victron and the Zamp display reads 100 percent charge of my two Full River AGM 6 volt batteries, so, I still don't see your point. Also, the bi-directional battery separator charges up my starting battery to full . Maybe you had a different Tripp Lite unit. All I'm saying is that Tripp Lite is a solid company that has been around and has excellent customer service. They will even give you phone support. They stand behind their products.
Price is only one factor in any transaction, the question is can you work with the company you purchased products from? I trust Tripp Lite; they have been a good company for my needs.
What any charger says on it's panel related to state of charge is a very unreliable way to determine the state of charge of lead acid batteries. If you look at the specifications from the manufacturers of the batteries, almost all will specify determining the state of charge at 100% as an amp reading at full charge voltage. If you are above that amp reading, the battery is not full.

The only way to know if they are full, IMO, is to have shunt based battery monitor that can be set to those parameters. If set properly, the monitor will tell you accurately when the battery is full. I can tell you that none of the batteries I have checked for people after charging with normal, non amp based chargers got over 90%.
 
You know, I have a shunt based system on my rig. Apparently, nothing I can say will change your mind.
Sure there is so just tell me.

Tell us how big the battery bank is and what brand and model of batteries there are. Then list the parameters from the monitor system for absorption voltage, and tail (ending, return) amps and I can agree or disagree with what they are in relation to telling you whether or not you batteries are truly full when the charged light comes on. It is highly unlikely those settings will the right for your setup if they weren't changed from the defaults.
 
I have two Full River AGM batteries 6 volt, 224 amps in series. Yes, the Victron BMV 712 needed to be adjusted.
 

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Thank you, exactly what I need to see what is going on. Most of the settings are fine, with one a bit on the high side and one not close to what it would need to be to get full. The second of the two is probably to fool the monitor to reset to 100% at the point that the charger is capable of getting to that is probably in the 85-90% range of true state of charge.

AGM batteries would normally be set at .5-1% tail current so 2% isn't horrible but not best for good condition batteries. For older batteries it would fine.

The issue is with the 13.2v charged voltage ( which is what, IIRC, what Victron monitor comes with it as default) is way low to get the battery full. It would need to be in the 14.3-14.6 for most all AGM batteries. Without getting the low tail current at required higher voltage, you will leave the batteries at less than full charge, but probably as good as the Tripplite would be able to do. You would not notice the issue unless you tried to use near the 80% depth of discharge area during use, as you would be near dead by then. It will shorten battery life and reduce usable capacity.

My guess is that is if you change the 13.2v to the correct 14.3v, you will never see the charge light come on for the monitor. The one on the Tripplite probably will.
 
Thank you, I can try adjusting the tail current. Someone knowledgeable about batteries and this kind of hardware gave me these specifications. Victron is not easy to setup and the owners manual leaves a lot to be desired. Their customer service is not very good.

My system is actually not working presently because I have a loose wire. I was getting a regular reading and then it dropped to.05 volts on the display and bounced around for a little bit. 0.5 volts is just noise. I changed the fuse which normally works, but, it didn't. I have a relatively new shunt; the first one failed around 4 1/2 years.
My two Full River AGM batteries lasted 4 1/2 years, which is pretty good, I think. It's just they are expensive. It was $725 for two. I like them because they don't require water, just set up and forget about them.

Also, the batteries usually go down to 70 percent if I'm using them a lot or just to 85 percent with light use. I have a CPAP machine and it's never been a problem using these batteries.

I've found that running the generator for 90 minutes will bring my batteries back up to 85 percent and the two 275 watt solar panels will charge them up to 100 percent pretty fast.

The way I use my rig is it's gets driven mostly every day when we're out camping and the battery separator will charge up the system just driving.

Finally, some time during the day the solar panels will read 14.4 which I know sounds high, but, it settles back to 13.7 or 13.8.

Overall, I have no complaints with Full River, the battery separator, or the solar panels. The inverter charger is the original one, the coach was built in July 2011.

What happened to the original inverter charger on your rig. Oh, by the way, you're the person who inspired me to get the Victron BMV 712, so, thank you for that.
 
4.5 years on a set of Full River AGMs is way short of what they can be. At least one user on the forum has gotten double that amount. I pulled out our Lifeline AGMs after 8 years and they tested almost at new levels.

14.4v on solar panels while charging is good, not bad or too high, as it is needed to get you to full on the batteries. With solar, because of the low charging amps, hold time at the 14.4v is possibly an issue.

Bottom line, IMO, is that 4.5 years life on premium AGM batteries indicates a charging issue, or over discharging.

Of course, it is up to you to decide if upgrading the charging at considerable expense (much more than a pair of batteries is worth the cost/benefit. Most users choose to accept the lower battery life to the high cost of upgrading.
 
I think 4 1/2 years is a pretty good average, in my opinion. My previous set were Centurion batteries, that's "Battery Systems house brand" which I do not recommend. Those only lasted 30 months. I was not impressed.

Yes, I've heard people say they got 8 years of service? I have a hard time believing that. Maybe they used a battery tender or always plugged in. There are so many cycles for batteries and they fail.

The biggest joke about the new cellphones is that they will give you 7 years of updates, I don't think the batteries in the cellphones can last 7 years either.
 
.......................... I have a relatively new shunt; the first one failed around 4 1/2 years.
My two Full River AGM batteries lasted 4 1/2 years, which is pretty good, I think. .................

My Fullriver batteries 2 x 12V/115Ahr lasted 11years. How did your first shunt fail, it is unusual for them to fail, maybe mechanical or corrosive damage.
 

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