Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: Dub on September 05, 2018, 11:42:37 am

Title: Freedom/20 Inverter Charger
Post by: Dub on September 05, 2018, 11:42:37 am
I have no manual and can't find one online for this era of charger.. Does a Freedom/20 that likely came factory installed in my 1996 270 have Bulk, absorption, float charge capabilities?
Title: Re: Freedom/20 Inverter Charger
Post by: wolfe10 on September 05, 2018, 11:50:43 am
YES.  But still has to be programmed (for battery type, size of battery bank and ambient temperature-- unless remote temperature sensor)


Earliest ones had dip switches on the inverter/charger itself.

Mid range on the back of the remote display (had to remove from the wall to access).

Newer ones programmable from the front of the remote panel.
Title: Re: Freedom/20 Inverter Charger
Post by: Dub on September 05, 2018, 12:01:55 pm
Thanks Brett.
Title: Re: Freedom/20 Inverter Charger
Post by: Caflashbob on September 05, 2018, 01:32:56 pm
Key part of a long term more reliable battery system is a battery temperature monitoring system.

My oem 97's heart freedom did not have that feature in it so I would think your 96 2000 watt does not either.

Hot weather requires lower voltages.  Cold weather higher.  Old machine cannot automatically adjust like the later ones.

Newer inverter with a BTMS will give a much longer battery life.  I also turned down my alternator to output 13.6 volts at the batteries to lower the amount of incorrect charging from it. 

Harder to temp control engine batteries charging as they are in the hot engine compartment area.  Not fixable.

Probably why Foretravel used optima red tops as their spiral wound design can maybe handle the heat and overcharging better than normal flat sided batteries in that area in that use.
Title: Re: Freedom/20 Inverter Charger
Post by: Dub on September 05, 2018, 01:45:41 pm
Longer battery life is certainly an issue with the prices of 8D AGM's and keeping a battery properly charged is key to it's lasting. I will likely be looking closer at a newer model Inverter/Charger.
Title: Re: Freedom/20 Inverter Charger
Post by: wolfe10 on September 05, 2018, 02:15:22 pm
Be aware that you CAN program in ambient temperature-- I would sure not buy a newer inverter/charger just for automatic temperature control.

And, I do not know if your model can be fit with the external battery temperature sensor.  Look at the inverter/charger unit itself-- it may have a "telephone jack style" receptacle for the remote temperature sensor which could be added if you don't want to  reprogram as temperatures change dramatically (summer/winter).
Title: Re: Freedom/20 Inverter Charger
Post by: Mike Leary (RIP) on September 05, 2018, 02:18:37 pm
Probably why Foretravel used optima red tops as their spiral wound design can maybe handle the heat and overcharging better than normal flat sided batteries in that area in that use.
I'm a big fan of Optimas, our M-34/78  Red Top AGMs are going on eight years. A lot of the success. is, Brett installed the Xantrex 'True-Charge 40+' with three stage charger with a dual battery bank output and remote wall-mount indicator. We use the Lifeline GPL- 8DL AGMs for the house. I don't know if it was OEM or Brett, but the front curbside battery has a 200 amp fuse.
Title: Re: Freedom/20 Inverter Charger
Post by: wolfe10 on September 05, 2018, 02:43:26 pm
We use the Lifeline GPL- 8DL AGMs for the house. I don't know if it was OEM or Brett, but the front curbside battery has a 200 amp fuse.

NOT OEM.  But with two largest 12 VDC loads on the house batteries being the generator and the jacks (both up front), this made sense.

Also good from a weight distribution stand point.
Title: Re: Freedom/20 Inverter Charger
Post by: Barry & Cindy on September 05, 2018, 05:58:48 pm
Pictures eliminate guessing.  Freedom 20 came with several remote panels.

Attached may be your missing manuals:

Title: Re: Freedom/20 Inverter Charger
Post by: Caflashbob on September 05, 2018, 08:09:43 pm
Freedom inverters before serial 100,000 in the case of out Feb 97 built 97 is below the serial number to have the BTMS input.

In hot weather use the long overcharging can bulge the cases permanently from the internal gas build up.

So as Brett  posted you could alter the charging voltage to reflect the batteries actual temperature in a real time basis.

Undercharging in cold weather. Overcharging over 75 degrees lowers the battery life and the available amp hours.

If you go from power pedestal to pedestal the battery capacity retention is not as important versus you run on batteries a lot.

Coach came with gel batteries that can take over and undercharging better than the other types as they do not need  and can not be equalized. 

Undercharging AGM's cause lost capacity and only lifeline's can be equalized. 

So in cold weather a AGM battery charged without a BTMS may slowly lose capacity as the charging voltage should have been increased.

BTMS have been available for 20 years now.

Most issues I had long ago with owners satisfaction with their coaches were battery related.

The coach IS the 12 volt system.  Like I said unless you hardly use the 12 volt side?

We enjoy rving and dry camping
Title: Re: Freedom/20 Inverter Charger
Post by: joeszeidel on September 06, 2018, 11:38:55 am
Dub, I took a chance and had my inverter rebuilt. Cost was $300.00. Its been working fine ever since. I check voltage alot more often. I had to buy new batteries because they were fried. Look for a shop in you area, and check to see if they are capable. Not everyone that sells them can fix them.
Title: Re: Freedom/20 Inverter Charger
Post by: wolfe10 on September 06, 2018, 11:44:33 am
Dub,

Do you have any reason to suspect that your inverter/charger is not working as it should?

Let us know when you locate the dip switches and are able to program it (see my post above).
Title: Re: Freedom/20 Inverter Charger
Post by: Caflashbob on September 06, 2018, 01:32:27 pm
The non full wave output and the lack of a BTMS had me finally replace my still working heart freedom 25 a few years ago.

My local inverter rebuilder showed me in other inverters that the contactors inside all the units have their surfaces pit from use and the current transfer abilities are lessened.  Not as much output current. 

Plus the internal connections in the heart loosen in long use and need retightening and the dust inside needs cleaning out.

He then seals the boards themselves that were not sealed when new.

New magnum sw2812 and the old outback inverters have coated boards to my knowledge.

So not full wave power, no BTMS, lower output and future reliability issues finally convinced me to replace the 20 year old unit.

Especially as I had just replaced the three house gels with new mk 8g8d's and the projected life of the expensive batteries would be greatly extended for sure with the  BTMS available in the newer products.

My original magnum control panel Me-Rc is configured to allow the batteries to drop to 80% before starting the recharge cycle whick I think was the same in the link 2000 panel.

I have sourced a Me-Arc magnum panel which allows the user to program the amount of voltage drop the panel sees before starting the charge cycle from the non adjustable 80% to up to 99%. 

Have not installed it yet as my solar and combiner keep the batteries at full charge in dry storage.

Plugged in the newer inverters have additional cycles to ensure even longer battery life and reduce unnecessary cycling

Stops needless cycling of the battery.  100% to 80% then back for years if plugged in wears the batteries

Sorry about the extended post about these issues and differences but especially if renewing the batteries themselves the much extended life of the system can help defray the cost of the system upgrades.

Knowing what I know now I would have upgraded my coach much earlier. 

Microwave works much better and is quieter in full wave power.

Title: Re: Freedom/20 Inverter Charger
Post by: Dub on September 06, 2018, 01:48:01 pm
I don't have any issues that I'm aware of with the charger. My 8D AGMS are 2 months old and I have had no battery issues.. I looked on the unit's face  for a jack and there is nothing.. There is a phone jack type plug that I have showed a picture of on the remote display that I have been curious of since I bought the coach. It doesn't look OEM..I haven't had an opportunity to take the remote display down to look for dip switches but may today. While looking at the remote panel maybe some one can tell me what the intermatic timer switch is on the top right.. My objective is to take as good of care of the new batteries as I can, hopefully with the inverter charger I have.. Barry, I will look thru those manuals and see if one is for my unit..I would pay good money for the manuals for this coach and for the life of me I will never know why anyone would remove them from a coach but they do.

Title: Re: Freedom/20 Inverter Charger
Post by: wolfe10 on September 06, 2018, 01:59:40 pm
Dub,

I am guessing, but the "setup" on the front of the inverter remote panel suggests that programming is from the FRONT of the remote panel. Suggesting that it is not the age of the coach.

Plenty of on-line manuals for the remote panel.

http://www.xantrex.com/power-products/default/freedom-458-basic-remote.aspx
Title: Re: Freedom/20 Inverter Charger
Post by: red tractor on September 06, 2018, 08:06:34 pm
The remote is the 458 remote which was a direct and improved replacement for the original remote panel There are no dip switches on the back to program. You do all the programming from the front of the panel. You should be able to download the manual for the 458 remote maybe from the Heart website. I will check if I still have a manual for the remote as I have several of the panels.
Title: Re: Freedom/20 Inverter Charger
Post by: Dub on September 08, 2018, 02:32:34 pm
You are right on no dip switches on the back of the remote. I looked before reading your post. Good to know the model number of the one I have. Next I will take the panel off the unit. Thanks Ron
Title: Re: Freedom/20 Inverter Charger
Post by: red tractor on September 08, 2018, 08:05:44 pm
You need the manual to program what type of batteries you have. It has been to many years since I did it and I can't remember which buttons to push to change types of batteries and charging temps. Maybe on u tube someone can help.