Dry Camping with EU2000i & Trojans

It works for you and there is no disputing that but it's hard to recommenced something to others when you have no actual data of your own and the specifications are not even close to working as you described.

Okay, being exact, although I said "approximately" . What I found is exact and good to know for those that want to be exact in everything that they do! If "exactly" drained to 50% it will take 5 hours at 10 amps to be "exactly" 100% full.

I think 3~4 is close to 5 but hey.

IMHO not knowing what's actually going on is complicated and leads to additional costs down the road. Proper battery care is essential for long batter life and really is simpler than not knowing what is going on. That is from years of experience paying attention to batteries vs being around those who don't. I don't even recall the list time we where not camping miles and miles from a current bush, sometimes for 8-10 days. I too have never been without power but was amazed at how bad the OE trailer gauges lie. They don't lie to the point of losing power but they do lie to the point of killing batteries faster than is needed. Car chargers are also known to charge a little hot which means the top charge lasts longer (false indications), but also at the cost of battery life.

To each their own, but it's really hard to tell someone how something works when your not really aware of what is going on.

Like I said, you are trying to tell me you get 15 mpg, but your odometer and gas gauge are broken and you use a pump that doesn't measure fuel dispensed.

It works for you and there is no disputing that but it's hard to recommenced something to others when you have no actual data of your own and the specifications are not even close to working as you described.

You have mentioned using an auto charger in conjunction with and stand alone to the converter. If you are using it in conjunction with it will shutoff prior to 100% charge every time because the voltage sensed is a false indication of battery SOC due to the converter providing voltage.

Contrary to what you may think using multiple chargers is not simpler than a single good charger. Even a crappy converter with a decent simple auto charger is more complicated than a single good converter.

. You also haven't answered the question as to how you know the battery is at 100% SOC.

The battery charger shuts off when fully charged. This isn't rocket science and you don't need all the instruments and gadgets to survive off grid. People have been doing it for years without making it into more work than pleasure.

Yes, I rely on the modern battery charger and the battery Guage in the trailer and have never been left without power, ever! Neither have any of the loggers I lived and worked with off grid for months at a time without hookups, just I in the boonies.

The new breed of RVers/campers are over thinking and making things that are so simple, so complicated.

dmullen wrote:
I stayed at a Holiday Inn Express last night!

And I was the first dish washer at the first Holiday Inn constructed in Boise. :B:B

Dang I'm old.

Back to topic.. The opp has everything he needs right now for eight day stays without hookups. I do it for longer periods with the same but 12 volt batteries instead.

I spent a great deal of time to get my WFCO to perform according to the specifications including 4x GC2 batteries and 30' of #2 wire. It did eventually work with great effort. The trick is to get voltage at the WFCO to remain below 13.2 volts during the first couple minutes of charging. Not an easy task and still it was tempermental. In hindsight I wish I had just replaced the WFCO. Usually people go #4 wire because that is the largest that fits in the converter terminals. The wire does help. However the converter voltage is far more important.

Think what you want, but your experiance is not a fact it's an opinion.

The fact is that a 10AH charger cannot recharge a 110AH battery at 50%SOC in 3 hours. That's the fact, nothing to prove or disprove.

It does pertain to the OP, as you are portraying something that is not accurate. You also haven't answered the question as to how you know the battery is at 100% SOC.

110AH batter at 50% SOC needs to have 55AH replenished, something you cannot do in 3 hours with a 10A charger.. very simple. Real world is even slower than math and experience with actual numbers, not guesses, will teach that.

Stop guessing your SOC and take some measurements. You will probably be surprised at what you thought is much different than fact.

You are trying to tell me you get 15 mpg, but your odometer and gas gauge are broken and you use a pump that doesn't measure fuel dispensed.

dmullen wrote:
I stayed at a Holiday Inn Express last night!

Sorry for a derail.

Take the information you find to be most factual and go forth and enjoy camping!!

I stayed at a Holiday Inn Express last night!

You live in Idaho but your comments make my think you're really a California transplant.

That's funny. Born and raised in Idaho here.Hillcrest elementry/South junior high and Borah high .My Dad was the one that put that F 102 on the stand by the airport. :B

My facts are my facts, the actual percentage left after 3~4 nights of cpap use is a guess, yes based on others experiences but I don't really care one way or the other as it's just a base for my usage of the cpap on a 110 amp amp hour battery.

This has nothing to do with the original question yet you jumped in to try and prove someone wrong, not answer the question the opp asked. Sounds like you have more knowledge than boots on the ground actual experience. Typical military and I'm a military brat and served.

dmullen wrote:
I have read several threads on replacing the WFCO 8955 with the PD 4655 and in several cases they have also increased the size of the battery to converter cables to at least 4ga. Have any of you guys who replaced your converter done this and did it make a difference in the performance of the 4655?

I run larger wires but I also moved my batteries and upgraded the batteries at the same time so no comparison.

I will note that now my limit is the initial 10" pigtail that comes with the PD4655. As you can see in the graph there is a decent voltage drop from the circuit board to the distribution panel, but nothing can be done about that.

My batteries are within 24" of 6 Ga wire from the converter.

jaycocreek wrote:
Well, the discharge was a guess based on others using the same cpap on the same battery. They said it lasted 6~7 days until fully discharged. My 3~4 is 50% of that. Leave it to an Einstein to question mathematically the actual experience without having done so.

But you just admitted to not having done so. Your basing your 50% SOC on other experience and not actual data. How can you tell me I am wrong yet you actually have no idea what your SOC is???

Get some real data and share that, not your experience thru hearsay.

You can't base a fact on that information.

You live in Idaho but your comments make my think you're really a California transplant.

Well, the discharge was a guess based on others using the same cpap on the same battery. They said it lasted 6~7 days until fully discharged. My 3~4 is 50% of that. Leave it to an Einstein to question mathematically the actual experience without having done so.